SlideShare a Scribd company logo
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 09 Issue: 07 | July 2022 www.irjet.net p-ISSN: 2395-0072
© 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 236
STRUCTURAL ANALYSIS OF A ROTOMOLDED WATER TANK
Omkar Edlabadkar
PVG’S COET and GKPIOM
Mechanical Engineering
Pune
Shubhankar Potdar
PVG’S COET and GKPIOM)
Mechanical Engineering
Pune
Himanshu Kumar Jha
PVG’S COET and GKPIOM
Mechanical Engineering
Pune
Prof.Dr. N.G. Jaiswal
PVG’S COET and GKPIOM
Project Guide
Pune
------------------------------------------------------------------------------***--------------------------------------------------------------------------------
Abstract—Water tank is a structure used to store water
for domestic and industrial purposes. These water tanks are
mainly produced using rotational molding process. The
material, thickness of the tanks and the number of layers vary
according to the purpose of the tank. In this project, analysis
of a water tank has been done for various materials and by
simulating the various forces acting on it, optimum material
combination isselected.
I. INTRODUCTION
The majority of the water tanks are manufactured using
the rotational molding process. The materials considered in
this project are in accordance with their suitability for
rotational molding. In this project, a 5000L and 2-layered
water tank is considered. The materials considered for this
project are linear low density polyethylene (LLDPE), low
density polyethylene (LDPE) and high density polyethylene
(HDPE).
II. LITERATURE REVIEW
A. Rotational Molding Process
Rotational molding incorporates a multi-step process
using pulverized polymer materials, typically as a powder,
which is loaded into a mold, which in turn is sent into an
oven. It is then rotated slowly in effort to achieve a
uniform wall thickness. The rotational molding process is
used to produce hollow, seamless, one-piece plastic
products for a never ending list of industry and applications.
This manufacturing process does not induce any pressure
into the manufacturing process unlike other plastics
molding processes and hence the products formed are more
durable.
B. Polyethylene
Polyethylene is a polyolefin made from the
polymerization of ethylene (or ethene) monomer. It is a
thermoplastic polymer having excellent impact strength and
offer near-zero moisture absorption. It is classified on the
basis of its density into low, medium and high density
polyethylene. For this study, only low and high density
polyethylene is considered.
C. Low Density Polyethylene
Low Density Polyethylene or LDPE is a soft, tough and
light-weight polymer belonging to the Polyethylene branch of
thermoplastics. It has a branched out structure because of
which it has low density and low volume. It is often used
where strength and stiffness of the structure are an
important requirement. Following are its properties:
Properties Value
Density (kg/m3
) 920
Young’s Modulus (Mpa) 300
Poisson’s Ratio 0.44
TABLE I
PROPERTIES OF LDPE
D. Linear Low Density Polyethylene
Linear Low Density Polyethylene or LLDPE is a linear
polymer with significant short branches. LLDPE structurally
differs from LDPE, because LLDPE has shorter branches. It is
used where there is a need of high impact strength and high
flexibility. Following are its properties:
Properties Value
Density (kg/m3
) 930
Young’s Modulus (Mpa) 360
Poisson’s Ratio 0.40
TABLE II
PROPERTIES OF LLDPE
E. High Density Polyethylene
High Density Polyethylene or HDPE has a high strength-
density ratio. It has little branching, giving it stronger tensile
strength than LDPE. It is harder and opaque and can
withstand higher temperatures. It is characterized by high
ductility, high corrosion resistance and it is non-toxic.
Following are its properties:
Properties Value
Density (kg/m3
) 950
Young’s Modulus (Mpa) 1860
Poisson’s Ratio 0.46
TABLE III
PROPERTIES OF HDPE
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 09 Issue: 07 | July 2022 www.irjet.net p-ISSN: 2395-0072
© 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 237
III. METHODOLOGY
Various materials were studied and on the basis of
their properties, suitability for rotational molding and
their availability, three polyethylene types were selected.
