Non-local and surface effects

Many factors can influence the fatigue life for a given component. Basic fatigue life data is usually obtained from tensile or rotating bending tests of polished laboratory specimens. The surface roughness, size, type of loading, and mean stress level can all influence the fatigue life behavior of components as compared to laboratory specimens.

For more details on the factors influencing the fatigue life behavior, please refer to the following topics:

The fatigue notch factor

Examples for size effects

Stress gradients

Theoretical concepts

Application of the theory

Macroscopic yielding

Neuber's approach to micro-yielding

Summary for size effects

Surface effects

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The fatigue notch factor

Examples for size effects

Stress gradients

Theoretical concepts

Application of the theory

Macroscopic yielding

Neuber's approach to micro-yielding

Summary for size effects

Surface effects

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Non-local and surface effects, Simcenter 3D 2021.1 Series

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