Modal analysis of a simple cantilever beam
Modal analysis of a simple cantilever beam
(OP)
Hi,
I ran a modal analysis of a hollow rectangular section cantilever beam with beam4, beam8 and beam188 elements. Beam4 and Beam44 produced the same frequencies for bending modes and match closely to hand calculations. But results with Beam188 differ by ~30%. Can anyone explain the reason for this behavior?
Thank You.
I ran a modal analysis of a hollow rectangular section cantilever beam with beam4, beam8 and beam188 elements. Beam4 and Beam44 produced the same frequencies for bending modes and match closely to hand calculations. But results with Beam188 differ by ~30%. Can anyone explain the reason for this behavior?
Thank You.





RE: Modal analysis of a simple cantilever beam
Good luck,
-Brian
RE: Modal analysis of a simple cantilever beam
Thanks.
RE: Modal analysis of a simple cantilever beam
are you shure, teh real constants of the beam8 and beam44 are correct?
Regards,
Alex
RE: Modal analysis of a simple cantilever beam
Thanks.
RE: Modal analysis of a simple cantilever beam
RE: Modal analysis of a simple cantilever beam