A three- dimensional model of the two-layered water tank
was created using a modeling software. The dimensions
and other param- eters of the tank were obtained from the
actual model. The model was then uploaded to a software
where further analysis was done. The materials
LLDPE,LDPE and HDPE were added to the database of the
software and assigned to the tank model in several
combinations. The forces considered were gravitational
force and hydro static pressure, for which the water level
was considered up to the lid of the tank. Meshing was
carried out by using the appropriate mesh properties. The
final results were calculated and results were obtained.
Fig. 1. Isometric Sectional view of the water tank model
IV. RESULTS
Different material combinations were assigned to the
water- tank layers and values like stress, strain and
deformation were obtained.
Fig.2 shows the normal stress induced in a LLDPE-LDPE
tank. A LLDPE-LDPE tank means LLDPE was assigned to
outer layer and LDPE was assigned to the inner layer. Sim-
ulations and analysis were done for each combination of the
materials and their results are summarized in table 4.
Fig. 2. Meshed model
Fig. 3. Normal stress generated in a LLDPE-LDPE tank
Tanks Total
Deformation(mm)
Normal
Stress(MPa)
Strain
Energy(mJ)
LLDPE-LLDPE 7.9 2.46 64.74
LLDPE-LDPE 8.26 2.82 64.05
LLDPE-HDPE 3.83 10.32 41.18
LDPE-LLDPE 9.05 2.78 74.15
LDPE-LDPE 9.46 3.19 74.51
LDPE-HDPE 4.1 10.99 47.18
HDPE-LLDPE 2.18 1.95 11.78
HDPE-LDPE 2.23 1.89 12.18
HDPE-HDPE 1.52 TABLE 3.56
IV 11.74
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 09 Issue: 07 | July 2022 www.irjet.net p-ISSN: 2395-0072
© 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 238
V. CONCLUSION
• From the Table IV, it is seen that the normal stress
for LDPE-HDPE water tank is the least among the
combinations.
• It can also be seen that the LLDPE-HDPE tank can bear a
normal stress marginally lesser than that of the LDPE-
HDPE tank.
• Hence, it can be concluded that the tank with outer layer
made up of LDPE and the inner layer made up of HDPE
tank is the most optimum structure.
[1] Material Selection for Rotational Moulding Process Using Grey Rela- tional
Analysis Approach Bhavesh Chaudharya, PL. Ramkumarb, Kumar Abhishek
(2018)
[2] Roy J. Crawford and James L. Throne (Auth.) - Rotational Molding
Technology (2001, William Andrew)
[3] Static Structural Analysis of Water Tank , Pavol Lengvarsky*, Miroslav Pástor,
Jozef Bocko, American Journal of Mechanical Engineering, 2015,
Vol. 3, No. 6, 230-234
[4] Static and Dynamic Analysis of Water Tank by FEM: A Review , 2019 JETIR
March 2019, Volume 6, Issue 3
[5] Optimization In TheDesign Of Fiber Reinforced Plastic Storage Tank, Akash
Tiwari, Dr. Suwarna Torgal , INTERNATIONAL JOURNAL OF SCIENTIFIC
TECHNOLOGY RESEARCH VOLUME 8, ISSUE 08,
AUGUST 2019
[6] Modelling of FRP Cylinder for Stress Analysis V. Rishab Kanth, V. Balakrishna
Murthy and A. V.Ratna Prasad, (IJERT) Vol.1 Issue 8,
October – 2012
[7] Effect of oven residence time on mechanical properties in rotomoulding of
LLDPE P L RAMKUMAR*, SACHIN D WAIGAONKAR and D M
KULKARNI, Sa¯dhana¯ Vol. 41, No. 5, May 2016, pp. 571–582
[9] G. Beall, Rotational Molding: Design, Materials, Tooling, and Processing,
Hanser/Gardner Publications, Cincinnati, OH, 1998.
VI. REFERENCES
[10] Adapted from M. Ezrin, Plastics Failure Guide: Cause and Prevention,
Hanser/Gardner Publications, Cincinnati, OH, 1996, Table 1-1, p. 7.
[11] Adapted from J.L. Throne, Technology of Thermoforming, Carl Hanser
Verlag, Munich, 1996, p. 473.
[12] C. Spyrakos, Finite Element Modeling in Engineering Practice, Includes
Example with ALGOR, West Virginia University Press, Morgantown, WV,
1994.
[13] G. Beall, Rotational Molding: Design, Materials, Tooling, and Process- ing,
Hanser/Gardner Publications, Cincinnati, OH, 1998, pp. 94-97.
[14] R.A. Malloy, Plastic Part Design for Injection Molding: An Introduc-
tion, Carl Hanser Verlag, Munich, 1994, Chapter 4, ”Structural Design
Considerations.”
[15] R.J. Roark and W.C. Young, Formulas for Stress and Strain, 5th ed.,
McGraw-Hill Book Co., New York, 1975, Table 35
[8] Rotational Molding Cycle Time Reduction Using a Combination of Physical
Techniques , M.Z. Abdullah,1 S. Bickerton,1 D. Bhattacharyya,1 R.J.
Crawford,2 E. Harkin-Jones3

