How to Find Similar Eigenvectors
How to Find Similar Eigenvectors
(OP)
If i run a FE model with slight difference, say i changed the Thickness of couple of components, i will get two sets of Eigenvectors. Is there a way, one can find out whether some of these eigenvectors are similar. As the eigenvectors are normalized and linear, only substracting two eigenvector columns will not be enough. What can one do to find out if the two eigenvector columns are similar.
I am using NASTRAN and will use a DMAP code.
I am using NASTRAN and will use a DMAP code.





RE: How to Find Similar Eigenvectors
Cheers
Greg Locock
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RE: How to Find Similar Eigenvectors
If you have a decent post-processor, I always animate mode shapes on the screen and spin them around a bit - it will help to reveal any significant differences in shape.
RE: How to Find Similar Eigenvectors