Brief explanation and refreshment of force & moment which generally referred to as load or loading. For pressure vessel or basic structural design for oil & gas, manufacturing or any relevant field for engineers, designers, technicians, or students.
The document discusses the process of manufacturing gaskets from raw rubber material.
1) The raw rubber bun is cut into sheets using a bun splitting machine and then fed into a laminating machine which applies heat and pressure.
2) A CNC die cutting machine stamps out the gasket shapes from the rubber sheets.
3) Holes may be punched into the gaskets using special mandrels and punches, requiring accuracy depending on the gasket's intended use.
1) The document discusses the boundary conditions and design considerations for vacuum chambers. It covers external and internal pressures, temperature ranges, material properties, and relevant construction codes.
2) Key factors include withstanding differential pressures of 1 bar, accommodating temperature changes from room temperature up to bake-out temperatures of 150-300°C, and choosing materials like stainless steel or aluminum alloys that don't outgas at low pressures and temperatures.
3) The document provides steps for calculating the minimum wall thickness of a cylindrical vacuum chamber according to the ASME pressure vessel code, selecting a thickness of 1.6mm to withstand full vacuum pressures.
This document provides an overview of stress analysis and pressure vessels. It discusses key topics including:
- Common pressure vessel shapes like cylinders and spheres and the stresses they experience
- Failure modes from compressive and tensile stresses like buckling and cracking
- Hooke's law and relating stresses and strains for 3D analysis
- Defining and calculating important strains like hoop, longitudinal, and volumetric strains
- Material properties like Young's modulus, Poisson's ratio, bulk and shear moduli
It also provides an ongoing example calculation to illustrate applying the concepts to analyzing stresses and strains in a cylindrical pressure vessel.
1. The document defines static load, failure, material strength properties including yield strength and ultimate strength in tension and compression.
2. It describes ductile materials as deforming significantly before fracturing, while brittle materials yield very little before fracturing and have similar yield and ultimate strengths.
3. The maximum shear stress theory and distortion energy theory are introduced as failure theories used in design based on yield strength and ultimate strength respectively. Safety factors are used to avoid failure based on these theories.
This document provides information on the design of pressure vessels. It defines pressure vessels as containers designed to operate above 15 Psi and discusses why proper design is important to prevent failure. The document outlines various codes used for pressure vessel design and stresses that vessels experience from internal pressure, weight, and other loads. It also describes common pressure vessel components like shells, heads, nozzles, and supports, and provides formulas for calculating thicknesses of different vessel components.
Machine design possible interview questionsDr. Ramesh B
The document discusses ISO quality standards and their applications. ISO-9001 applies to design, development, production and servicing. ISO-9002 is for production and servicing, and ISO-9003 is for final inspection and testing. It also provides definitions and applications of various mechanical engineering terms related to machine elements, materials, design, analysis and computer-aided design.
The document discusses wheel rims, including their importance, common materials used like aluminum alloys and steel, and production processes. It describes the key components of a wheel, like the rim and disk. Forging is outlined as the best method to produce wheel rims due to advantages like strength and lack of impurities compared to casting. The production process involves six steps: making the disk, rim, assembling them, and finishing.
Using the scholar data and researcher point of view on composite materials. We illustrate the application of composite material in aerospace industry. Composites are highly efficient to make the parts and structure of aircrafts. We found the characteristics of the composite material make it very suitable material for aerospace industry. Composites like carbon fiber, carbon epoxy, and glass epoxy are very light and high strength which is mostly used in aircraft industries. In addition, our study takes the first step to highlight the uses of composite material to manufacture the different parts of aircraft's.
The document discusses the process of manufacturing gaskets from raw rubber material.
1) The raw rubber bun is cut into sheets using a bun splitting machine and then fed into a laminating machine which applies heat and pressure.
2) A CNC die cutting machine stamps out the gasket shapes from the rubber sheets.
3) Holes may be punched into the gaskets using special mandrels and punches, requiring accuracy depending on the gasket's intended use.
1) The document discusses the boundary conditions and design considerations for vacuum chambers. It covers external and internal pressures, temperature ranges, material properties, and relevant construction codes.
2) Key factors include withstanding differential pressures of 1 bar, accommodating temperature changes from room temperature up to bake-out temperatures of 150-300°C, and choosing materials like stainless steel or aluminum alloys that don't outgas at low pressures and temperatures.
3) The document provides steps for calculating the minimum wall thickness of a cylindrical vacuum chamber according to the ASME pressure vessel code, selecting a thickness of 1.6mm to withstand full vacuum pressures.