More Related Content

Similar to STRUCTURAL ANALYSIS OF A ROTOMOLDED WATER TANK

IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...
IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...
IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...
IRJET Journal
 
EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...
EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...
EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...
IRJET Journal
 
IRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFD
IRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFDIRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFD
IRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFD
IRJET Journal
 
Investigating the Mechanical Properties of Polyester-Natural Fiber Composite
Investigating the Mechanical Properties of Polyester-Natural Fiber CompositeInvestigating the Mechanical Properties of Polyester-Natural Fiber Composite
Investigating the Mechanical Properties of Polyester-Natural Fiber Composite
IRJET Journal
 
“To investigate the use and properties of bituminous felt or membrane sheet i...
“To investigate the use and properties of bituminous felt or membrane sheet i...“To investigate the use and properties of bituminous felt or membrane sheet i...
“To investigate the use and properties of bituminous felt or membrane sheet i...
IRJET Journal
 
IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...
IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...
IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...
IRJET Journal
 
IRJET- Manufacturing Processes and Applications of Composites Materials
IRJET- Manufacturing Processes and Applications of Composites MaterialsIRJET- Manufacturing Processes and Applications of Composites Materials
IRJET- Manufacturing Processes and Applications of Composites Materials
IRJET Journal
 
Enhancement of mechanical properties of polypropylene extracted from the wast...
Enhancement of mechanical properties of polypropylene extracted from the wast...Enhancement of mechanical properties of polypropylene extracted from the wast...
Enhancement of mechanical properties of polypropylene extracted from the wast...
IRJET Journal
 
IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...
IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...
IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...
IRJET Journal
 
IRJET- Effect on Tensile Strength of Nylon-6 by Adding Filler
IRJET- Effect on Tensile Strength of Nylon-6 by Adding FillerIRJET- Effect on Tensile Strength of Nylon-6 by Adding Filler
IRJET- Effect on Tensile Strength of Nylon-6 by Adding Filler
IRJET Journal
 
IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...
IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...
IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...
IRJET Journal
 
IRJET- An Innovative Technique as per SPI Code to Breakdown the Plastic
IRJET-  	  An Innovative Technique as per SPI Code to Breakdown the PlasticIRJET-  	  An Innovative Technique as per SPI Code to Breakdown the Plastic
IRJET- An Innovative Technique as per SPI Code to Breakdown the Plastic
IRJET Journal
 
IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...
IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...
IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...
IRJET Journal
 
IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...
IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...
IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...
IRJET Journal
 
PLASTICS WASTE AS OPTIONAL FUEL
PLASTICS WASTE AS OPTIONAL FUELPLASTICS WASTE AS OPTIONAL FUEL
PLASTICS WASTE AS OPTIONAL FUEL
IRJET Journal
 
IRJET- Conversion of Plastic Waste to Energy: Pyrolysis
IRJET- Conversion of Plastic Waste to Energy: PyrolysisIRJET- Conversion of Plastic Waste to Energy: Pyrolysis
IRJET- Conversion of Plastic Waste to Energy: Pyrolysis
IRJET Journal
 
IRJET-A Review Paper on Self Curing Concrete
IRJET-A Review Paper on Self Curing ConcreteIRJET-A Review Paper on Self Curing Concrete
IRJET-A Review Paper on Self Curing Concrete
IRJET Journal
 
IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...
IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...
IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...
IRJET Journal
 
Plastic paver blocks
Plastic paver blocksPlastic paver blocks
Plastic paver blocks
IRJET Journal
 
Mechanical and Chemical Characterisation of Wood Powder Polymer Composites
Mechanical and Chemical Characterisation of Wood Powder Polymer CompositesMechanical and Chemical Characterisation of Wood Powder Polymer Composites
Mechanical and Chemical Characterisation of Wood Powder Polymer Composites
IRJET Journal
 

Similar to STRUCTURAL ANALYSIS OF A ROTOMOLDED WATER TANK (20)

IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...
IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...
IRJET- Rejection Analysis of Honey Comb Sandwich Panel for Advance Light Weig...
 
EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...
EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...
EXPERIMENTAL STUDY ON SELFCOMPACTING RC BEAMS REINFORCED WITH POLY-VINYL MESH...
 
IRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFD
IRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFDIRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFD
IRJET- Design and Analysis of Epoxy Coated Flow through Pipe by CFD
 
Investigating the Mechanical Properties of Polyester-Natural Fiber Composite
Investigating the Mechanical Properties of Polyester-Natural Fiber CompositeInvestigating the Mechanical Properties of Polyester-Natural Fiber Composite
Investigating the Mechanical Properties of Polyester-Natural Fiber Composite
 
“To investigate the use and properties of bituminous felt or membrane sheet i...
“To investigate the use and properties of bituminous felt or membrane sheet i...“To investigate the use and properties of bituminous felt or membrane sheet i...
“To investigate the use and properties of bituminous felt or membrane sheet i...
 
IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...
IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...
IRJET-Numerical Analysis of Extruder Screw & Controlling the Diameter of Plas...
 
IRJET- Manufacturing Processes and Applications of Composites Materials
IRJET- Manufacturing Processes and Applications of Composites MaterialsIRJET- Manufacturing Processes and Applications of Composites Materials
IRJET- Manufacturing Processes and Applications of Composites Materials
 
Enhancement of mechanical properties of polypropylene extracted from the wast...
Enhancement of mechanical properties of polypropylene extracted from the wast...Enhancement of mechanical properties of polypropylene extracted from the wast...
Enhancement of mechanical properties of polypropylene extracted from the wast...
 
IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...
IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...
IRJET- Experimental Investigation on Hdpe & Pet in Construction of Bitumenous...
 
IRJET- Effect on Tensile Strength of Nylon-6 by Adding Filler
IRJET- Effect on Tensile Strength of Nylon-6 by Adding FillerIRJET- Effect on Tensile Strength of Nylon-6 by Adding Filler
IRJET- Effect on Tensile Strength of Nylon-6 by Adding Filler
 
IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...
IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...
IRJET- Research and Development of Advanced Fibers Composite Materials and Pr...
 
IRJET- An Innovative Technique as per SPI Code to Breakdown the Plastic
IRJET-  	  An Innovative Technique as per SPI Code to Breakdown the PlasticIRJET-  	  An Innovative Technique as per SPI Code to Breakdown the Plastic
IRJET- An Innovative Technique as per SPI Code to Breakdown the Plastic
 
IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...
IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...
IRJET- Optimizing Cooling Efficiency through Conformal Cooling using Moldex3D...
 
IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...
IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...
IRJET- Performance of Concrete using Waste Glass as a Partial Replacement of ...
 
PLASTICS WASTE AS OPTIONAL FUEL
PLASTICS WASTE AS OPTIONAL FUELPLASTICS WASTE AS OPTIONAL FUEL
PLASTICS WASTE AS OPTIONAL FUEL
 
IRJET- Conversion of Plastic Waste to Energy: Pyrolysis
IRJET- Conversion of Plastic Waste to Energy: PyrolysisIRJET- Conversion of Plastic Waste to Energy: Pyrolysis
IRJET- Conversion of Plastic Waste to Energy: Pyrolysis
 
IRJET-A Review Paper on Self Curing Concrete
IRJET-A Review Paper on Self Curing ConcreteIRJET-A Review Paper on Self Curing Concrete
IRJET-A Review Paper on Self Curing Concrete
 
IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...
IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...
IRJET- Synthesis and Study on Effect of Thickness on 3-Point Bending Strength...
 
Plastic paver blocks
Plastic paver blocksPlastic paver blocks
Plastic paver blocks
 
Mechanical and Chemical Characterisation of Wood Powder Polymer Composites
Mechanical and Chemical Characterisation of Wood Powder Polymer CompositesMechanical and Chemical Characterisation of Wood Powder Polymer Composites
Mechanical and Chemical Characterisation of Wood Powder Polymer Composites
 

More from IRJET Journal

TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
IRJET Journal
 
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURESTUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
IRJET Journal
 
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
IRJET Journal
 
Effect of Camber and Angles of Attack on Airfoil Characteristics
Effect of Camber and Angles of Attack on Airfoil CharacteristicsEffect of Camber and Angles of Attack on Airfoil Characteristics
Effect of Camber and Angles of Attack on Airfoil Characteristics
IRJET Journal
 
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
IRJET Journal
 
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
IRJET Journal
 
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
IRJET Journal
 
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
IRJET Journal
 
A REVIEW ON MACHINE LEARNING IN ADAS
A REVIEW ON MACHINE LEARNING IN ADASA REVIEW ON MACHINE LEARNING IN ADAS
A REVIEW ON MACHINE LEARNING IN ADAS
IRJET Journal
 
