“Analysis and design methods for pressure vessels based on codes and their engineering applications
Thread Content
To all enterprises and institutions: ASME standards explicitly require the use of ANSYS for the calculation and verification of pressure vessels. Ansys Workbench boasts powerful modeling and simulation analysis capabilities, and it is simple to operate and easy to master. In order to help analysts better master the design and calculation techniques for pressure-bearing equipment (such as pressure vessels and pipelines), and to understand the calculation principles and operational skills related to such equipment in Ansys Workbench, Hebei **Hongxin Huanyu Information Technology Co., Ltd. has organized a specialized training session titled \"Analysis and Design Methods for Pressure Vessels Based on Standards and Their Engineering Applications\". This course is based on the Ansys Workbench platform, adhering to ASME standards and the JB-4732 code for pressure vessel design. It also takes into account GB-150, as well as the design standards for chemical industry pressure vessels in the European Union and China. Through numerous theoretical explanations and engineering examples, it enables learners to master the use of Ansys Workbench in a relatively short period of time ； Master the calculation principles and techniques in Ansys Workbench for the strength, fatigue, fracture, thermal stress, and high-temperature creep of pressure vessels and pipelines; understand the dynamic structural responses of such vessels and pipelines, as well as the principles and calculation techniques for optimization design and reliability analysis. This topic can provide effective, reliable, and comprehensive numerical solutions and technical support for the computational simulation of pressure vessels and pipelines. This section is the first half of \"Analysis, Design Methods, and Engineering Applications of Pressure Vessels in Ansys Workbench Based on Standards\", focusing on the strength assessment of pressure vessels and pipelines, nonlinear and buckling analysis, sealing design, as well as modal and dynamic response calculations. Time and Location: May 12–14, 2023, Hangzhou/Simultaneous live streaming (Course materials will be distributed on the 11th; classes will take place from the 12th to the 14th). Simultaneous teaching videos can be viewed online for free after the classes. Instructor: The lecturer for this course is an associate professor with a doctorate in engineering mechanics from Harbin Institute of Technology; he has 17 years of experience in simulation analysis ； Possesses a solid foundation in engineering mechanics, solid mechanics, and fluid mechanics; proficient in engineering simulation software such as Ansys, FLUENT, CFX, and XFLOW; able to conduct structural analysis using ABAQUS and Marc ； Proficient in the Fortran language, with experience in developing large-scale programs using Fortran ； Familiar with C/C++ languages, with successful experience in developing programs in these languages. It is possible to use Fortran, C/C++ languages, and MATLAB to carry out extended development of existing large-scale commercial software (Ansys, FLUENT, Marc, CFX, etc.). Proficient in MATLAB, capable of independently carrying out simple engineering visualization tasks using MATLAB; skilled in the combined simulation techniques of finite element software such as Ansys with MATLAB’s numerical analysis tools. More than 20 academic papers have been published, of which 13 are indexed in SCI and EI, and 2 invention patents have been applied for. Over 80 training sessions were held, with thousands of participants. Fee structure: Category A: 4,680 yuan per person, including training fees, material costs, video fees, etc. Accommodation can be arranged collectively, at the participant’s own expense. Category B: Trainees can choose to apply for the Professional Competency Level Certificate for \"Senior CAE Simulation Engineer\" on the basis of Category A ； The cost is 1,600 yuan per person. This certificate can serve as proof of professional competence for positions in this industry, and it is also an important basis for job recruitment, appointment, grading, and promotion. The certificate is valid nationwide, can be verified online, and requires no annual inspection. Course Outline / Main Contents of Each ModuleI. Fundamentals of Pressure Vessel Design
1. Overview
2. Classification of pressure vessels
3. Failure modes of pressure vessels
4. Design criteria for pressure vessels
5. Design methods for pressure vessels
6. Design codes for pressure vessels
7. Selection of design methods
8. Basic design elements
9. Pressure testing
10. Strength theories
II. Basic Principles of the Finite Element Method and Detailed Operations in Ansys Workbench
1. Introduction to finite elements
2. Basic principles of structural finite element analysis
3. Introduction to ANSYS functions
4. Modeling in ANSYS WB
5. Definition of material parameters in ANSYS WB
6. Meshing techniques in ANSYS WB
7. Loads and constraints in ANSYS WB
8. Post-processing techniques in ANSYS WB
9. Estimation of calculation errors
10. Evaluation criteria for mesh independence
