Fatigue Analysis and FEA

By: Johannes Homan
In-Company

Fatigue Analysis and FEA

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About the course

Did you know that the number of structural failures due to fatigue is much larger than due to static overload? Managing and preventing problems due to metal fatigue should be considered a key capability of a structural engineer. Safe operation of your structural asset is important to you; you want to avoid your structure collapsing.

This course fills the gap between textbook theory and fatigue calculations with design codes; teaching participants the fundamentals required to perform a technically sound fatigue analysis. Through knowing these fundamentals of fatigue, participants will be able to identify which factors are good and bad for fatigue, how to improve a design and how to calculate the fatigue life of a structure. In this course participants will learn about both analytical analysis for fatigue and how to use FEA (Finite Element Analysis) for a fatigue analysis.

The course consists of 5 online live sessions with the instructors. All training content is provided through your EngineeringTrainer account.

In-Company
15hr Content
15 PDH Credit
English
INCO1001

Meet your instructor

Instructor

Johannes Homan

Fatigue Expert, Material Developer

Fatigue & Damage Tolerance Specialist and Trainer

Learning Outcomes

After this course, you...
• have a solid fundamental understanding of the mechanism of fatigue, and know how to interpret fatigue calculation codes,
• know how to identify fatigue critical locations, and are familiar with the analysis methods (both analytical and FEA) so as to be able to predict component life,
• understand how fatigue behaviour is impacted by the mean stress, the surface condition, surface treatment and corrosion,
• have seen the concepts for damage accumulation and combined fatigue loading,
• have a solid overview of how to use FEM optimally for fatigue design studies and fatigue life analysis,
• have seen the importance of selecting appropriate elements and performing an appropriate convergence study.

Who should attend this course

Those involved in structural design or reviewing designs:
• Stress engineers
• Structural designers
• Test engineers
• Lead engineers
• Engineering managers

Prerequisites

An understanding of loads and stresses
Basic understanding of material behaviour

Program & Details

Introduction Live

1. What is fatigue?
2. Why is fatigue important?
3. Fatigue mechanisms & phenomena
Fatigue of Materials Live

1. Effect of material properties
2. Impact of mean stresses and type of loading
Fatigue of Structures Live

1. Stress concentrations
2. Notch sensitivity
3. Residual/internal stresses
4. Fatigue properties of structures
5. Surface conditions
6. Environmental factors
7. Identification of critical locations
8. Exercises
Variable Amplitude Loading Live

1. Load and stress spectra
2. Cycle counting
3. Damage accumulation
Fatigue Analysis using Nominal Stresses Live

1. Accuracy of the approach
2. Material data
3. Accounting for geometry
4. Mean stress correction
5. Examples
Fatigue Analysis using Local Stresses Live

1. Material data
2. Accounting for the geometrical features
3. Impact of stress gradients
4. Examples
FEA Part I Live

1. Meshing for a fatigue analysis
2. Element types, and impact on stress levels
3. Dealing with singularities
FEA Part 2 Live

1. Non-linear analysis
2. Post processing of results
3. Verification
Welded joints Live

1. Difference between fatigue in welded and non-welded structures
2. Analysis of a welded joint
3. FEA analysis of a welded joint
4. Example
Multi-axial fatigue Live

1. Multi-axial loading
2. Multi-axial stresses
3. Principal vs equivalent stresses