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Random vibration analysis using Optistruct




I am learning the Optistruct solve and Hyperstudy. I am doing the simple Plate test case study for Random vibration analysis using Optistruct solver.

Already I have benchmark in ANSYS and I want to compare with Altair. 


Attached the images.


Could you share the random vibration analysis procedure ?



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Random response analysis is a transfer function of FRF and is a mode based procedure.


You need to have these load collectors like RLOAD2, DAREA, FREQi etc as inputs for FRF analysis.


I presume ANSYS applies a unit load by default for FRF and then uses it as transfer function to RRA




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