Durability

Define an S-N curve for isotropic materials

To specify a user-defined S-N curve as the fatigue life criterion for computing durability results, do the following steps:

Define the S-N curve for the material.
Define the stress life criterion.
Use the fatigue durability object in your static or transient event and solve the durability event.

In the Isotropic Material dialog box, on the Durability page, in the Fatigue Strength group, from the Stress-Life Data list, select Field.
From the Specify Field list, select one of the following:To use an existing field that defines the S-N curve, select Select Existing Field from List and choose the existing S-N field.To create the S-N curve from a mathematical formula, select Formula Constructor and construct the formula for the S-N curve.To create the S-N curve as a table function, select Table Constructor and enter the values for the (N,S) pairs.
Click OK.

Create a fatigue durability object with a stress life criterion defined.

In the Fatigue dialog box, from the Fatigue Life Criterion list, select Stress Life.
Specify all other fatigue settings that apply to your model.
Click OK.

Simcenter 3D Durability

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Analyzing strain gage rosette data

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Define an S-N curve for isotropic materials, Simcenter 3D 2021.1 Series

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