11. Adaptive solution techniques
Engineering Example-1: Plane modeling example
Engineering Example-2: Solid modeling example
Engineering Example-3: Creation of imprinted surfaces
Engineering Example-4: Generation of a refined mesh for the nozzle attachment area of a pressure vessel
Engineering Example-5: Stress analysis of the joint between the cylinder and head of a high-pressure vessel using adaptive meshing technology
III. Methods for Creating Material Models for Pressure Vessels in ANSYS Workbench
1. Constitutive theories of materials
2. Linear elastic material models
3. Elasto-plastic material models
4. Rubber material models
5. Gasket material models
6. Creep material models
7. Ratcheting material models
8. Fatigue material models
9. Fracture material models
Engineering Example-1: Definition and modification of material model parameters
Engineering Example-2: Invoking material models from the material library
Engineering Example-3: Creation of new material models
IV. Commonly Used Elements in Pressure Vessels and Element Enhancement Techniques
1. Overview
2. Line elements (bar and beam elements)
3. Plane elements
4. Shell elements
5. Solid elements
6. Relationship between computational accuracy and element types
7. Criteria for determining computational accuracy
8. Principles for selecting element types in pressure vessel calculations
9. Element locking and element enhancement techniques
10. Shear locking of elements and methods to eliminate it
11. Volume locking of elements and methods to eliminate it
12. Stress singularities and methods to eliminate them
Engineering Example-1: Stress calculation for the nozzle attachment area of a pressure vessel
V. Nonlinear Finite Element Techniques for Pressure Vessel Analysis
1. Overview of structural nonlinearity
2. Material nonlinearity
3. Geometric nonlinearity
4. Basic principles for solving nonlinear control equations
5. Load steps/substeps/equilibrium iteration steps
6. Convergence criteria
7. Tips for setting up nonlinear calculations in ANSYS Workbench
Engineering Example-1: Limit analysis of the joint between the cylinder and nozzle of a pressure vessel
Engineering Example-2: Elasto-plastic analysis of the joint between the cylinder and nozzle of a pressure vessel
VI. Elastic Stress Analysis Methods for Pressure Vessels
1. Overview of design methods to prevent plastic collapse
2. Basic terminology
3. Classification of stresses in pressure vessels
4. Stress analysis methods based on ASME codes
5. Stress analysis methods based on JB4732 standards
6. Methods for selecting stress linearization paths
7. Stress linearization method – stress integration method
8. Stress linearization method – structural stress method based on nodal forces
9. Stress linearization method – structural stress method based on stress integration
10. Stress linearization methods in ANSYS WB
11. Design and evaluation of pressure vessels against plastic collapse per ASME/JB4732
12. Design and evaluation of pressure vessels against local failure per ASME/JB4732
Engineering Example (Plane Elements)-1: Stress classification analysis and overall collapse evaluation for the joint between the cylinder and head of a high-pressure vessel
Engineering Example (Solid Elements)-2: Local stress classification analysis and overall collapse evaluation for the nozzle attachment area of a pressure vessel
Engineering Example (Solid Elements)-3: Local stress classification analysis and local failure evaluation for the nozzle attachment area of a pressure vessel
Engineering Example (Comparison between Shell and Solid Elements)-4: Stress classification analysis and overall collapse evaluation for nozzles of a high-pressure vessel under internal pressure
Engineering Example-5: Structural stress analysis and strength evaluation of quick-opening blind flanges on pressure vessels under high pressure
VII. Limit Load Analysis Methods for Pressure Vessels
1. Overview of limit load methods
2. Constitutive models of materials used in limit load analysis
3. Differences between limit load methods and elasto-plastic stress analysis methods
4. Load cases and load factors for limit load analysis per ASME/JB4732
5. Limit load analysis methods per ASME/JB4732
6. Criteria for determining limit loads per ASME/JB4732
7. Evaluation criteria for plastic collapse of pressure vessels per ASME/JB4732
8. ASME provisions regarding limit load analysis
9. JB4732 provisions regarding limit load analysis
10. Implementation of ASME limit load analysis methods in ANSYS
11. Implementation of JB4732 limit load analysis methods in ANSYS
Engineering Example-1: Limit load analysis and overall collapse evaluation for the joint between the cylinder and nozzle of a pressure vessel using solid elements
Engineering Example-2: Limit load analysis and overall collapse evaluation for vertical pressure vessels using shell elements
VIII. Elasto-Plastic Stress Analysis Methods for Pressure Vessels
1. Overview
2. Constitutive models of materials used in elasto-plastic analysis
3. ASME calculation methods for constitutive models of materials
4. Load cases and load factors for elasto-plastic analysis per ASME/JB4732
