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Dear Vesna, I have tried to plot the base shear against the displacement but I am having some difficulties. I read in one of your post that I should plot the second column of Dfree.out and the Rbase.out but when I ran my file, my Rbase.out contains negative number, so I plotted without the negative ...

Dear Vesna, I have tried to plot the base shear against the displacement but I am having some difficulties. I read in one of your post that I should plot the second column of Dfree.out and the Rbase.out but when I ran my file, my Rbase.out contains negative number, so I plotted without the negative ...

Hello

I am new to opensees. I am trying to change the spring stiffness inside the source code to using Wringler spring stiffness equation.
I would really appreciate any help.

Thank you