Setting parameters and starting the computation of stress

Prerequisites

Temperature has been computed.

  1. Select File > Open.

  2. Open the file Stress.crys.

  3. Select Settings > Materials.

    The Materials dialog opens.

  4. Select the material GaAsSolid from the materials list.

    The properties of GaAsSolid are displayed in the right field of the dialog window.

  5. Scroll down until mechanical properties are displayed.

    Mechanical properties 

    Figure 72. Mechanical properties

  6. Specify the growth direction of the crystal, enter the appropriate values for the thermal expansion coefficient and the Cartesian stress coefficients C11, C12, C44, if not already specified. The averaged elastic constants will be calculated depending on the growth direction. The growth direction is by default isotrop. In this case the anisotropy of the material will not be take into account.

  7. Select the region of the sample in the drawing with the left mouse button.

  8. Select Settings > Physical Phenomena.

  9. Because temperature has already been computed and the fluid properties for Phase 1 have been specified for the material of the sample, CrysMAS offers to compute Thermoelastic Stress, Convection and Azimuthal Flow.

    Activate Thermoelastic Stress ( Yes ) and deactivate Convection and Azimuthal Flow ( No ), if necessary.

  10. Click on Apply and Close.

  11. Select the Thermoelastic Stress from the variable group list box in the tool bar.

    The default variable for visualizing results is vonMisesStress.

  12. Click on the Start computation button  .

    After computation is finished, you can visualize the von Mises stress, for instance.

    Von Mises Stress 

    Figure 73. Von Mises Stress

Related Procedures

Modifying Materials Properties

Physical Phenomena

Related Dialogs

Materials

Physical Phenomena