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Modal analysis of rotor

Arul

Hi ,

I am working on modal analysis of rotor system in optistruct. I have queries regarding constraints. Pls find the following image which shows rotor assembly with bearing. I need to allow rotation free of rotor and shaft at bearing locations. How to give constraints at bearing locations ? Using RBE2 or any other options are there in Optistruct?

Thanks

Arul

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tinh

Hi,

to create constraint at bearing positions, enter panel analysis>constraints pick nodes at bearing location and create SPC fixed 5 dofs and uncheck 6th dof (assume that your shaft is follow z-axis)

mpvnaresh

Sir

I am having the same issue ..but the saft is to be connected to its housing via bearing ..i dont want to model full bearing (to avoid the number of contacts)

so hoe can i connect the shaft with housing with any other elements.