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Rohan Singh

CBUSH Rotational stiffness not working

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Hi,

 

I am trying to do modal analysis of a leaf of a  leaf spring. The leaf spring needs to be provided some rotational stiffness at the end.

I have basically connected the eye of the leaf through RBE2 to a single point which in turn is connected to a CBUSH element to provide rotational stiffness.

 

However, my model is not showing any change in modal frequencies(i.e. no stiffness added in rotational direction) even though i am using 'RIGID' stiffness.

Can you please clarify why it is happening like that? 

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