Abstract. Ensuring of permanent and continuous working process of oil-gas and field equipment alongside with the other factors, depends also on reliability of sealing units. A problem of deterioration modeling of a sealing element of a packer including into an oil field equipment complex is considered in this paper.
Abstract. Ensuring of permanent and continuous working process of oil-gas and field equipment alongside with the other factors, depends also on reliability of sealing units. A problem of deterioration modeling of a sealing element of a packer including into an oil field equipment complex is considered in this paper.
Rebound hammer test - Maintenance and Rehabilitation of StructuresAshishVivekSukh
Rebound Hammer test is a Non-destructive testing method of concrete.
Rapid indication of the compressive strength of the concrete.
The rebound hammer is also called as Schmidt hammer.
Consist of a spring controlled mass that slides on a plunger within a tubular housing.
Experimental studies in Ultrasonic Pulse Velocity of rollerJoel 'almeida
This paper presents the experimental investigation results of Ultrasonic Pulse Velocity (UPV) tests conducted on roller compacted
concrete pavement (RCCP) material containing Class F fly ash of as mineral admixture. River sand, M-sand and combination of Msand
and River sand are used as fine aggregate in this experimental work. Three types of fly ash roller compacted concrete mixes are
prepared using above three types of fine aggregates and they are designated as Series A (River sand), Series B (manufactured sand)
and Series C (combination of River sand and M-sand). In each series the fly ash content in place of cement is varied from 0% to
60%. In each series and for different ages of curing (i.e 3, 7, 28 and 90 days) forty two cube specimens are cast and tested for compressive
strength and UPV. The UPV results of fly ash containing roller compacted concrete pavement (FRCCP) show lower values at all ages
from 3 days to 90 days in comparison with control mix concrete (0% fly ash) in all mixes. However, it is also observed that Series B and C
mixes containing fly ash show better results in UPV values, compressive strength and Dynamic Elastic Modulus in comparison to Series
A mixes with fly ash. Relationships between compressive strength of FRCCP and UPV and Dynamic Elastic Modulus are proposed for
all series mixes. A new empirical equation is proposed to determine the Dynamic Elastic Modulus of FRCCP.
Influence of contact friction conditions on thin profile simulationVan Canh Nguyen
The paper presents the development of the Finite Element model for simulation of thin
aluminium profile extrusion of both solid and hollow shapes. The analysis has shown that the material
flow in simulation is very dependent on the friction model. Experimental and theoretical studies show
that friction traction on the interface between the tool and the deformed material can be represented as
a combination of adhesive friction force and the force that is required to deform surface asperities. In
aluminium extrusion we can clearly distinguish two different areas with respect to friction conditions
such as sticking and sliding and transient zones between them. The lengths of these zones are also
dependent on variation of the choke angle and actual thickness of the profile. To get these values the
material flow problem is to be coupled with the simulation of the tools deformation. A series of
experiments with specially designed tools have been done to investigate how the bearing length and
choke angle may influence the extension of different friction zones and by these means vary the
material flow pattern. The friction models have also been tested with industrial profiles of complex
shapes and have shown good correspondence to reality.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Presentation at icotom17 dresden 20140826Xiaodong Guo
ICOTOM stands for International Conference on Textures of Materials. it is the biggest conference in the field of texture and microstructure of materials in the world.
2.evaluation of crack propagation phenomenon in bituminous mixEditorJST
Crack propagation was experimentally simulated using semicircular specimen with a crack initiated on one side. The work shows that the rate of crack propagation can be described by a power relationship between the stiffness of the mixture and the number of cycles to failure, which is mixture and binder dependent.