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
IRJET Journal
 
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
P.E.B. Framed Structure Design and Analysis Using STAAD ProP.E.B. Framed Structure Design and Analysis Using STAAD Pro
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
IRJET Journal
 
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
IRJET Journal
 
Survey Paper on Cloud-Based Secured Healthcare System
Survey Paper on Cloud-Based Secured Healthcare SystemSurvey Paper on Cloud-Based Secured Healthcare System
Survey Paper on Cloud-Based Secured Healthcare System
IRJET Journal
 
Review on studies and research on widening of existing concrete bridges
Review on studies and research on widening of existing concrete bridgesReview on studies and research on widening of existing concrete bridges
Review on studies and research on widening of existing concrete bridges
IRJET Journal
 
React based fullstack edtech web application
React based fullstack edtech web applicationReact based fullstack edtech web application
React based fullstack edtech web application
IRJET Journal
 
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
IRJET Journal
 
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
IRJET Journal
 
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
IRJET Journal
 
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignMultistoried and Multi Bay Steel Building Frame by using Seismic Design
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
IRJET Journal
 
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
IRJET Journal
 

More from IRJET Journal (20)

TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
 
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURESTUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
 
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
 
Effect of Camber and Angles of Attack on Airfoil Characteristics
Effect of Camber and Angles of Attack on Airfoil CharacteristicsEffect of Camber and Angles of Attack on Airfoil Characteristics
Effect of Camber and Angles of Attack on Airfoil Characteristics
 
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
 
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
 
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
 
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
 
A REVIEW ON MACHINE LEARNING IN ADAS
A REVIEW ON MACHINE LEARNING IN ADASA REVIEW ON MACHINE LEARNING IN ADAS
A REVIEW ON MACHINE LEARNING IN ADAS
 
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
 
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
P.E.B. Framed Structure Design and Analysis Using STAAD ProP.E.B. Framed Structure Design and Analysis Using STAAD Pro
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
 
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
 
Survey Paper on Cloud-Based Secured Healthcare System
Survey Paper on Cloud-Based Secured Healthcare SystemSurvey Paper on Cloud-Based Secured Healthcare System
Survey Paper on Cloud-Based Secured Healthcare System
 
Review on studies and research on widening of existing concrete bridges
Review on studies and research on widening of existing concrete bridgesReview on studies and research on widening of existing concrete bridges
Review on studies and research on widening of existing concrete bridges
 
React based fullstack edtech web application
React based fullstack edtech web applicationReact based fullstack edtech web application
React based fullstack edtech web application
 
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
 
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
 
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
 
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignMultistoried and Multi Bay Steel Building Frame by using Seismic Design
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
 
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
 

Recently uploaded

Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
shadow0702a
 
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...
bijceesjournal
 
Certificates - Mahmoud Mohamed Moursi Ahmed
Certificates - Mahmoud Mohamed Moursi AhmedCertificates - Mahmoud Mohamed Moursi Ahmed
Certificates - Mahmoud Mohamed Moursi Ahmed
Mahmoud Morsy
 
Embedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoringEmbedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoring
IJECEIAES
 
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
ISPM 15 Heat Treated Wood Stamps and why your shipping must have oneISPM 15 Heat Treated Wood Stamps and why your shipping must have one
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
Las Vegas Warehouse
 
Casting-Defect-inSlab continuous casting.pdf
Casting-Defect-inSlab continuous casting.pdfCasting-Defect-inSlab continuous casting.pdf
Casting-Defect-inSlab continuous casting.pdf
zubairahmad848137
 
Engine Lubrication performance System.pdf
Engine Lubrication performance System.pdfEngine Lubrication performance System.pdf
Engine Lubrication performance System.pdf
mamamaam477
 
22CYT12-Unit-V-E Waste and its Management.ppt
22CYT12-Unit-V-E Waste and its Management.ppt22CYT12-Unit-V-E Waste and its Management.ppt
22CYT12-Unit-V-E Waste and its Management.ppt
KrishnaveniKrishnara1
 
ACEP Magazine edition 4th launched on 05.06.2024
ACEP Magazine edition 4th launched on 05.06.2024ACEP Magazine edition 4th launched on 05.06.2024
ACEP Magazine edition 4th launched on 05.06.2024
Rahul
 
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsKuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
Victor Morales
 
官方认证美国密歇根州立大学毕业证学位证书原版一模一样
官方认证美国密歇根州立大学毕业证学位证书原版一模一样官方认证美国密歇根州立大学毕业证学位证书原版一模一样
官方认证美国密歇根州立大学毕业证学位证书原版一模一样
171ticu
 
