Eigen-value Analysis

[Timoko]

Hallo friends,

I have calculated the eigenvalue of orthotropic plate in FEM, how i can calculate the eigen value analyically???

is it not (the critical buckling load/refference load)??

thanks!

 

[GregLocock]

Your terminology may lead people astray. In my field the eigenvalue is the frequency of a resonant mode. If you mean, how do you calculate the buckling strength of a flat plate, I suspect Mr Roarke's book or Timoshenko is the place to start.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[ESPcomposites]

The eigenvalue solver can be used for both natural frequency and buckling problems.

For plates that are orthotropic in bending, you can find some basic solutions in MIL-HDBK-17. There are quite a few more solutions in "Mechanics of Composite Structures" by Kollar and Springer.

Brian

http://www.espcomposites.com