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Hi,

I am writing an analysis for a 9DoF system with a constant modal damping ratio of 0.05 so that I can compare my results with SAP linear analysis. How can I do that?

Thanks,
Sugandha Singh

Thank you very much. That worked out with a loop for analysis.

Hi, I have written a code to obtain response spectra for a 9DoF system. However, I am having a problem with the recorder command. I can't extract the information from the recorder file to another file at every loop because the recorder file does not get updated until the analysis is finished and we ...

Hi, I am using ElasticMultiLinear model to define a model which is elastic and has a gap of 1mm. when i check results and find stiffness, I don't get correct stiffness(k=31585000). Following is my code, please let me know how can I change this. Thank you. #Analysis of SDoF system subjected to El Cen...

Hi,

I am trying to get force for a zerolength element using the following command:-

recorder Element -file Data/Force.out –time -ele 1 force;

but my output file is empty. Can you please help me with that?

Thanks,
Sugandha

Thank you very much sir. I used multilinear model which lets my model built but still my analysis is giving error which may be due to the method I have defined the load. It is blast load at the node defined at different times for which I have used path time series and assigned reference load value 1...

Hi,

I am trying to do code almost same model but with non linear stiffness. I am having trouble as to which material type should I use for defining stiffness?

Thanks,
Sugandha

Hi,

I am trying to perform impedance analysis for SSI using OpenSees. I can use ShallowFoundationGen command to create material for discrete springs but how do I model damping characteristics of soil? Is it inclusive in ShallowFoundation command?

Thanks,
Sugandha