Introduction to HyperWorks for linear static and non linear quasi static anal...Altair
The suite HyperWorks (HW) was introduced in a course of master degree in Mechanical Engineering. The course titled “Design of Production Processes” has the aim to develop a market-pull product in a set of steps beginning with a perception of a market opportunity and ending in production, sale and delivery activities. HW was used for linear static and non linear quasi static analyses to correctly size the different parts which make up the investigated product. The lessons were organized starting from a general overview on Finite Element Analyses, followed by an introduction to HW interface and, finally, the steps necessary to set-up and to analyze the results of different types of simulation were described. Furthermore, topology optimization of particular sub-components were performed by Inspire.
Speakers
Francesco Gagliardi, University of Calabria
This is an easy introduction to the concept of Genetic Algorithms. It gives Simple explanation of Genetic Algorithms. Covers the major steps that are required to implement the GA for your tasks.
For other resources visit: http://pimpalepatil.googlepages.com/
For more information mail me on pbpimpale@gmail.com
A Presentation About The Introduction Of Finite Element Analysis (With Example Problem) ... (Download It To Get More Out Of It: Animations Don't Work In Preview) ... !
Rebound hammer test - Maintenance and Rehabilitation of StructuresAshishVivekSukh
Rebound Hammer test is a Non-destructive testing method of concrete.
Rapid indication of the compressive strength of the concrete.
The rebound hammer is also called as Schmidt hammer.
Consist of a spring controlled mass that slides on a plunger within a tubular housing.
Experimental studies in Ultrasonic Pulse Velocity of rollerJoel 'almeida
This paper presents the experimental investigation results of Ultrasonic Pulse Velocity (UPV) tests conducted on roller compacted
concrete pavement (RCCP) material containing Class F fly ash of as mineral admixture. River sand, M-sand and combination of Msand
and River sand are used as fine aggregate in this experimental work. Three types of fly ash roller compacted concrete mixes are
prepared using above three types of fine aggregates and they are designated as Series A (River sand), Series B (manufactured sand)
and Series C (combination of River sand and M-sand). In each series the fly ash content in place of cement is varied from 0% to
60%. In each series and for different ages of curing (i.e 3, 7, 28 and 90 days) forty two cube specimens are cast and tested for compressive
strength and UPV. The UPV results of fly ash containing roller compacted concrete pavement (FRCCP) show lower values at all ages
from 3 days to 90 days in comparison with control mix concrete (0% fly ash) in all mixes. However, it is also observed that Series B and C
mixes containing fly ash show better results in UPV values, compressive strength and Dynamic Elastic Modulus in comparison to Series
A mixes with fly ash. Relationships between compressive strength of FRCCP and UPV and Dynamic Elastic Modulus are proposed for
all series mixes. A new empirical equation is proposed to determine the Dynamic Elastic Modulus of FRCCP.
Influence of contact friction conditions on thin profile simulationVan Canh Nguyen
The paper presents the development of the Finite Element model for simulation of thin
aluminium profile extrusion of both solid and hollow shapes. The analysis has shown that the material
flow in simulation is very dependent on the friction model. Experimental and theoretical studies show
that friction traction on the interface between the tool and the deformed material can be represented as
a combination of adhesive friction force and the force that is required to deform surface asperities. In
aluminium extrusion we can clearly distinguish two different areas with respect to friction conditions
such as sticking and sliding and transient zones between them. The lengths of these zones are also
dependent on variation of the choke angle and actual thickness of the profile. To get these values the
material flow problem is to be coupled with the simulation of the tools deformation. A series of
experiments with specially designed tools have been done to investigate how the bearing length and
choke angle may influence the extension of different friction zones and by these means vary the
material flow pattern. The friction models have also been tested with industrial profiles of complex
shapes and have shown good correspondence to reality.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Presentation at icotom17 dresden 20140826Xiaodong Guo
ICOTOM stands for International Conference on Textures of Materials. it is the biggest conference in the field of texture and microstructure of materials in the world.
2.evaluation of crack propagation phenomenon in bituminous mixEditorJST
Crack propagation was experimentally simulated using semicircular specimen with a crack initiated on one side. The work shows that the rate of crack propagation can be described by a power relationship between the stiffness of the mixture and the number of cycles to failure, which is mixture and binder dependent.
