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harmonic response in WB: asymmetric modes

Thread starter loginatnine
Start date Jul 29, 2008

Status: Not open for further replies.

Jul 29, 2008

loginatnine

New member

Hi and thanks for looking,

I'm having trouble exciting correctly the asymmetric modes of a simple beam (like 2nd bending, 4th bending etc.). It seems like ANSYS WB needs 2 forces out of phase of 180 degrees or of opposite magnitude to correctly excite them. But then, in that situation, the symmetric modes don't get excited! I need to get this straightened out, do I absolutely need 2 input to excite the asymmetric modes? Am I missing something here? I've included the test model!

Thanks