Modal analysis of a base excited composite plate
Modal analysis of a base excited composite plate
(OP)
Hello,
I am doing modal analysis of a composite plate exposed to base excitation. The plate is fixed at the center with the nut and allowed to move in y-direction due to the vibrations. After designing my plate, if I don't put any boundary conditions, my mode shapes are coming very correct but the natural frequencies are very high. But if I constraint it from the center, natural frequencies come a bit down but mode shapes change completely.
Kindly advise me the correct boundary conditions after looking at the attachment pictures.(http://files.engineering.com/getfile.aspx?folder=f...)
Thanking you in anticipation.
Regards,
Kanza
I am doing modal analysis of a composite plate exposed to base excitation. The plate is fixed at the center with the nut and allowed to move in y-direction due to the vibrations. After designing my plate, if I don't put any boundary conditions, my mode shapes are coming very correct but the natural frequencies are very high. But if I constraint it from the center, natural frequencies come a bit down but mode shapes change completely.
Kindly advise me the correct boundary conditions after looking at the attachment pictures.(http://files.engineering.com/getfile.aspx?folder=f...)
Thanking you in anticipation.
Regards,
Kanza





RE: Modal analysis of a base excited composite plate
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Modal analysis of a base excited composite plate
http://files.engineering.com/getfile.aspx?folder=a...
I hope you will be able to see it now-
I am basically interested in getting the right boundary conditions for a base excited plate to do the modal analysis. plate has a hole in the center with which it is attached to the vibrator through a pin.
I want to get the solution as early as possible. I will be highly grateful to you if anyone of you can help me out in this problem.
Regards,
Kanza
RE: Modal analysis of a base excited composite plate
RE: Modal analysis of a base excited composite plate