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Global Stiffness Matrix
Posted Mar 8, 2024, 8:46 a.m. EST Equation-Based Modeling, Physics Interfaces, Structural Dynamics Version 6.2 0 Replies
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Hi all,
I have two rigid foundationsm let's call them m1 and m2. This foundations are connected to each other, as well as to a fixed point using Spring-Damper node (3x3 matrix). Hence, the global matrix that is produced by such system is the following:
.
Where each coefficient K is 3x3 matrix.
However, for some specific reasons I need this global matrix to be in the form of:
In other words, I need transposed matrix to be on the off-diagonal place (I do not care what happenes to the diagonal terms).
As am I am new to COMSOL software, I was wondering if there is a way to achieve this? I have tried my luck with using nonlocali couplings, using data from point probe to alter stiffness of the element instead of adding a coupling spring, but due to my lack of knowledge, I cannot achieve this.
Has anyone had the similar experience?
Thank you all for your help
Irakli
Hello Irakli Ambokadze
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