This document provides an overview of stress analysis and pressure vessels. It discusses key topics including:
- Common pressure vessel shapes like cylinders and spheres and the stresses they experience
- Failure modes from compressive and tensile stresses like buckling and cracking
- Hooke's law and relating stresses and strains for 3D analysis
- Defining and calculating important strains like hoop, longitudinal, and volumetric strains
- Material properties like Young's modulus, Poisson's ratio, bulk and shear moduli
It also provides an ongoing example calculation to illustrate applying the concepts to analyzing stresses and strains in a cylindrical pressure vessel.
1. The document defines static load, failure, material strength properties including yield strength and ultimate strength in tension and compression.
2. It describes ductile materials as deforming significantly before fracturing, while brittle materials yield very little before fracturing and have similar yield and ultimate strengths.
3. The maximum shear stress theory and distortion energy theory are introduced as failure theories used in design based on yield strength and ultimate strength respectively. Safety factors are used to avoid failure based on these theories.
This document provides information on the design of pressure vessels. It defines pressure vessels as containers designed to operate above 15 Psi and discusses why proper design is important to prevent failure. The document outlines various codes used for pressure vessel design and stresses that vessels experience from internal pressure, weight, and other loads. It also describes common pressure vessel components like shells, heads, nozzles, and supports, and provides formulas for calculating thicknesses of different vessel components.
Machine design possible interview questionsDr. Ramesh B
The document discusses ISO quality standards and their applications. ISO-9001 applies to design, development, production and servicing. ISO-9002 is for production and servicing, and ISO-9003 is for final inspection and testing. It also provides definitions and applications of various mechanical engineering terms related to machine elements, materials, design, analysis and computer-aided design.
The document discusses wheel rims, including their importance, common materials used like aluminum alloys and steel, and production processes. It describes the key components of a wheel, like the rim and disk. Forging is outlined as the best method to produce wheel rims due to advantages like strength and lack of impurities compared to casting. The production process involves six steps: making the disk, rim, assembling them, and finishing.
Using the scholar data and researcher point of view on composite materials. We illustrate the application of composite material in aerospace industry. Composites are highly efficient to make the parts and structure of aircrafts. We found the characteristics of the composite material make it very suitable material for aerospace industry. Composites like carbon fiber, carbon epoxy, and glass epoxy are very light and high strength which is mostly used in aircraft industries. In addition, our study takes the first step to highlight the uses of composite material to manufacture the different parts of aircraft's.
THERMAL & STRUCTURAL ANALYSIS ON DISC BRAKE ROTOR WITH DRAFTING USING CATIA ...NitinSuryawanshi12
Project consist of two types of analysis thermal , structural & VBA Programming.
Thermal analysis is done to check the thermal resistance of model Honda Unicorn 160.
Structural analysis is done to find the strength of the model.
VBA programming is used to automate drafting task.
This document discusses additive manufacturing (AM), also known as 3D printing. It begins with definitions of AM and similar terms. Key benefits of AM include increased design freedom, lighter weight structures, and the ability to create complex internal channels or combine multiple parts. The document outlines several industrial sectors utilizing AM like aerospace, energy, and medical. Specific defects that can occur in AM materials if process parameters are incorrect include unmolten powder particles, lacks of fusion, pores, cracks, inclusions, residual stresses, and poor surface roughness.
The document discusses the design, inspection, and repair of pressure vessels. It covers several key topics in 3 paragraphs or less:
Material selection and manufacturing processes are important considerations in pressure vessel design. Pressure vessels are designed to safely contain pressure and withstand operating stresses and temperatures over their design life. Common materials used include steel and aluminum alloys.
Design requirements include calculating stresses, dimensions, and thickness to withstand the internal pressure. Factors like pressure, vessel geometry, material properties, and temperature are considered. Standards like the ASME code provide design procedures and formulas.
Inspection and maintenance are important to determine fitness for service. The maximum allowable working pressure is based on design calculations and limits for each vessel component
A seminar presentation for major or minor project for BTech/MTech students on design of pressure vessels using composite materials. for complete presentation log on to www.mechieprojects.com
This document provides guidelines for the design of steel stacks. It covers terminology, loading considerations, materials, structural design, construction, inspection, maintenance and painting. Key points include:
1. Stack design is complex due to susceptibility to wind and seismic vibrations, as well as corrosion. EPA regulations also emphasize mechanical design.