Introduction to HyperWorks for linear static and non linear quasi static anal...Altair
The suite HyperWorks (HW) was introduced in a course of master degree in Mechanical Engineering. The course titled “Design of Production Processes” has the aim to develop a market-pull product in a set of steps beginning with a perception of a market opportunity and ending in production, sale and delivery activities. HW was used for linear static and non linear quasi static analyses to correctly size the different parts which make up the investigated product. The lessons were organized starting from a general overview on Finite Element Analyses, followed by an introduction to HW interface and, finally, the steps necessary to set-up and to analyze the results of different types of simulation were described. Furthermore, topology optimization of particular sub-components were performed by Inspire.
Speakers
Francesco Gagliardi, University of Calabria
This is an easy introduction to the concept of Genetic Algorithms. It gives Simple explanation of Genetic Algorithms. Covers the major steps that are required to implement the GA for your tasks.
For other resources visit: http://pimpalepatil.googlepages.com/
For more information mail me on pbpimpale@gmail.com
A Presentation About The Introduction Of Finite Element Analysis (With Example Problem) ... (Download It To Get More Out Of It: Animations Don't Work In Preview) ... !
Design of Equal Channel Angular Extrusion For Grain Refinement Pratik Saxena
Equal Channel Angular Extrusion Grain refinement by severe deformation and FEA of ECAE deformation was carried out using Hyper mesh, Abaqus for optimization of Billet.
Tasks Performed
Effect of friction on Strain
Effect of die angle on Strain
Effect of Fillet radius on Strain
Effect of Thickness on Strain
Interference fit simulation on pin joint by using ansyseSAT Journals
Abstract The present study objective is to investigate the effect of interference fit range of contact stress distribution of centrally holed plate, this will be used in riveted joints, permanent fasteners joints applications. There are a lot of studies are carried out related to the effect of interference fit to enhance the life of components, however, present work aims to study the effect of contact stress distribution of a interference fit by considering properties of Stainless Steel and Aluminium alloy. Keywords: Interference Fit, Stainless Steel and Aluminium Alloy Materials, Contact Stresses and ANSYS
Gaskets in joints play an important role in the sealing performance of bolted flange joints, and their behavior is
complex due to nonlinear material properties combined with permanent deformation. The variation of contact stresses due to
the pressure of the flange and the material properties of the gasket play important roles in achieving a leak proof joint. In this
paper, a three-dimensional finite element analysis (FEA) of bolted flange joints has been carried out by taking experimentally
obtained loading and unloading characteristics of the gaskets for various thicknesses and loads. Analysis shows that the
distribution of contact stress has a more dominant effect on sealing performance than the limit on flange rotation specified by
ASME.
Under repeated impact composite domes subjected 6 J energy, changes locally with
increasing drop height. The action of the dynamic load generates reactions at the
support and bending moments at points on the surface of the composite. The peak loads
were noted to increase and stabilise about some mean value; and the 150mm diameter
shell was more damage tolerant compared to the 200 mm diameter one.
Mix Design of High Strength Concrete by Partially Replacement of Cement by Fl...dbpublications
Concrete is the commonly used material which is mostly used in civil engineering structures. The present investigation deals with high strength concrete of M60 by partial replacement of OPC with fly ash in percentages of 0%, 5%, 10% and 15% in various ratios and also add Masterpel 777 super plasticizer for workability purpose. After completion of experiment we have to do the compressive, Flexure and split tensile strength tests during the periods of 7,14 and 28 days. In this design project we have designed M60 grade concrete using Department of Environment (DOE) mix design method.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
International Journal of Engineering Research and Development is an international premier peer reviewed open access engineering and technology journal promoting the discovery, innovation, advancement and dissemination of basic and transitional knowledge in engineering, technology and related disciplines.
