engineering fundamentals Discussion Forum
Directory | Career | News | Standards | Industrial | SpecSearch®
Home Membership Magazines Forum Search Member Calculators

Materials

Design

Processes

Units

Formulas

Math
List Recent Topics | Start a New Topic

Message No. 19182, Started by tracylam on 10/04/07

 Hi

I am studying on a 3 DOF system and I can calculate its three natural frequencies and they match quite well with the experimental result. However, I found a phenomenon that there is “splitting” of the natural frequency (I assume there should be 3 sharp peaks on my frequency response curve but 4 peaks appeared). I wonder what the origin of the additional “natural frequency” is. Would you mind giving me some suggestions?

Thanks a lot.

Regards,

Tracy

Reply | Start a New Topic | List Recent Topics
 

Follow-up Messages (3)
If you are talking about a split of frequency measured experimentally, this...
No. 19186, Posted by deajohn5556 on 10/04/07, 12:23 PST.
Dear John,In this way, each peak respresents one degree of freedom. However...
No. 19185, Posted by tracylam on 10/04/07, 10:59 PST.
Analytically, there will be three nearly equal peaks for each mass, bu...
No. 19184, Posted by deajohn5556 on 10/04/07, 09:51 PST.
Home  Membership  About Us  Privacy  Disclaimer  Contact  Advertise

Copyright © 2017 eFunda, Inc.