2. Stacks can be free standing, multi-flue, base supported and braced, or base supported and guyed. Vertical and lateral supports are considered.
3. Stacks may be laterally supported by other structures like towers. Structural interaction must be considered in analysis. Braced stacks require smaller foundations.
Mechanical Design and Analysis of Steel Stack by Varying its Height with Cons...IRJET Journal
This document summarizes the mechanical design and analysis of steel stacks with varying heights but constant diameter. The study focused on designing steel stacks for a steel plant in Salem, India according to international codes and standards. Steel stacks with diameters of 1.9m and heights of 30, 40, 50, and 60m were modeled and analyzed using finite element software to understand the effects of geometry on design aspects. Manual calculations were performed and validated against finite element analysis results. The objectives were to design the stacks according to codes while incorporating finite element analysis to gain insights into steel stack design.
This document discusses the design of extrusion dies. It first defines extrusion as a process where a block of material is forced to flow through a die opening of smaller cross-section by compression. It then discusses die design, noting that the die characteristics for a rectangular cross-section can be calculated using a formula involving factors like the greater and lesser cross-section dimensions, flow coefficient, and die length. Several factors that influence die design are also outlined, including material rheology, non-Newtonian fluid behavior, melt behavior, density, and flow analysis methods. Equations for calculations involving momentum, energy, and mass balances are also mentioned.
This document provides an overview and contents of an online course about ASME Section I and Section VIII fundamentals. It includes:
- An introduction to the ASME Boiler and Pressure Vessel Code which contains 12 sections covering various topics like power boilers, materials, pressure vessels, welding qualifications, and piping codes.
- Summaries of the scopes and requirements of key sections like Section I (power boilers), Section VIII (pressure vessels), and the B31 piping codes.
- Information on ASME certification and inspection procedures for pressure equipment.
- A note on converting between imperial and metric units in the ASME codes.
- An introduction to the fundamentals and design requirements
This document provides an overview of key sections of the ASME Boiler and Pressure Vessel Code for calculating the minimum thickness and maximum allowable working pressure of cylindrical pressure vessel components. It discusses sections I and VIII-1, describing the materials and design requirements, as well as the formulas in Section I for piping, tubes, drums, and headers under internal pressure. The formulas calculate minimum thickness or maximum allowable working pressure based on factors like diameter, pressure, stress, and temperature.
The document discusses the key processes involved in tyre manufacturing, including compounding and mixing rubber and other materials, milling and calendaring the rubber into sheets, extruding tread and other components, assembling the components on a tyre building machine, curing and vulcanizing the assembled tyre, and final inspection and finishing of the cured tyre. Tyre manufacturing requires combining many raw materials like various rubber compounds, carbon black, fabric, and steel wires and cables through mixing, shaping, building, and curing processes to produce the final product.
Klaus P. Redmann is the Director of Quality at Disc Spring Technology, LLC. He was born in Germany and received his Masters in Chemical Engineering in 1977. His first job after university brought him to the US, where he has resided for 36 years. In addition to his role at DST, Klaus owns Redmann Quality Engineering Services, which performs quality assurance services for nuclear fuel fabrication. Klaus has extensive experience in quality systems auditing and is certified in quality engineering.
Minor project Report on DESIGN OF HYDRAULIC SHEET METAL PUNCHING MACHINE USIN...Shubham Dhaneshree
This document provides a minor project report on the design of a hydraulic sheet metal punching machine using hydro-mechanical leverage. The project was carried out by six students at Mahakal Institute of Technology and Science under the guidance of Professor Pankaj Gera. The project aims to integrate the mechanical advantages of leverage and hydraulics to facilitate easier operation of punching smaller metal parts and reduce reliance on heavy hydraulic machines. The report includes an introduction to punching machines and their components, a literature review on leverage and hydraulics, a design and analysis of the proposed machine, drawings of the machine parts, and expected results.
Applications of 3D printers in construction industry - Nithin NNithin N
3D printing, also known as additive manufacturing, is a process where 3D objects are created by laying down successive layers of material. There are various methods of 3D printing including stereolithography, selective laser sintering, and fused deposition modeling. The document discusses applications of 3D printing in construction industry such as printing entire buildings, houses, and interior elements layer by layer. Specifically, it describes a process called contour crafting that has printed walls using concrete and a company that has printed 10 houses in a single day using recycled materials. The future of 3D printing in construction may allow printing large structures through assembly of prefabricated parts.
