MODAL Mass and Stiffness Matrices

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Ameri
Posts: 64
Joined: Mon Nov 25, 2013 1:25 am
Location: Colorado State University

MODAL Mass and Stiffness Matrices

Post by Ameri »

Hi, is there any way to obtain MODAL mass or stiffness matrix of a 3D structure modeled in OpenSees? As far as I know the printA command only returns the general/global matrices, but I don't know how to find modal mass and stiffness matrices.
Ph.D. Student Researcher
Colorado State University
Civil & Environmental Engineering
Fort Collins, CO 80523, USA
amerikmr@engr.colostate.edu
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fmk
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Re: MODAL Mass and Stiffness Matrices

Post by fmk »

no .. you would have to record eigenvectors and postprocess
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