Chandra Sekaran
Ansys Employee
Because you have nonlinearities you will have to resort to full transient analysis. You can fix the base nodes and apply the acceleration loads to the entire body. This will give you the relative displacements with respect to the fixed base and the resulting stresses etc. On the other hand if you need to include the base motion then you may have to use a large mass approach where you have a very large mass coupled to all the base nodes. Then you apply a force on the large mass (F= M A) that will generate the required base acceleration. n
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