This document summarizes a student project to design a high temperature and pressure naphtha piping system. It includes the project members, objectives to understand piping design concepts and flexibility, and perform stress analysis manually and using CAESER II software. The problem statement is to design a 6" diameter pipe connecting a centrifugal pump and pressure vessel operating at 300°C and 21.4kg/cm2. The document outlines the design methodology, calculations, material selection, and references used.
This document discusses powder bed fusion, which is an additive manufacturing technique where a laser, heat or electron beam is used to melt and fuse powdered material together to form a 3D object. It begins with an introduction to manufacturing and additive manufacturing. It then defines powder bed fusion and notes its classification and process. The key advantages are wide material choice, powder recycling, low cost and design complexity. Disadvantages include slow speed, high power usage and potential for thermal distortion. In conclusion, powder bed fusion allows for production of heat-resistant components while optimizing weight and reducing lead times.
This document discusses the manufacturing process of pistons. It is divided into two main sections on casting and forging pistons. In the casting process, aluminum ingots are melted and poured into molds to form the basic piston shape. Additional machining steps such as dehorning, hardening, CNC lathe machining and grinding are used to finalize the piston dimensions and features. The forging process starts with heating and pressing aluminum slugs to shape them. Further steps like drilling holes, milling surfaces and finishing grinding are used to complete forged pistons. Cast pistons are lighter and cheaper while forged pistons are more expensive but suitable for high speeds.
The 3D printing process builds a three-dimensional object from a computer-aided design model, usually by successively adding material layer by layer, which is why it is also called additive manufacturing,
Design by Analysis - A general guideline for pressure vesselAnalyzeForSafety
This presentation file is provided by Mr. Ghanbari and published under permission.
The presentation gives an introduction and general guideline for pressure vessel design by analysis.
The “design by analysis” procedures are intended to guard against eight possible pressure vessel failure modes by performing a detailed stress analysis of the vessel with the sufficient design factors. The failure modes are:
1.excessive elastic deformation, including elastic instability,
2.excessive plastic deformation,
3.brittle fracture,
4.stress rupture/creep deformation (inelastic),
5.plastic instability - incremental collapse,
6.high strain - low cycle fatigue,
7.stress corrosion, and
8.corrosion fatigue
Most of the “design by analysis” procedures that are given in ASME BPVC relate to designs based on “elastic analysis.”
The design-by-analysis requirements are organized based on protection against the failure modes listed below. The component shall be evaluated for each applicable failure mode. If multiple assessment procedures are provided for a failure mode, only one of these procedures must be satisfied to qualify the design of a component.
a)All pressure vessels within the scope of this Division, irrespective of size or pressure, shall be provided with protection against overpressure in accordance with the requirements of this Part.
b)Protection Against Plastic Collapse – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules.
c)Protection Against Local Failure – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules. It is not necessary to evaluate the local strain limit criterion if the component design is in accordance with Part 4 (i.e. component wall thickness and weld detail per paragraph 4.2).
d)Protection Against Collapse From Buckling – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules and the applied loads result in a compressive stress field.
e)Protection Against Failure From Cyclic Loading – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules and the applied loads are cyclic. In addition, these requirements can also be used to qualify a component for cyclic loading where the thickness and size of the component are established using the design-by-rule requirements of Part 4.
This document describes an experiment to determine the shear force and bending moment of a beam using an apparatus. It includes the objective, apparatus description, related theory, procedure, sample calculations and results in tables and graphs. The conclusions are that there is a linear relationship between load and shear force/bending moment, and experimental results match theoretical values closely. Applications of shear force and bending moment diagrams in structural design are also discussed.
The document discusses structural design considerations for steel structures. It covers:
1. Factors that must be considered in arranging structural components, such as functional requirements, environmental factors, and soil conditions.
2. Advantages of steel structures such as smaller sections, homogeneity, and availability of pre-rolled sections.
3. Limit states design methodology and factors considered, such as load and material factors, compared to allowable stress design.
4. Common structural elements, sections, and connections used in steel structures.
THERMAL & STRUCTURAL ANALYSIS ON DISC BRAKE ROTOR WITH DRAFTING USING CATIA ...NitinSuryawanshi12
Project consist of two types of analysis thermal , structural & VBA Programming.
Thermal analysis is done to check the thermal resistance of model Honda Unicorn 160.
Structural analysis is done to find the strength of the model.
VBA programming is used to automate drafting task.
