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Hi everyone! I need to extract the mass matrix from a 2D frame, so I'm using the PrintA command in a static analysis so the command prints the stiffness matrix, there is another command that can be used to extract the mass matrix or how could you get it ?

Thanks so much for any help.

Thank you so much for your help.

Hi, I'm working on a 2D model of an existing office building structure, we need to do the seismic analysis but we couldn't found yet some information about the reinforced of beams and columns, I don't really know if that information is necesary at this part of the analysis for the openSees, I'd real...