Fatigue of Welds in fe-safe. fe-safe 2017

Transcription

1 Fatigue of Welds in fe-safe fe-safe 2017

2 About this Course Course objectives Upon completion of this course you will be able to: Set up and run various weld fatigue analyses using fe-safe including Understand modeling requirements for line welds and spot welds Understand the background of the supported weld fatigue methods Set up FEA models for weld fatigue and import results into fe-safe Use BS5400 Weld Finite Life algorithm in fe-safe Define weld lines for structural stress calculations Use the Verity module in fe-safe based on structural stress calculations Select a material for fatigue analysis using structural stress methods Run weld methods and/or base metal fatigue simultaneously Postprocess weld fatigue in fe-safe and using a viewer Targeted audience Simulation Analysts Prerequisites Introduction to fe-safe 1 day

3 Day 1 Lesson 1 Demo 1 Lesson 2 Workshop 1 Lesson 3 Workshop 2 Lesson 4 Workshop 3 Lesson 5 Workshop 4 Lesson 6 Overview of Weld Fatigue A Comparison of Welded Joint Fatigue Methods in fe-safe Using BS5400 in fe-safe Excavator weld fatigue simulation with BS5400 Structural Stress for Weld Fatigue in fe-safe Excavator weld fatigue simulation with Verity Modeling for Structural Stress Methods (General/Shells) Verity weld definition using the shell weld finder Modeling for Structural Stress Methods with Solid Elements Weld definitions for solid meshes Spot Weld Fatigue in fe-safe (Optional)

4 Additional Material Appendix 1 References

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10 Revision Status Lesson 1 12/16 New for fe-safe 2017 Lesson 2 12/16 New for fe-safe 2017 Lesson 3 12/16 New for fe-safe 2017 Lesson 4 12/16 New for fe-safe 2017 Lesson 5 12/16 New for fe-safe 2017 Lesson 6 12/16 New for fe-safe 2017 Demonstration 1 12/16 New for fe-safe 2017 Workshop 1 12/16 New for fe-safe 2017 Workshop 2 12/16 New for fe-safe 2017 Workshop 3 12/16 New for fe-safe 2017 Workshop 4 12/16 New for fe-safe 2017

11 Lesson 1: Overview of Weld Fatigue L1.1 Lesson content: General Features of Welded Joints Applicability of Analysis for Welds Comparison to Base Material Fatigue Weld Analysis Methods in fe-safe Classification Methods for Fatigue of Welds Structural Stress Methods for Fatigue of Welds Summary Demonstration 1 45 minutes

12 Lesson 2: Using BS5400 in fe-safe L2.1 Lesson content: BS5400 Weld Finite Life Analysis Process in fe-safe Workflows for BS5400 Weld Finite Life in fe-safe Using BS5400 Weld Finite Life in fe-safe Comparison to the Standard 20 min

13 Workshop 1: Excavator weld fatigue simulation with BS5400 W1.1 In this workshop, the durability simulation of a welded structure is started Upon completion of this workshop you will be able to: 1. Configure fatigue loading for a single dig cycle 2. Configure fe-safe for British Standard 5400 weld fatigue methods using conservative assumptions 3. Apply the same materials to the whole model and run fe-safe 4. Use postprocessing to find the areas of interest 5. Identify welds of interest for later analysis using Verity 30 minutes

14 Lesson 3: Structural Stress for Weld Fatigue in fe-safe L3.1 Lesson content: Supported FEA Solutions for Structural Stress Structural Stress-Based Analysis Process in fe-safe Weld Definitions Automatic Weld Finder Legacy Line Weld Definition Structural Stress Output Options Using Weld Groups with Group Parameters 45 minutes

15 Workshop 2: Excavator weld fatigue simulation with Verity W2.1 In this workshop, the durability simulation of a welded structure is continued Upon completion of this workshop you will be able to: 1. Continue analysis using an existing project 2. Define welds of interest using legacy line weld definition and calculate structural stresses 3. Configure fe-safe to only analyze the elements at the selected welds 4. Calculate fatigue live at the critical welds using the structural stress method in fe-safe 5. Use postprocessing to compare results from each method 30 minutes

16 Lesson 4: Modeling for Structural Stress Methods (General/Shells) L4.1 Lesson content: General Modeling Goals for Weld Lines Weld Domain vs. Definition Modeling for Legacy vs Automatic Weld Finder Why Mesh Shell Models for Welds Meshing Requirements for Shells Meshing Requirements for the Shell Weld Finder Meshing Guidelines for Shells 20 minutes

17 Workshop 3: Verity weld definition using the shell weld finder W3.1 In this workshop, the durability simulation of a welded structure modeled with shell elements and using the automatic weld finder is explored in detail Upon completion of this workshop you will be able to: 1. Find weld domains using one weld definition in the automatic weld finder 2. Understand the groups generated using extensive diagnostics 3. Review the fatigue life 30 minutes

18 Lesson 5: Modeling for Structural Stress Methods with Solid Elements L5.1 Lesson content: Why Mesh Solid Models for Welds Requirements for Meshing Solid Welds for Verity Automatic Weld Finder for Solids Output Options for Solid Weld Definitions Legacy Line Weld Definitions for Solid Hexa Meshes Modeling and Definition Issues for Solid Hexa Meshes Legacy Line Weld Definitions for Solid Tetra Meshes Modeling and Definition Issues for Solid Tetra Meshes 30 minutes

19 Workshop 4: Weld definitions for solid meshes W4.1 In this workshop, the durability simulation of a welded structure modeled with solid Hexa and Tetra elements, and using the legacy line weld definition and automatic weld finder is explored in detail Upon completion of this workshop you will be able to: 1. Find the weld toe domains using the three types of solid weld definition a. Legacy solid weld b. Legacy tetra weld c. Automatic weld finder 2. Understand the extensive diagnostics 3. Review the fatigue life 30 minutes

20 Lesson 6: Spot Weld Fatigue in fe-safe L6.1 Lesson content: Overview of Spot Weld Fatigue in fe-safe Simplified Spot Weld Modeling Approach Simplified Spot Weld Modeling Details Using the Spot Weld Finder Spot Weld Example 20 minutes

21 Appendix 1: References A1.1 Appendix content: References 10 Minutes