Re: [Numpy-discussion] Getting non-normalized eigenvectors from generalized eigenvalue solution?

2011-12-21 Thread Lennart Fricke
I read it like that: (**T is the transpose) Let's call M the mass matrix and N the modal mass matrix. Then X**T*M*X=N. If X (matrix of eigenvectors) is normalized with respect to M, N is I (unity) so it just mean that X**T*M*X=I. That is what octave and matlab give you. For this to be true. x**

Re: [Numpy-discussion] Getting non-normalized eigenvectors from generalized eigenvalue solution?

2011-12-21 Thread Lennart Fricke
Dear Fahreddın, I think, the norm of the eigenvectors corresponds to some generic amplitude. But that is something you cannot extract from the solution of the eigenvalue problem but it depends on the initial deflection or velocities. So I think you should be able to use the normalized values just