Advanced control scheme of doubly fed induction generator for wind turbine us...
Advanced control scheme of doubly fed induction generator for wind turbine us...Advanced control scheme of doubly fed induction generator for wind turbine us...
Advanced control scheme of doubly fed induction generator for wind turbine us...
IJECEIAES
 
Properties Railway Sleepers and Test.pptx
Properties Railway Sleepers and Test.pptxProperties Railway Sleepers and Test.pptx
Properties Railway Sleepers and Test.pptx
MDSABBIROJJAMANPAYEL
 
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student MemberIEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
VICTOR MAESTRE RAMIREZ
 
Understanding Inductive Bias in Machine Learning
Understanding Inductive Bias in Machine LearningUnderstanding Inductive Bias in Machine Learning
Understanding Inductive Bias in Machine Learning
SUTEJAS
 
Transformers design and coooling methods
Transformers design and coooling methodsTransformers design and coooling methods
Transformers design and coooling methods
Roger Rozario
 
Literature Review Basics and Understanding Reference Management.pptx
Literature Review Basics and Understanding Reference Management.pptxLiterature Review Basics and Understanding Reference Management.pptx
Literature Review Basics and Understanding Reference Management.pptx
Dr Ramhari Poudyal
 
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
IJECEIAES
 
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Sinan KOZAK
 
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesHarnessing WebAssembly for Real-time Stateless Streaming Pipelines
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Christina Lin
 

Recently uploaded (20)

Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
 
Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...Comparative analysis between traditional aquaponics and reconstructed aquapon...
Comparative analysis between traditional aquaponics and reconstructed aquapon...
 
Certificates - Mahmoud Mohamed Moursi Ahmed
Certificates - Mahmoud Mohamed Moursi AhmedCertificates - Mahmoud Mohamed Moursi Ahmed
Certificates - Mahmoud Mohamed Moursi Ahmed
 
Embedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoringEmbedded machine learning-based road conditions and driving behavior monitoring
Embedded machine learning-based road conditions and driving behavior monitoring
 
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
ISPM 15 Heat Treated Wood Stamps and why your shipping must have oneISPM 15 Heat Treated Wood Stamps and why your shipping must have one
ISPM 15 Heat Treated Wood Stamps and why your shipping must have one
 
Casting-Defect-inSlab continuous casting.pdf
Casting-Defect-inSlab continuous casting.pdfCasting-Defect-inSlab continuous casting.pdf
Casting-Defect-inSlab continuous casting.pdf
 
Engine Lubrication performance System.pdf
Engine Lubrication performance System.pdfEngine Lubrication performance System.pdf
Engine Lubrication performance System.pdf
 
22CYT12-Unit-V-E Waste and its Management.ppt
22CYT12-Unit-V-E Waste and its Management.ppt22CYT12-Unit-V-E Waste and its Management.ppt
22CYT12-Unit-V-E Waste and its Management.ppt
 
ACEP Magazine edition 4th launched on 05.06.2024
ACEP Magazine edition 4th launched on 05.06.2024ACEP Magazine edition 4th launched on 05.06.2024
ACEP Magazine edition 4th launched on 05.06.2024
 
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsKuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions
 
官方认证美国密歇根州立大学毕业证学位证书原版一模一样
官方认证美国密歇根州立大学毕业证学位证书原版一模一样官方认证美国密歇根州立大学毕业证学位证书原版一模一样
官方认证美国密歇根州立大学毕业证学位证书原版一模一样
 
Advanced control scheme of doubly fed induction generator for wind turbine us...
Advanced control scheme of doubly fed induction generator for wind turbine us...Advanced control scheme of doubly fed induction generator for wind turbine us...
Advanced control scheme of doubly fed induction generator for wind turbine us...
 
Properties Railway Sleepers and Test.pptx
Properties Railway Sleepers and Test.pptxProperties Railway Sleepers and Test.pptx
Properties Railway Sleepers and Test.pptx
 
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student MemberIEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
 
Understanding Inductive Bias in Machine Learning
Understanding Inductive Bias in Machine LearningUnderstanding Inductive Bias in Machine Learning
Understanding Inductive Bias in Machine Learning
 
Transformers design and coooling methods
Transformers design and coooling methodsTransformers design and coooling methods
Transformers design and coooling methods
 
Literature Review Basics and Understanding Reference Management.pptx
Literature Review Basics and Understanding Reference Management.pptxLiterature Review Basics and Understanding Reference Management.pptx
Literature Review Basics and Understanding Reference Management.pptx
 
