Transient Modal Dynamic with Displacement Base Motion - Optistruct

Jeganathan
Jeganathan Altair Community Member

Hi,

I'm simulating a sample model for modal transient dynamic analysis with displacement history as base motion. But the behavior seems like, the effect of gravity is not considered into the simulation. At any given instant of time, only the geometrical stiffness of structure plays the role but not the mass effect.

How to include the mass effect into the transient analysis with displacement base motion?

I have attached the .fem file for reference.

Thanks.

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