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Thethinker wrote: ↑Wed Jun 01, 2022 9:40 pm You have to adjust vertical DOF at the top of the pier, that will help you.FMWhatsapp APK

Okay, will try and thank you! As I am learning OpenSees, could you please advise me on the command that can restrain the vertical DOF? Thanks again!

Bests,
Eason

Did you restrain the vertical DOF at the top of the pier? It could be the neutral axis of the section moving away from the geometric center, leading to apparent axial forces. Dear Dr. Scott, Thank you so much for your reply. By the way, I am a fan of you and following your blog at "https://por...

In order to increase the accuracy of evaluating seismic response of structures, it is critical to conduct dynamic analyses based upon precise nonlinear models being as consistent as possible with the real conditions of corresponding structures. The concentrated plasticity model including one elasti...

Hi, guys. Hope everyone is doing well. When I conduct a nonlinear time history analysis on a single pier model (20m), I notice the axial force at the bottom section is not constant during the whole process. Even worse, at some increments/times, the axial force increases/decreases dramatically. Since...

I have the same question.