Topic: a little trouble on eigen value analysis
Hello everyone.Recently, I am reasearching on the intrinsic frequency(also called eigenvalues).And I need the help of OOFEM.Luckily,I used the elements of LTRSpace and LSpace in the EigenValueDynamic. And I get the result.However, when I tried the ekements of linquad3dplanestress, I can not get the intrinsic frequency,but get the result like 1.#QNAN000e+000 .
Eigen Values (Omega^2) are:
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1.#QNAN000e+000 -1.#IND0000e+000 1.#QNAN000e+000 -1.#IND0000e+000 1.#QNAN000e+000