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diegoandresalvarez / BWBN

Simulation of a SDOF Bouc-Wen-Baber-Noori hysteretic system
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Input as displacement #1

Open kouzibenkou opened 5 months ago

kouzibenkou commented 5 months ago

Can this input be solved if it is displacement rather than forceIMG_0930

kouzibenkou commented 5 months ago

This is a situation where the displacement loading function is known. If the displacement loading function cannot be expressed in specific functions, how should we solve itimage

diegoandresalvarez commented 5 months ago

Sorry @kouzibenkou, I do not understand what are you asking. Could you please post a complete question?

kouzibenkou commented 5 months ago

It's about solving the parts I circled in red on Wikipedia

diegoandresalvarez commented 5 months ago

If I understand you well, you need as input the displacement time series instead of the one of acceleration. In that case, you will have to integrate the acceleration twice in order to obtain the displacement. However, in practice, one should not do this, in asmuch as acceleration data contains noise, and repeated integration amplifies this noise, leading to inaccurate displacement estimates.

In that case, one should use a Kalman filter in order to eliminate that noise and perform the integration.

See https://doi.org/10.1016/j.ymssp.2006.03.005 that paper, if I well recall, could give you some hints on how to perform this procedure.