This document discusses additive manufacturing (AM), also known as 3D printing. It begins with definitions of AM and similar terms. Key benefits of AM include increased design freedom, lighter weight structures, and the ability to create complex internal channels or combine multiple parts. The document outlines several industrial sectors utilizing AM like aerospace, energy, and medical. Specific defects that can occur in AM materials if process parameters are incorrect include unmolten powder particles, lacks of fusion, pores, cracks, inclusions, residual stresses, and poor surface roughness.
The document discusses the design, inspection, and repair of pressure vessels. It covers several key topics in 3 paragraphs or less:
Material selection and manufacturing processes are important considerations in pressure vessel design. Pressure vessels are designed to safely contain pressure and withstand operating stresses and temperatures over their design life. Common materials used include steel and aluminum alloys.
Design requirements include calculating stresses, dimensions, and thickness to withstand the internal pressure. Factors like pressure, vessel geometry, material properties, and temperature are considered. Standards like the ASME code provide design procedures and formulas.
Inspection and maintenance are important to determine fitness for service. The maximum allowable working pressure is based on design calculations and limits for each vessel component
A seminar presentation for major or minor project for BTech/MTech students on design of pressure vessels using composite materials. for complete presentation log on to www.mechieprojects.com
This document provides guidelines for the design of steel stacks. It covers terminology, loading considerations, materials, structural design, construction, inspection, maintenance and painting. Key points include:
1. Stack design is complex due to susceptibility to wind and seismic vibrations, as well as corrosion. EPA regulations also emphasize mechanical design.
2. Stacks can be free standing, multi-flue, base supported and braced, or base supported and guyed. Vertical and lateral supports are considered.
3. Stacks may be laterally supported by other structures like towers. Structural interaction must be considered in analysis. Braced stacks require smaller foundations.
Mechanical Design and Analysis of Steel Stack by Varying its Height with Cons...IRJET Journal
This document summarizes the mechanical design and analysis of steel stacks with varying heights but constant diameter. The study focused on designing steel stacks for a steel plant in Salem, India according to international codes and standards. Steel stacks with diameters of 1.9m and heights of 30, 40, 50, and 60m were modeled and analyzed using finite element software to understand the effects of geometry on design aspects. Manual calculations were performed and validated against finite element analysis results. The objectives were to design the stacks according to codes while incorporating finite element analysis to gain insights into steel stack design.
This document discusses the design of extrusion dies. It first defines extrusion as a process where a block of material is forced to flow through a die opening of smaller cross-section by compression. It then discusses die design, noting that the die characteristics for a rectangular cross-section can be calculated using a formula involving factors like the greater and lesser cross-section dimensions, flow coefficient, and die length. Several factors that influence die design are also outlined, including material rheology, non-Newtonian fluid behavior, melt behavior, density, and flow analysis methods. Equations for calculations involving momentum, energy, and mass balances are also mentioned.
This document provides an overview and contents of an online course about ASME Section I and Section VIII fundamentals. It includes:
- An introduction to the ASME Boiler and Pressure Vessel Code which contains 12 sections covering various topics like power boilers, materials, pressure vessels, welding qualifications, and piping codes.
- Summaries of the scopes and requirements of key sections like Section I (power boilers), Section VIII (pressure vessels), and the B31 piping codes.
- Information on ASME certification and inspection procedures for pressure equipment.
- A note on converting between imperial and metric units in the ASME codes.
- An introduction to the fundamentals and design requirements
This document provides an overview of key sections of the ASME Boiler and Pressure Vessel Code for calculating the minimum thickness and maximum allowable working pressure of cylindrical pressure vessel components. It discusses sections I and VIII-1, describing the materials and design requirements, as well as the formulas in Section I for piping, tubes, drums, and headers under internal pressure. The formulas calculate minimum thickness or maximum allowable working pressure based on factors like diameter, pressure, stress, and temperature.
The document discusses the key processes involved in tyre manufacturing, including compounding and mixing rubber and other materials, milling and calendaring the rubber into sheets, extruding tread and other components, assembling the components on a tyre building machine, curing and vulcanizing the assembled tyre, and final inspection and finishing of the cured tyre. Tyre manufacturing requires combining many raw materials like various rubber compounds, carbon black, fabric, and steel wires and cables through mixing, shaping, building, and curing processes to produce the final product.
Klaus P. Redmann is the Director of Quality at Disc Spring Technology, LLC. He was born in Germany and received his Masters in Chemical Engineering in 1977. His first job after university brought him to the US, where he has resided for 36 years. In addition to his role at DST, Klaus owns Redmann Quality Engineering Services, which performs quality assurance services for nuclear fuel fabrication. Klaus has extensive experience in quality systems auditing and is certified in quality engineering.