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
 
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024
 
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesHarnessing WebAssembly for Real-time Stateless Streaming Pipelines
Harnessing WebAssembly for Real-time Stateless Streaming Pipelines
 

STRUCTURAL ANALYSIS OF A ROTOMOLDED WATER TANK

  • 1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 09 Issue: 07 | July 2022 www.irjet.net p-ISSN: 2395-0072 © 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 236 STRUCTURAL ANALYSIS OF A ROTOMOLDED WATER TANK Omkar Edlabadkar PVG’S COET and GKPIOM Mechanical Engineering Pune Shubhankar Potdar PVG’S COET and GKPIOM) Mechanical Engineering Pune Himanshu Kumar Jha PVG’S COET and GKPIOM Mechanical Engineering Pune Prof.Dr. N.G. Jaiswal PVG’S COET and GKPIOM Project Guide Pune ------------------------------------------------------------------------------***-------------------------------------------------------------------------------- Abstract—Water tank is a structure used to store water for domestic and industrial purposes. These water tanks are mainly produced using rotational molding process. The material, thickness of the tanks and the number of layers vary according to the purpose of the tank. In this project, analysis of a water tank has been done for various materials and by simulating the various forces acting on it, optimum material combination isselected. I. INTRODUCTION The majority of the water tanks are manufactured using the rotational molding process. The materials considered in this project are in accordance with their suitability for rotational molding. In this project, a 5000L and 2-layered water tank is considered. The materials considered for this project are linear low density polyethylene (LLDPE), low density polyethylene (LDPE) and high density polyethylene (HDPE). II. LITERATURE REVIEW A. Rotational Molding Process Rotational molding incorporates a multi-step process using pulverized polymer materials, typically as a powder, which is loaded into a mold, which in turn is sent into an oven. It is then rotated slowly in effort to achieve a uniform wall thickness. The rotational molding process is used to produce hollow, seamless, one-piece plastic products for a never ending list of industry and applications. This manufacturing process does not induce any pressure into the manufacturing process unlike other plastics molding processes and hence the products formed are more durable. B. Polyethylene Polyethylene is a polyolefin made from the polymerization of ethylene (or ethene) monomer. It is a thermoplastic polymer having excellent impact strength and offer near-zero moisture absorption. It is classified on the basis of its density into low, medium and high density polyethylene. For this study, only low and high density polyethylene is considered. C. Low Density Polyethylene Low Density Polyethylene or LDPE is a soft, tough and light-weight polymer belonging to the Polyethylene branch of thermoplastics. It has a branched out structure because of which it has low density and low volume. It is often used where strength and stiffness of the structure are an important requirement. Following are its properties: Properties Value Density (kg/m3 ) 920 Young’s Modulus (Mpa) 300 Poisson’s Ratio 0.44 TABLE I PROPERTIES OF LDPE D. Linear Low Density Polyethylene Linear Low Density Polyethylene or LLDPE is a linear polymer with significant short branches. LLDPE structurally differs from LDPE, because LLDPE has shorter branches. It is used where there is a need of high impact strength and high flexibility. Following are its properties: Properties Value Density (kg/m3 ) 930 Young’s Modulus (Mpa) 360 Poisson’s Ratio 0.40 TABLE II PROPERTIES OF LLDPE E. High Density Polyethylene High Density Polyethylene or HDPE has a high strength- density ratio. It has little branching, giving it stronger tensile strength than LDPE. It is harder and opaque and can withstand higher temperatures. It is characterized by high ductility, high corrosion resistance and it is non-toxic. Following are its properties: Properties Value Density (kg/m3 ) 950 Young’s Modulus (Mpa) 1860 Poisson’s Ratio 0.46 TABLE III PROPERTIES OF HDPE
