Hello,
I'm extracting the stiffness and mass matrices of my model by editing the input file. However, the matrices are way to big, and I need to reduce them.
Just something like a modal reduction, where I'm interested only in the 10 first modes of the structure, let's say.
I thought that by limiting the eigenvalues extraction, either by maximum frequency or fixed number of modes, and requesting the extraction after the frequency step would extract the matrix related to the modes I wanted. But that does not happened.
Does anyone have any idea of how can I extract a reduced matrix instead of the global matrix?
Best regards,
Marcel.
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