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eigenvalue shift with additional point, no mass assigned

Posted Jun 5, 2014, 3:30 p.m. EDT Studies & Solvers, Structural Mechanics Version 4.3a 0 Replies

Jie Yang
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Hi, I've met some trouble when calculating the eigen-frequencies of notched plate. I've compared three cases, the first one is a simply notched plate, the second one is a notched plate with one more point in the bottom of the plate for future point load, the third cases is to calculate the dynamic response of a notched plate.

My current problem is the eigenvalues of the first two cases are quite different, i.e., simple notched plate and the notched plate with one additional point, I don't know what the difference comes from, is it due to the mesh? or it's due to the additional mass of this point(I don't assign additional mass to this point)? or due to some default damping that I'm ignoring?
0 Replies Last Post Jun 5, 2014, 3:30 p.m. EDT
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Hello Jie Yang

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