Fatigue Scanning
231.1

Supported Ansys versions:

2020 R1,
2020 R2,
2021 R1,
2021 R2,
2022 R2

Required Product:

Mechanical

Postprocessing tool for evaluating maximum stress or strain range from a selected range of solution steps or a solution combination.

Download

App Description

With the Fatigue Scanning app, select the geometry of interest (typically a number of faces of a body) and let the app run all possible load case combinations from the selected steps.

Key Benefits

The result is the highest stress or strain range from the selected range in the time history. The results for the nodes and the critical load steps are written to a CSV file in the solution folder and can be used for fatigue analysis.

Use Cases

In multi-step analysis with non-proportional loading (due to transient thermal body loads for example), it is difficult to identify all possible hot spots from a fatigue point of view.

A stress envelope “Maximum Over Time” is not enough because the stress orientation might shift between steps.
While a manual “Solution Combination” between two load cases could be used to plot the stress range, if there are more than three or four load steps, the number of possible load step combinations quickly becomes too large. You should use the Fatigue Scanning app instead.