2.3. Failure Criteria Plot

To evaluate and plot yield and ultimate failure criteria for short fiber composites, follow these steps in Ansys Mechanical:

  1. Click Scripting from the ribbon's Automation tab to show the Mechanical Scripting view.

  2. You will find the Python script at the end of these instructions (see Python Script). Copy and paste the script in the Mechanical Scripting Editor. Then click the Run Script button to execute it. The script automatically generates two Python Result objects, one for the yield failure and one for the ultimate failure.

  3. Click Evaluate All Results to compute and plot the failure criteria as shown in the figures below.

    Figure 2.3: Plot of the Hill yield failure criterion

    Plot of the Hill yield failure criterion

    Figure 2.4: Plot of the Tsai-Hill ultimate failure criterion

    Plot of the Tsai-Hill ultimate failure criterion