experimental modal anlysis
experimental modal anlysis
(OP)
Hi
I have a structure of cantilever beam amd (T-shape)with two joints which connect the two parts of the beam to be in T-form.when we mounted the beam by its free end to a table and excited it by a hammar to find the two first modes. the bending mode disappearedit is suspected that the dynamics of the table influenced the the total behavior.what I can do to know the reason.I need help
thank you
I have a structure of cantilever beam amd (T-shape)with two joints which connect the two parts of the beam to be in T-form.when we mounted the beam by its free end to a table and excited it by a hammar to find the two first modes. the bending mode disappearedit is suspected that the dynamics of the table influenced the the total behavior.what I can do to know the reason.I need help
thank you





RE: experimental modal anlysis
I suggest you do a modal test of the table itself, and do a free free modal of your component, and then use the theory of receptances to simulate bolting the two together.
Cheers
Greg Locock
RE: experimental modal anlysis
RE: experimental modal anlysis
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: experimental modal anlysis
M
--
Dr Michael F Platten