5. Elasto-plastic stress analysis methods for pressure vessels per ASME/JB4732
6. Criteria for determining design loads in elasto-plastic stress analysis per ASME/JB4732
7. Elasto-plastic methods for evaluating plastic collapse of pressure vessels per ASME/JB4732
8. Elasto-plastic methods for evaluating local failure of pressure vessels per ASME/JB4732
9. Implementation of ASME elasto-plastic stress analysis methods in ANSYS
10. Implementation of JB4732 elasto-plastic stress analysis methods in ANSYS
Engineering Example-1: Elasto-plastic analysis and overall collapse evaluation for the joint between the cylinder and nozzle of a pressure vessel
Engineering Example-2: Elasto-plastic analysis and local failure evaluation for the joint between the cylinder and nozzle of a pressure vessel
IX. Linear and Nonlinear Buckling Analysis of Pressure Vessels
1. Introduction to buckling analysis of pressure vessels
2. Stability at bifurcation points and extreme points
3. ANSYS Workbench modules for calculating stability at bifurcation points and extreme points
4. Calculation theory for bifurcation point stability (eigenvalue buckling)
5. Tips for setting up calculations related to bifurcation point stability (eigenvalue buckling) in ANSYS WB
6. Calculation principles for extreme point stability (nonlinear buckling)
7. ANSYS WB setup and operational tips for extreme point stability (nonlinear buckling)
7.1 Load application methods
7.2 Displacement application methods
7.3 Arc-length method
7.4 Techniques for enhancing algorithm stability
7.5 Extraction of load-displacement curves and evaluation of calculation accuracy
7.6 Summary of nonlinear buckling techniques
8. Methods for determining global and local instability of pressure vessels
9. Methods for applying initial imperfections
10. ASME methods for analyzing buckling and collapse prevention
11. Methods for evaluating buckling of pressure vessels based on ASME codes/JB4732 standards
Engineering Example-1: Linear/nonlinear buckling calculations and buckling collapse evaluation for the shell of externally pressurized cylindrical pressure vessels
Engineering Example-2: Calculation of local buckling instability and buckling collapse evaluation at the supports of vertical pressure tanks
X. Contact Analysis in Pressure Vessels
1. Overview
2. Contact surfaces and target surfaces
3. Modes of contact interaction
4. Contact algorithms
5. Symmetric and asymmetric contact
6. Trimmed contact
7. Contact detection
8. Penetration tolerance and elastic slip tolerance
9. Types of constraints
10. Contact stiffness
11. Time step control
12. Spherical domains
13. Treatment of contact interfaces
14. Geometric correction of contact and target surfaces
15. Adjustment of initial contact states
16. Evaluation of post-calculation contact states
17. Summary of key contact settings
Engineering Example-1: Structural stress analysis and strength evaluation of quick-opening blind flanges on pressure vessels under high pressure
XI. Seal Analysis for Pressure Vessels
1. Flange gasket sealing for medium- and low-pressure vessels
2. High-pressure sealing
3. Gasket material models – Gasket model
4. Meshing methods and techniques for gasket geometric models
5. Evaluation of sealing effectiveness based on ASEM codes
6. Evaluation of sealing effectiveness based on GB150
7. Evaluation of sealing effectiveness based on EU EN13445-3 standards
Engineering Example-1: Analysis and evaluation of gasket sealing effectiveness for flange-connected pressure vessels
Engineering Example-2: Simulation of rubber sealing processes for pressure vessels and evaluation of sealing effectiveness
XII. Modal Analysis of Pressure Vessels
1. Introduction to modal analysis
2. Theoretical basis for modal calculations
3. Natural frequencies and mode shapes
4. Participation coefficients, effective mass
5. Methods for extracting modes
6. Contact settings in modal calculations
7. Settings for modal calculations
8. Modal analysis methods for stressed structures
9. Nonlinear modes and their solution methods (linear perturbation method)
10. Wet mode theory and its solution methods
Engineering Example-1: Modal analysis of vertical pressure vessels filled with liquid
XIII. Seismic and Wind-Induced Vibration Analysis of Large Pressure Vessels and Equipment Seismic Resistance Analysis
1. Overview of calculation methods for dynamic response of pressure vessels
2. Modal analysis of pressure vessels
3. Calculation of dynamic response of pressure vessels based on response spectrum methods
4. Calculation of dynamic response of pressure vessels based on transient dynamics methods
5. Allowable stress limits for seismic resistance checks of equipment
6. Provisions regarding seismic analysis in ASEM/JB4732/GB50761, etc.
7. Impact resistance design methods for nuclear power pressure vessels
Engineering Example-1: Seismic response analysis of vertical pressure vessels
Engineering Example-2: Wind-induced vibration response analysis of vertical pressure vessels
Engineering Example-3: Impact resistance calculations for pressure vessels in offshore floating nuclear power plants
Engineering Example-4: Numerical simulation of pressure vessels subjected to impacts by high-speed flying objects