5.15.10.1. Overall Workflow for Mechatronics Analysis

  1. Create a modal analysis system.

  2. Define the inputs using Remote Points and/or Named Selections. The names of the entities created must include the prefix input_ and the degree of freedom in the trailing suffix, signified by an underbar (e.g. "input_MyName_ux").

    Note:  The Named Selection can only be scoped to a vertex.

  3. Define the outputs using Named Selection. The names of the entities created must include the prefix output_ and the degree of freedom in the suffix (e.g. "output_MyName2_rotx").

    Note:  The Named Selection can only be scoped to a vertex.

  4. Specify the modal damping in a Commands Object under an Environment, for example:

    dmprat,.02          ! 2% damping on all modes
mdamp,1,.05         ! 5% damping on mode 1

  5. At Solution level, add a Commands Object and import the macro ExportStateSpaceMatrices.mac to export the reduced model. It is located at the installation folder under: ANSYS Inc\v242\aisol\DesignSpace\DSPages\macros

    Note:  The macro is based on the Mechanical APDL command SPMWRITE.

  6. Solve the Modal Analysis.

  7. The reduced model file (file.spm) and the graphics file (file_spm.png) will exist in the solver files directory and can then be imported into Twin Builder. (See Saving and Managing Project Files in Workbench User's Guide for more information on solver files directories.)