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Global Stiffness Matrix

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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


0 Replies Last Post 8 mar 2024, 08:46 GMT-5
COMSOL Moderator

Hello Irakli Ambokadze

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