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October 4, 2024 at 10:17 am
davids0miller1
Subscriber

It sounds like you're on the right track trying to apply a PSD displacement at the free end of your cantilevered beam in ANSYS Workbench. Here are a few suggestions that might help you troubleshoot:

  1. Check Node Selection: Ensure you’re correctly identifying the free end node. You can verify the node number in the graphical interface or by checking the element connectivity.

  2. APDL Commands: When using APDL commands, ensure that you’re correctly referencing the node with the command N, followed by the node number, to apply the displacement. For example:

    apdl
    N, , 0, 0, 0 ! If needed to ensure proper selection D, , UY, PSD_displacement

  3. Inputting PSD Data: Make sure that the PSD data you’re trying to apply is formatted correctly. It’s often necessary to define a time history function that represents your PSD.

  4. Solver Settings: Double-check your analysis settings, as some settings might not support the displacement method you're trying to apply.

  5. Reference Documentation: Consult the ANSYS documentation or forums for specific commands and examples related to applying PSD displacements. The ANSYS user community is also a great resource for similar cases.

If you're still having trouble, consider sharing your APDL command snippet or any error messages you’re encountering for more targeted assistance!