Rayleigh Damping Command in OpenSees Documentation
= Rayleigh Damping Command in OpenSees Documentation
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https://opensees.github.io/OpenSeesDocumentation/user/manual/model/damping/rayleigh.html
Section3.1.13.1, coefficient table, damping-matrix formula and Note. The command combines mass with current, initial or last-committed stiffness matrices; the note cautions about concentrated-plasticity nonlinear time-history models.