Day One
Background and Development of Section VIII Division 2
- Organization of VIII-2
- Overview Of VIII-2, Parts 1 through 9
Comparison: VIII-1 vs VIII-2 with a Focus on Cost
- ASME VIII-1 PLUS Construction, (It’s what most refinery & petrochemical companies do!)
- Comparison – ASME VIII-1 vs ASME VIII-2
- Comparison – tmin & The VIII-2 Class 2 Allowable Stress Bases
- Comparison – ASME VIII-1 vs ASME VIII-2 – Summary
References – ASME PTB-1 & PTB-2
Basic Concepts in Section VIII, Division 2, Part 5 - Design by Analysis
- Design-By-Analysis (DBA)
- The Force Method
- Stress Definitions
- Primary Stress & Limits
- VIII-2 Allowable Stress Basis
- Secondary Stress & Limits
- Peak Stress & Limits
- Stress Classification – The Hopper Diagram
- Stress Classification – Nozzles
- Stress Calculations for Code Compliance
Supplemental Information for VIII-2, Part 5 Design-By-Analysis Applicability
- Applicability
- Numerical Analysis
- Numerical Analysis & Material properties
- Material Properties
Protection Against Plastic Collapse
- Overview
- Elastic Stress Analysis Method
- Limit Load Analysis Method
- Elastic-Plastic (EP) Analysis Method
- Stress Measure for Multiaxial Stress States
- Elastic Stress Analysis Method – Example 1
- Limit Load Analysis Method – Example 1
- Elastic-Plastic (EP) Analysis Method – Example 1
- Comparison of Methods – Example 1
- Example 2
Protection Against Local Strain
- Overview
- Elastic Stress Analysis Method
- Elastic-Plastic (EP) Analysis Method
Day Two
Design for the Protection of Buckling
- The Lecture Covers
- What is Buckling?
- Bifurcation or Eigenvalue Analysis
- Buckling Analysis Options
- Type 1 Buckling Analysis
- Design Margin
- Effects of Imperfections On Buckling Loads
- Type 2 Buckling Analysis
- Type 3 Buckling Analysis
- Load Cases in Buckling Analysis
- Example
- References
Design for the Protection of Fatigue
- Definition
- Fatigue Basics
- VIII-2 Fatigue Analysis – Overview
- Fatigue Screening
- Fatigue Assessment Methods
- Fatigue Assessment Methods – Comparison
- Fatigue Assessment Methods – Examples
- Fatigue Assessment Methods – References
Development Of The ASME Smooth Bar Fatigue Curves
The Infamous Ke and Kv Factors
Day Three
Fundamentals of Ratcheting for Design by Analysis
- Ratcheting Definition
- Ratcheting Overview
- Ratcheting Assessment – Elastic Stress Analysis
- Ratcheting Assessment – Bree Diagram
- Ratcheting Assessment – Bree Diagram – Loading Conditions
- Ratcheting Assessment – Bree Diagram – Effect of Yield Stress
- Ratcheting Overview – Elastic-Plastic Stress Analysis
- Elastic-Plastic Modeling of Ratcheting Using FEA
- Cyclic Plasticity
- Ratcheting Summary
- References - Ratcheting
Summary of Section VIII Division 2 Code Case 2605
- Background of ASME VIII-2 Code Case 2605 (CC2605)
- Technical Background of CC2605
- Highlights of CC2605
- Modifications to CC2605
- Example Problem
What’s New in Fatigue – see API 579-1/ASME FFS-1, Part 14
Fatigue Analysis Using A Fracture Mechanics Approach
Material Toughness Requirements Using A Fracture Mechanics Approach
- Brittle Fracture Overview
- VIII-2 Toughness Rules
- Using Fracture Mechanics To Determine the MDMT
- Technical Basis Of VIII-2 Toughness Rules
- Summary