Minor project Report on DESIGN OF HYDRAULIC SHEET METAL PUNCHING MACHINE USIN...Shubham Dhaneshree
This document provides a minor project report on the design of a hydraulic sheet metal punching machine using hydro-mechanical leverage. The project was carried out by six students at Mahakal Institute of Technology and Science under the guidance of Professor Pankaj Gera. The project aims to integrate the mechanical advantages of leverage and hydraulics to facilitate easier operation of punching smaller metal parts and reduce reliance on heavy hydraulic machines. The report includes an introduction to punching machines and their components, a literature review on leverage and hydraulics, a design and analysis of the proposed machine, drawings of the machine parts, and expected results.
Applications of 3D printers in construction industry - Nithin NNithin N
3D printing, also known as additive manufacturing, is a process where 3D objects are created by laying down successive layers of material. There are various methods of 3D printing including stereolithography, selective laser sintering, and fused deposition modeling. The document discusses applications of 3D printing in construction industry such as printing entire buildings, houses, and interior elements layer by layer. Specifically, it describes a process called contour crafting that has printed walls using concrete and a company that has printed 10 houses in a single day using recycled materials. The future of 3D printing in construction may allow printing large structures through assembly of prefabricated parts.
This document summarizes a student project to design a high temperature and pressure naphtha piping system. It includes the project members, objectives to understand piping design concepts and flexibility, and perform stress analysis manually and using CAESER II software. The problem statement is to design a 6" diameter pipe connecting a centrifugal pump and pressure vessel operating at 300°C and 21.4kg/cm2. The document outlines the design methodology, calculations, material selection, and references used.
This document discusses powder bed fusion, which is an additive manufacturing technique where a laser, heat or electron beam is used to melt and fuse powdered material together to form a 3D object. It begins with an introduction to manufacturing and additive manufacturing. It then defines powder bed fusion and notes its classification and process. The key advantages are wide material choice, powder recycling, low cost and design complexity. Disadvantages include slow speed, high power usage and potential for thermal distortion. In conclusion, powder bed fusion allows for production of heat-resistant components while optimizing weight and reducing lead times.
This document discusses the manufacturing process of pistons. It is divided into two main sections on casting and forging pistons. In the casting process, aluminum ingots are melted and poured into molds to form the basic piston shape. Additional machining steps such as dehorning, hardening, CNC lathe machining and grinding are used to finalize the piston dimensions and features. The forging process starts with heating and pressing aluminum slugs to shape them. Further steps like drilling holes, milling surfaces and finishing grinding are used to complete forged pistons. Cast pistons are lighter and cheaper while forged pistons are more expensive but suitable for high speeds.
The 3D printing process builds a three-dimensional object from a computer-aided design model, usually by successively adding material layer by layer, which is why it is also called additive manufacturing,
Design by Analysis - A general guideline for pressure vesselAnalyzeForSafety
This presentation file is provided by Mr. Ghanbari and published under permission.
The presentation gives an introduction and general guideline for pressure vessel design by analysis.
The “design by analysis” procedures are intended to guard against eight possible pressure vessel failure modes by performing a detailed stress analysis of the vessel with the sufficient design factors. The failure modes are:
1.excessive elastic deformation, including elastic instability,
2.excessive plastic deformation,
3.brittle fracture,
4.stress rupture/creep deformation (inelastic),
5.plastic instability - incremental collapse,
6.high strain - low cycle fatigue,
7.stress corrosion, and
8.corrosion fatigue
Most of the “design by analysis” procedures that are given in ASME BPVC relate to designs based on “elastic analysis.”
The design-by-analysis requirements are organized based on protection against the failure modes listed below. The component shall be evaluated for each applicable failure mode. If multiple assessment procedures are provided for a failure mode, only one of these procedures must be satisfied to qualify the design of a component.
a)All pressure vessels within the scope of this Division, irrespective of size or pressure, shall be provided with protection against overpressure in accordance with the requirements of this Part.
b)Protection Against Plastic Collapse – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules.
c)Protection Against Local Failure – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules. It is not necessary to evaluate the local strain limit criterion if the component design is in accordance with Part 4 (i.e. component wall thickness and weld detail per paragraph 4.2).
d)Protection Against Collapse From Buckling – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules and the applied loads result in a compressive stress field.
e)Protection Against Failure From Cyclic Loading – these requirements apply to all components where the thickness and configuration of the component is established using design-by-analysis rules and the applied loads are cyclic. In addition, these requirements can also be used to qualify a component for cyclic loading where the thickness and size of the component are established using the design-by-rule requirements of Part 4.
