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draw mode shape with matlab

Submitted by hrbeu221 on
research

if M is your mass matrix and K is the stiffness matrix, use

[phi w2]=eig(K,M);

  phi contains the eigenvectors (each column is a modeshape)

 w2 is a diagonal matrix, each diagonal entry contains wn(i)^2

 (i.e. the i'th natural frequency squared).

Then how to draw the mode shape with eigenvectors?

 Thank you.

asimkm

Each entry in columns corresponds to the normalized nodal displacement. Each of them should be plotted against the corresponding nodal coordinates of that node.

regards

asim

Wed, 09/14/2011 - 07:03 Permalink