Modal analysis using FEM: Difference between revisions

Revision as of 13:49, 20 July 2009

Revision as of 14:09, 20 July 2009

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== Methods of solution ==

For linear elastic problems that are properly set up (no rigid body rotation or translation),

the stiffness and mass matrices and the system in general are [[Positive-definite matrix|positive definite ]].

These are the easiest matrices to deal with because the numerical methods commonly