This document describes an experiment to determine the shear force and bending moment of a beam using an apparatus. It includes the objective, apparatus description, related theory, procedure, sample calculations and results in tables and graphs. The conclusions are that there is a linear relationship between load and shear force/bending moment, and experimental results match theoretical values closely. Applications of shear force and bending moment diagrams in structural design are also discussed.
The document discusses structural design considerations for steel structures. It covers:
1. Factors that must be considered in arranging structural components, such as functional requirements, environmental factors, and soil conditions.
2. Advantages of steel structures such as smaller sections, homogeneity, and availability of pre-rolled sections.
3. Limit states design methodology and factors considered, such as load and material factors, compared to allowable stress design.
4. Common structural elements, sections, and connections used in steel structures.
Cooling load is the rate at which energy must be removed from a space to maintain the desired temperature and humidity levels. It is determined by internal and external heat gains such as solar radiation, thermal radiation, convection, lights, people, and equipment, which are all transient in nature. The HvacLoadExplorer software uses the heat balance method to calculate cooling and heating loads by modeling a building as a hierarchy of zones, rooms, and heat gain elements and accounting for conduction, radiation, and other heat transfer processes.
The document provides information about the design of machine elements course including:
1. The course is divided into 5 units covering topics such as stresses in machine members, design of shafts and couplings, fasteners and welded joints, springs and levers, and bearings and flywheels.
2. Unit II focuses on the design of shafts and couplings including designing solid and hollow shafts based on strength, rigidity and critical speed. The design of keys, keyways, rigid and flexible couplings, and knuckle joints is also covered.
3. References and standards for the design of plain bearings are provided. Sample problems related to stresses in machine members from previous examinations are given at the
This document discusses the calculation of wind loads for structural design. It provides background on wind loads and defines key terms. It outlines wind speed areas in Tanzania and the design procedure, which involves determining the site wind speed, characteristic wind pressure, external and internal pressures on the structure, and the net pressure. Examples are provided to demonstrate calculating wind loads. Load factors of safety and load combinations are also defined.
Pressure Coefficients on Building Facades for Building SimulationSimScale
While accurate wind pressure coefficients are critical to evaluating building design, most engineering software for energy and thermal analysis oversimplifies treatment of wind pressure, which can adversely impact cooling, ventilation, overheating, and fresh air rates assessments. This presentation shows how SimScale provides accurate calculations of wind pressures, quickly and cost-efficiently, to deliver a more comprehensive evaluation of building performance.
Watch the webinar recording here: https://www.youtube.com/watch?v=VU4-PN9PYDM
Hello Friends,
Please find Basics of Pipe stress analysis, this is in continuation to earlier posts (Walk through Piping & pipe Stress). If all read in conjunction, shall give you a very good OVERVIEW of pipe stress analysis.
Next will target individual equipment connected piping stress analysis methodology.
Okay, let's solve this step-by-step:
(a) Given: Length of rod L0 = 2 m
Temperature increase ΔT = 50°C
Coefficient of thermal expansion α = 20×10-6 /°C
Displacement of end B = L0×Δα×ΔT
= 2×20×10-6×50
= 0.002 m = 2 mm
(b) Average normal strain εavg = (Change in length) / Original length
= (Displacement of end B) / L0
= (2mm) / 2m
= 10-3
Therefore, the average normal strain in the rod is 1000 microstrains or 0
The document discusses the different types of loads that act on steel structures, including:
1. Vertical loads such as dead loads from structural elements and live loads from occupancy.
2. Horizontal loads like wind loads and earthquake loads.
It provides examples of how to calculate expected load values based on building use and location to ensure structures are designed to safely support the total load during their lifetime.
The document provides a cooling load calculation report for a warehouse building with two floors. It includes input data on the building specifications, outdoor and indoor design conditions, external and internal loads, and ventilation requirements. Calculations were performed using HAP software to determine the cooling loads on a space-by-space and system-by-system basis. The report summarizes the input data, output cooling loads, and compares the results to design values.
