Learning Forum

[shivaji.deshmukh]

What will be the effect of if Point mass behavior changed from Rigid to Deformable or Coupled in the modal analysis?

[Erik Kostson]

If you search the internet there are lots of posts on the topic of rigid and deformable remote points, or remote forces or point mass (it does not matter if it is one of this 3, the conecpt of deformable and rigid is still the same).

 

https://www.google.com/search?q=rigid+vs+deformable+and+ansys&rlz=1C1GCEB_enGB865GB865&sxsrf=ALiCzsbxo53X_JnoBjMQ8DXOSP4Ni1IM-Q%3A1655358472873&ei=CMSqYvj3NJeO8gLEx5aQDA&ved=0ahUKEwj4m4HuorH4AhUXh1wKHcSjBcIQ4dUDCA4&uact=5&oq=rigid+vs+deformable+and+ansys&gs_lcp=Cgdnd3Mtd2l6EAM6BwgAEEcQsANKBAhBGABKBAhGGABQzB9YlzRg5zVoA3ABeAGAAVmIAekIkgECMTiYAQCgAQHIAQjAAQE&sclient=gws-wiz

[shivaji.deshmukh]

In my analysis I have considered bushing joint at front because bushing is going to use in actual condition, so i have added the stiffness of the bushing in that joint. See the image below. But problem is when I considered deformable mass point I get lower frequency value and if I consider rigid mass point the I get higher frequency value. I don't think so it is same behavior.