Multisupport Pattern

[shriyabothra]

Hi everyone,

I was trying to apply earthquake excitation (acceleration) to a particular node using multisupport pattern, plain ground motion. it is giving a warning as "integration is required for to get ground displacement from ground velocity.". I tried giving "-int Simpson" still Opensees is giving the same warning.
It will be great if I get help for the same.

Thanks
Shriya

[fmk]

it is a warning and not an error .. you can ignore it, you might record the disp and vel that are set at the nodes and plot them.