How to perform the base excitation random vibration analysis ( using input PSD) of beam and portal frame?
Posted Jun 19, 2021, 3:31 PM EDT Structural Mechanics & Thermal Stresses Version 5.6 2 Replies
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Hello everyone, since i am new to the comsol multiphysics software and i want to perform the random vibration analysis ( using base excitation PSD) of beam ( cantilever and simply supported) , clamped rectangular plate and portal frame problems. I am able to perform the modal analysis of all the problems. Also, for random vibration part, i have given the input PSD in the interpolation function part of the global definition. But after that i don't know what are the steps that i have to followi.e what are the inputs given in global reduce model inputs and at finally obtained the response PSD in the desired direction and location. Can anyone help me in this mattter? Thanks in advance.