Hi, I am sutdding the dynamics of a plate supported in all sides made
with composite with de following characterisitcs: (1.) composite
configuration [ (0)_2 / (90)_2 / +45 / -45 ]_s (2.) hickness of the
layers [ 2*h/12 / 2*h/12 / h/12 / h/12 ]_s where h=0.6mm (3.)
dimensions a=b=0.6 by using ANSYS element SHELL 99.
I am also doing a study of the dynamics of the plate by using Navier
method's and Rayleigh Ritz method. But the values that I have from FE
with ANSYS doesn't match with the values of the frequency of vibrations
of Navier and Ritz method's, the same happens with de ways of
vibration. The first and second frequency of vibration are very similar
but the ways of vibration desn´t mach. Does anyone know about it or
have more experience than me in this area?
Thanks a lot,
Bruno Serrano