Finite Elements Modeling and Analysis of Double Skin Composite PlatesIOSR Journals
Abstract: Double skin composite (DSC) is a form of “steel/concrete/steel” sandwich structure; the steel plates
are connected to a sandwiched concrete core with welded stud shear connectors. In the present paper, a finite
element model for Double Skin Composite (DSC) panels subjected to quasi-static loading is developed. A series
of quasi-static finite elements models are used to analyze deformation and energy absorption capacity of such
system, when perforated by rigid penetrator with conical nose shape. Pilot test model is used to investigate the
failure pattern in the composite panel. The obtained results are compared to the experimental results; good
agreements are obtained between finite element and previous experimental results. Results show that such
elements have great ability of absorbing energy when subjected to perforation due to ductility of lower plate
skin and vertical stiffness of lower shear studs.
Modelling and Analysis of Hybrid Composite Joint Using Fem in AnsysIOSR Journals
Abstract: Composite materials are widely used in the various Fields. Due to the high strength they are widely
used in the low weight constructions and also used as a suitable alternative to metals. In various applications
and also for joining various composite parts together, they are fastened together using adhesives or Mechanical
fasteners. Modeling and static analysis of 3-D Models of joints such as bonded, riveted and hybrid. The results
were found in terms of vonmises stress, shear stress, and normal stress for stress distribution. ANSYS FEA tool
has been used for stress distribution characteristics of various configurations of double riveted single lap joint
with three joining methods namely bonded, riveted and hybrid the present study deals with the analysis of single
lap joint subjected to the given tensile load and the stress distribution in the members under various design
conditions are found.
Similar to Finite Element Prism Presentation_Print Slides (20)
2. 1. Goals
Construct a micro-simulation finite element model
on Abaqus/CAE that closely represents a
standard test prism
Conduct a parametric analysis to investigate the
effect of mortar joint thickness as well as stiffness
strength on the behaviour of masonry prisms
Briefly compare results with those published in
literature
3. 2. Background
Masonry compressive strength permeates all
design equations
Prism testing is regarded as the standard
method to determine the compressive strength
The results of prism testing are highly
susceptible to such factors as:
Mortar joint thickness
Mortar properties
Block strength
Prism geometry (h/t ratio)
4. 3. Analytical Program
Prism
5 mm
Joint
Eb/Em =
0.5
Eb/Em =
1.0
Eb/Em =
2.0
10 mm
Joint
Eb/Em =
0.5
Eb/Em =
1.0
Eb/Em =
2.0
15 mm
Joint
Eb/Em =
0.5
Eb/Em =
1.0
Eb/Em =
2.0
Note: Eb/Em is the modular ratio of block to
mortar
5. 4. Finite Element Model -
Assumptions
Geometry assumptions taken:
fillets at web to face shell connections were given a radius
of 8mm for lack of a better reference in the literature
joint interfaces between the blocks and mortar are assumed
to be rigid since frictional forces created by compression
prevent slipping
tapering of face shells and webs were eliminated
Material is assumed linear elastic with loading at
less than 50% of failure
Material is taken as homogeneous and isotropic
6. 5. Finite Element Model -
Creation
Total of 8828
elements
Block and mortar are
a 3D deformable
solid extrusion
Block is
190x390x190
Mortar is 32mm wide
times various
Blocks: linear 8 node
brick elements –
meshed at 20 mm with
10 mm surface mesh
top&bottom
Mortar joint: quadratic
20 node 3D brick with
10 mm mesh
Geometry Mesh
Creation 1 Creation 2 Creation 3
8. 5. Finite Element Model -
Creation
