How to simulate seismic conditions with non-uniform excitation in Opensees？

[cexuhan]

Hi All,

According to my knowledge, the uniform excitation can be achieved in Opensees by calling the "UniformExcitation" sentence. But if I wanna simulate the earthquake cases with non-uniform excitation, that is, considering that the ground motion excitation of the earthquake at different bearing positions is different, is there any feasible way to simulate it in Opensees?

Thanks a lot for any possible help.

Xu

[mhscott]

Yes, search online for OpenSees multiple support excitation.

[cexuhan]

Yes, search online for OpenSees multiple support excitation.

Thanks for your reply. Best wishes.

[sonshitsu]

Hi All,

According to my knowledge, the uniform excitation can be achieved in Opensees by calling the "UniformExcitation" sentence. But if I wanna simulate the earthquake cases with non-uniform excitation, that is, considering that the ground motion excitation of the earthquake at different bearing positions is different, is there any feasible way to simulate it in Opensees?

Thanks a lot for any possible help.

Xu

Thank you.

[ColtonAxel]

Hi All,

According to my knowledge, the uniform excitation can be achieved in Opensees by calling the "UniformExcitation" sentence. But if I wanna simulate the earthquake cases with non-uniform excitation, that is, considering that the ground motion excitation of the earthquake at different bearing positions is different, is there any feasible way to simulate it in Opensees?

Thanks me on https://knifeplatoon.com for any possible help.

Xu

To simulate seismic conditions with non-uniform excitation in OpenSees, you can follow these steps:

Define a time series that represents the non-uniform excitation.
Apply the time series to the desired nodes or elements in the model using the TimeSeries and Pattern commands.
Define a seismic load pattern using the LoadPattern command and specify the type of ground motion analysis (e.g. response history analysis, linear dynamic analysis).
Apply the load pattern to the model using the load command.