Torsional vibration
Torsional vibration
(OP)
Hi guys,
I need to perform a torsional vibration analysis to determine the torsional eigenfrequencies for a long shaft (30m) with an impeller on the end.
I tried to use a frequency study, but I only get lateral results. Does anybody know which function I can use?
(torsional vibration example: ht tp://www.e pi-eng.com /mechanica l_engineer ing_basics /torsional _vibration _intro.htm)
Any help is greatly appreciated.
Regards,
Hein de Groot
I need to perform a torsional vibration analysis to determine the torsional eigenfrequencies for a long shaft (30m) with an impeller on the end.
I tried to use a frequency study, but I only get lateral results. Does anybody know which function I can use?
(torsional vibration example: ht
Any help is greatly appreciated.
Regards,
Hein de Groot






RE: Torsional vibration
If you constrain the shaft not to bend, but allow it to rotate then you should see rotational modes. Of course that will not be the correct problem, but it will be a good test to prove to yourself that rotational modes do exist.
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