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I compared results with real experimentation and comsol model. Both are coherent but not with my model. I choose a 2 flex beam model with 3 dof by node (2 translation and 1 rotation). Then I wrote down M and K matrix and try to solve det(K-w²M)=0, with computer in the first place, but results...

Hi people, I am trying to model the V shape fixed-free beam (view on attachments) with beam dimensions in order to get the resonance frequency. http://files.engineering.com/getfile.aspx?folder=f8744b93-ea3f-4c8b-866e-2f21be3ea0c2&file=beam-shape.png I tried a 2 x (mass spring system) or beam...