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Torsional Vibration of a plate and a frame attached to a bar element

Thread starter Bharathsf
Start date Apr 21, 2013

Status: Not open for further replies.

Apr 21, 2013

Bharathsf

Aerospace

I have modelled a circular plate attached to a frame using rigid elements. I have attached 2 cbar elements on either side of the frame and i have rigidly constrained the bar elements. I ran the file and got a natural frequency of 3Hz. I am not sure if the answer is correct. How to calculate the natural frequency using hand calculations for the model so that I can verify.I have attached the dat file of the model.
The radius of the bar element is 0.8845 mm so that the torsional stiffness of the bar will be 5000N-mm.

Please help me

Bharat