Creation 1 Creation 2 Creation 3
All materials are
homo-geneous and
isotropic
Block:
E = 21660 MPa
ν = 0.2
Mortar:
E = Varies as 0.5 to 2 of
block’s modulus
ν = 0.18
Material Assembly
Prior to assembly 6
surfaces were
assigned
2 for each mortar
layer
1 for each interface
block layer
4 instances total
were imported
2 blocks
2 mortar joint layers
10. 5. Finite Element Model -
Creation
Tied all 6 surfaces
together Mortar
joint “binds” the
interface and the
compressive forces
create additional
frictional resistance
One step was
required
Boundary conditions
taken as fixed
(encastre) at the
bottom
Loading is top surface
pressure of 8 MPa
(approx. 50% of failure)
Surface Interaction Steps
Creation 1 Creation 2 Creation 3
12. 6. Results – General Trends
Minimum Principal Stresses
[10M2E]
Maximum Principal Stresses
[10M2E]
General Trends 1 General Trends 2 Parameter Variation 1 Parameter Variation 2
High compressive
stresses
Almost zero
compression
High tensile stress
concentrations
13. 6. Results – General Trends
Minimum Principal Stresses
[10M2E]
Maximum Principal Stresses
[10M2E]
Block face shell
in compression
High compression concentrations in
mortar
No tension in face
shells
Tension in mortar
at intersections
General Trends 1 General Trends 2 Parameter Variation 1 Parameter Variation 2
14. 6. Results – Parameter
Variation
-12
-11
-10
-9
-8
-7
-6
0 0.5 1 1.5 2 2.5
MinimumPrincipalStress[MPa]
Eb/Em Ratio
Minimum Principal Stresses in Hollow Concrete Prisms
5 mm Joint - Block Stress
5 mm Joint - Mortar Stress
10 mm Joint - Block Stress
10 mm Joint - Mortar Stress
15 mm Joint - Block Stress
15 mm Joint - Mortar Stress
Compressive stresses increased in
mortar with THICKER joints and
No distinction in block compressive
stresses with variation of joint thickness or
properties
General Trends 1 General Trends 2 Parameter Variation 1 Parameter Variation 2
15. 6. Results – Parameter
Variation
-1.5
-1
-0.5
0
0.5
1
1.5
2
0 0.5 1 1.5 2 2.5
MaximumPrincipalStress[MPa]
Eb/Em Ratio
Maximum Principal Stresses in Hollow Concrete Prisms
5 mm Joint - Block Stress
5 mm Joint - Mortar Stress
10 mm Joint - Block Stress
10 mm Joint - Mortar Stress
15 mm Joint - Block Stress
15 mm Joint - Mortar Stress
For an Eb/Em ratio less than 1 mortar is in
compression but in tension for a ratio greater
than 1!
Higher stresses in general for THINNER joints
Block: less tensile stress with a
decrease in joint thickness and
softer mortar ( increasing Eb/Em
ratio)
General Trends 1 General Trends 2 Parameter Variation 1 Parameter Variation 2
16. 7. Future Work
Study the nonlinear behaviour of prisms at a
load close to failure
Determine whether or not the parameter
variation in this study will actually influence the
ultimate compressive strength of the prism
Study the influence of prism geometry on the
compressive strength – vary h/t ratio
Elaborate on the cause of
tension/compression variation of mortar as a
function of Eb/Em ratio
Simulate an entire wall wythe and compare
results with those obtained from prisms
17. 8. Conclusion
Finite element modeling is a very useful,
practical, and economical method to study the
cause and effect of parameter variation for
physical problems
The model simulated is in good agreement with
prism tests found in the literature
Varying mortar joint thickness and properties
has minimal effect on block stress propagation
Less compressive stresses are observed in
mortar with thinner joints and higher Eb/Em
ratios
Very interesting results observed for maximum
Note: the code 10M2E stands for a 10mm mortar joint and an Eb/Em ratio of 2
Less confinement with thicker mortar joints causes higher compressive stresses
Very strange! Thinner mortar joints causes higher compressive stresses for Eb/Em less than 1 AND higher tensile stresses for a ratio greater than 1?? I can’t explain this....