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selimgunay wrote: > That means tangent sitffness proportional damping, where tangent stiffness > corresponds to that at the end of an time step not each iteration dear selimgunay sorry ,Is it equivalent stiffness？Can you explain a little bit more, is this tangent stiffness, is this tangent stiffness...

dear everyone
need help
rayleigh $alphaM $betaK $betaKinit $betaKcomm，How do you use this stiffness（$betaKcomm）? What does this stiffness mean（$betaKcomm）?

dear everyone,
I want to know what is the output of the plasticRotation record command,This command is not described on the official website, but in the example.

selimgunay wrote: > Because the bottom story column bases should still have moment capacities > in the out of plane direction if you are using fiber sections thanks ，I do use the fiber section，But I don't quite understand why the fiber section has an effect on this, can you explain it for me thank y...

A planar frame is built in a three-dimensional model, constraining the degrees of freedom outside the plane，What is the reason that the calculation results show that there is still strength outside the plane

cgtydmrc wrote:
> Dear Frank,
>
> Do you have any idea on that please?
>
> Thanks,
> C.
i also need,could you share it?237239246@qq.com,tanks

How can opensees extract the mass matrix and the stiffness matrix? Vibration mode？
How do I use the leadrubberx unit in the 2 dimension 3 degrees of freedom in opensees?
This question has been bothering me for days. Thank you for your help.

Help leadrubberx source code, my mail jackxiao209@yahoo.com, thank you

thanks fmk

I do not know how to use this command, I hope everyone can help me, thank you

giovannimilan wrote: > I myself did it in the post processing phase... summing up (python script > or even excel) the values of the accel nodal recorder (relative) with the > GM accelleration values, making sure that the time-step of the two is the > same. It worked fine! But I do not know how to us...

giovannimilan wrote: > I myself did it in the post processing phase... summing up (python script or even > excel) the values of the accel nodal recorder (relative) with the GM accelleration > values, making sure that the time-step of the two is the same. It worked fine! thanks ,i know，Do you know ab...

I do not know how to extract the absolute acceleration

2. recorder Node -file nodesA.out -timeSeries 1 -time -node 1 2 3 4 -dof 1 accel; For a UniformExcitation analysis, this command generates output file nodesA.out that contains absolute accelerations (ground motion acceleration + relative acceleration) in x direction for nodes 1, 2, 3, and 4. NOTE th...

Low cycle，The loading method is inverted triangle