19.5.10. Stress Tools

You can insert any of the following stress tools in a Solution object by choosing Stress Tool in the Toolbox drop-down menu of the Solution Context Tab or by right-clicking on the Solution object and selecting Insert > Stress Tool:

Important:  Currently, the application places a limit on the maximum value of a Safety Factor result at 15 and the Safety Margin result at 14. As needed, you can create a User Defined Result to exceed these maximum values.

Note:  After adding a Stress Tool object, you can change the specific stress tool using the Theory property.

The Stress Tools make use of the following material properties:

  • Tensile Yield Strength

  • Compressive Yield Strength

  • Tensile Ultimate Strength

  • Compressive Ultimate Strength

Safety Tools in the Ansys Workbench Product

The Ansys Workbench product uses safety tools that are based on four different stress quantities:

  1. Equivalent stress (σe).

  2. Maximum tensile stress (σ1).

  3. Maximum shear stress (τMAX)

    This uses Mohr's circle:

    where:
    σ1 and σ3 = principal stresses.

  4. Mohr-Coulomb stress

    This theory uses a stress limit based on

    where: