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Dear users Frank said that different damping ratio could be assigned to different modes in modalDamping command, Does any one know how could it be possible? because the command is just: modalDamping $ratio In addition, I want to assign different damping ratio to different region in modal damping, Do...

Dear Users I want to use ShellMITC4 as a pile cap, but after defining a shell element using four Peripheral nodes, the OSP doesn't show any shell element!!, it just shows an ordinary element between two early nodes among four nodes defined as peripheral nodes!!! In addition, what does it mean with t...

I don't mean that Rayleigh gives an accurate result, I just have two questions about modalDamping as follows: 1- Is it possible to assign different damping ratio to different regions in different modes using modalDamping command? 2-How could different damping ratio be assigned to different modes in ...

If I want to assign different damping to different region which is possible for Rayleigh command, how it could be used for modalDamping? In addition, in modalDamping only one damping ratio can be assigned for all modes, how it could be accurate? (even if different frequency and mode shapes for each ...

I'm searching about MODAL DAMPING Command in Opensees (or applying Modal Damping) in Opensees Version 2.5. which has just released,
Would you please help me ? Pleaseeee

Dear Users
I'm searching about MODAL DAMPING Command in Opensees (or applying Modal Damping) in Opensees
Would you please help me ? Pleaseeee

Dear Users
I'm searching about MODAL DAMPING Command in Opensees (or applying Modal Damping) in Opensees
Would you please help me ? Pleaseeee