  • 2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 09 Issue: 07 | July 2022 www.irjet.net p-ISSN: 2395-0072 © 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 237 III. METHODOLOGY Various materials were studied and on the basis of their properties, suitability for rotational molding and their availability, three polyethylene types were selected. A three- dimensional model of the two-layered water tank was created using a modeling software. The dimensions and other param- eters of the tank were obtained from the actual model. The model was then uploaded to a software where further analysis was done. The materials LLDPE,LDPE and HDPE were added to the database of the software and assigned to the tank model in several combinations. The forces considered were gravitational force and hydro static pressure, for which the water level was considered up to the lid of the tank. Meshing was carried out by using the appropriate mesh properties. The final results were calculated and results were obtained. Fig. 1. Isometric Sectional view of the water tank model IV. RESULTS Different material combinations were assigned to the water- tank layers and values like stress, strain and deformation were obtained. Fig.2 shows the normal stress induced in a LLDPE-LDPE tank. A LLDPE-LDPE tank means LLDPE was assigned to outer layer and LDPE was assigned to the inner layer. Sim- ulations and analysis were done for each combination of the materials and their results are summarized in table 4. Fig. 2. Meshed model Fig. 3. Normal stress generated in a LLDPE-LDPE tank Tanks Total Deformation(mm) Normal Stress(MPa) Strain Energy(mJ) LLDPE-LLDPE 7.9 2.46 64.74 LLDPE-LDPE 8.26 2.82 64.05 LLDPE-HDPE 3.83 10.32 41.18 LDPE-LLDPE 9.05 2.78 74.15 LDPE-LDPE 9.46 3.19 74.51 LDPE-HDPE 4.1 10.99 47.18 HDPE-LLDPE 2.18 1.95 11.78 HDPE-LDPE 2.23 1.89 12.18 HDPE-HDPE 1.52 TABLE 3.56 IV 11.74
  • 3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 09 Issue: 07 | July 2022 www.irjet.net p-ISSN: 2395-0072 © 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 238 V. CONCLUSION • From the Table IV, it is seen that the normal stress for LDPE-HDPE water tank is the least among the combinations. • It can also be seen that the LLDPE-HDPE tank can bear a normal stress marginally lesser than that of the LDPE- HDPE tank. • Hence, it can be concluded that the tank with outer layer made up of LDPE and the inner layer made up of HDPE tank is the most optimum structure. [1] Material Selection for Rotational Moulding Process Using Grey Rela- tional Analysis Approach Bhavesh Chaudharya, PL. Ramkumarb, Kumar Abhishek (2018) [2] Roy J. Crawford and James L. Throne (Auth.) - Rotational Molding Technology (2001, William Andrew) [3] Static Structural Analysis of Water Tank , Pavol Lengvarsky*, Miroslav Pástor, Jozef Bocko, American Journal of Mechanical Engineering, 2015, Vol. 3, No. 6, 230-234 [4] Static and Dynamic Analysis of Water Tank by FEM: A Review , 2019 JETIR March 2019, Volume 6, Issue 3 [5] Optimization In TheDesign Of Fiber Reinforced Plastic Storage Tank, Akash Tiwari, Dr. Suwarna Torgal , INTERNATIONAL JOURNAL OF SCIENTIFIC TECHNOLOGY RESEARCH VOLUME 8, ISSUE 08, AUGUST 2019 [6] Modelling of FRP Cylinder for Stress Analysis V. Rishab Kanth, V. Balakrishna Murthy and A. V.Ratna Prasad, (IJERT) Vol.1 Issue 8, October – 2012 [7] Effect of oven residence time on mechanical properties in rotomoulding of LLDPE P L RAMKUMAR*, SACHIN D WAIGAONKAR and D M KULKARNI, Sa¯dhana¯ Vol. 41, No. 5, May 2016, pp. 571–582 [9] G. Beall, Rotational Molding: Design, Materials, Tooling, and Processing, Hanser/Gardner Publications, Cincinnati, OH, 1998. VI. REFERENCES [10] Adapted from M. Ezrin, Plastics Failure Guide: Cause and Prevention, Hanser/Gardner Publications, Cincinnati, OH, 1996, Table 1-1, p. 7. [11] Adapted from J.L. Throne, Technology of Thermoforming, Carl Hanser Verlag, Munich, 1996, p. 473. [12] C. Spyrakos, Finite Element Modeling in Engineering Practice, Includes Example with ALGOR, West Virginia University Press, Morgantown, WV, 1994. [13] G. Beall, Rotational Molding: Design, Materials, Tooling, and Process- ing, Hanser/Gardner Publications, Cincinnati, OH, 1998, pp. 94-97. [14] R.A. Malloy, Plastic Part Design for Injection Molding: An Introduc- tion, Carl Hanser Verlag, Munich, 1994, Chapter 4, ”Structural Design Considerations.” [15] R.J. Roark and W.C. Young, Formulas for Stress and Strain, 5th ed., McGraw-Hill Book Co., New York, 1975, Table 35 [8] Rotational Molding Cycle Time Reduction Using a Combination of Physical Techniques , M.Z. Abdullah,1 S. Bickerton,1 D. Bhattacharyya,1 R.J. Crawford,2 E. Harkin-Jones3