Design of Machine Elements 2 mark Question and Answersbaskaransece
This document provides information on the design of machine elements including shafts, keys, and couplings. It begins with definitions of key terms like factor of safety and design processes. It then discusses loads, stresses, materials selection factors. Specific topics covered include types of shafts and stresses on shafts, standard shaft sizes, hollow vs solid shafts, keys and keyways, couplings, and manufacturing methods for shafts.
Design of machine elements notes by Bhavesh Mhaskar BhaveshMhaskar
1. Machine design is the process of selecting materials, shapes, sizes, and arrangements of mechanical elements so that a machine will perform its prescribed task.
2. The document discusses machine design classification, factors in design such as stresses and materials, and failure theories.
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Loading Calculation - Pressure Vessel and Structural
1. LOADING
The what-why-how of understanding basic principle of
loading and “refreshing” basic concept of loads
Slides By:
Syed Amir Syed Omar (Sam)
2. LOADINGS: WHY CALCULATE?
The reason is practically simple, not to overcomplicate things, loadings is
considered to ensure that the material of construction when subjected to
the load does not fail, easy right?
Yes indeed, what to consider and check? For example the structural unit is
made of several material with different stress value at working temperature,
whether ambient, local, or controlled temperature, not to reached it’s yield
strength.
What does that mean? It means what ever loads is to be considered, the
designer/engineer needs to ensure the subjected/calculated load does not
exceed the material yield strength.
Example, you have a material with 200 MPa yield strength, then from the
highest calculated load value you have, let say, 200 kN (200,000 N) with the
subjected area of 20 sq-m, this means the subjected pressure on the load
bearing face is 10 kPa. This means the material/structural steel is capable of
withstanding the 200 kN force.
3. X
Y Y
Z
Two (2) loading to be calculated based
on plane reference:
Y-X plane
Y-Z plane
Larger area to be taken for calculation
LOADINGS: THE BODY
4. LOADINGS: WHAT TO CALCULATE?
Loading is any action or movement subjected to a body, hereinafter,
referred as FORCES & MOMENTS
FORCES MOMENT
Sudden force/impact acted
upon plane of a axial or
lateral plane
A point or reference line of
where the body is subjected
to a force
5. LOADINGS: HOW TO CALCULATE?
The basic fundamental of loading being force or moment are as per
following formula
Force, F (Newton, N) = Pressure, P (Pa/N-m-2) x Area, A (m2)
*depending on unit, the calculation may vary
Moment, M (Newton-meter, Nm) = Force, F(N) x Height/Distance (m)
*depending on unit, the calculation may vary
The positive & negative symbols also denotes that the forces and moment
are either subjected to compressive (pushing) or tensile (stretch). This is
determine from source of the load bearing faces
Tensile
Region
Compressive
Region
6. LOADINGS: TYPES OF LOADS
There are various types of loads than be considered during design stage.
The most basic loads are the weight of the unit itself, by default there would
be four (4) different loads:
• Empty Weight Load
• Complete unit assembly without any fluid
• Full Water Weight Load
• Complete unit assembly completely filled with water
• Hydrostatic Test Weight Load
• Complete unit assembly completely filled with water at test
pressure
• Operating Weight Load
• Complete unit assembly completely filled with operating fluid at
operating pressure
Is this all? Not exactly, certain project or client requirement, they would
request that manufacturer to calculated several other loads like
seismic/earthquake, wind, snow, fire blast, transportation, lifting, and etc.
7. LOADINGS: FORMULA
When it comes to which formula shall be used, it depends on the
contractual terms and technical agreement between manufacturer and
purchaser on which codes & standards or engineering practices to be used.
As covered in Slide No. 3 and 4, the most basic formula designer/engineer
can used to “roughly” estimate or calculate the loads is using the force and
moment formula with the provision of required data.
Some purchaser or operator, would require purchaser to refer or used
formula in certain codes, standards or standard practice to calculate this
loads as certain rules require the use of certain coefficient or some require
calculation based on certain condition e.g. normal, high, basic, worse etc.
8. LOADINGS: DIFFICULT?
How difficult? Well depends on the designer/engineer, nothing is made easy
in engineering because if it is, then everyone can simply become an
engineer…got what I’m saying?
“Practice makes perfect”, the ye ole favorite terms that shall be adapt by any
individual regardless or engineer, designer, doctor, technician, mechanics or
even a cashier.
It does not means you’re not an associate of engineering field then you
shouldn’t care about these loadings, sometimes a carpenter also require
this loadings when they plan to design a house, a barn, or any woodwork
masterpiece.
Sure, there are many software available but the most powerful software
and hardware is pen, paper and calculator