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Please help!!!!

Sorry for this post but I've written a few post here without getting any answers. Since most posts get reply I just want to make sure I'm doing everything ok publish my post. Thanks!

I have a simple Flat plate (shell) where I apply a ponctual force in the middle and analyze with Frequency and Direct Steady State Dynamic Analysis. When I apply Structural Damping, there seems to be problem with the results of some resonant mode (not all). Some mode seems to disapear. I look at...

Hi, I'm using piezoelectric material in ABAQUS, and I would like to have some actuators activated with 0 dephasing and some with 180 degrees (so they go in opposite direction at any given time). I know how to impose the initial condition and to apply the voltage magnitude but not how to dephase...

Also, I use 400 V as Magnitude BC condition, and I tried -400 V and obtained different results from when I use 400 V... what's the signification?

Hi, I'm using piezoelectric material in ABAQUS, and I would like to have some pieces activated with 0 dephasing and some with 180 degrees (so they go in opposite direction at any given time). I know how to impose the initial condition and to apply the voltage magnitude but not how to dephase...