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#1 2017-08-25 06:53:57

From: Brno, Czech Republic
Registered: 2017-01-03
Posts: 28

Variable bearing stiffness and damping


I am solving rotor dynamics problems and I want to solve harmonics analysis of rotor with unbalance and foundation excitation.

As a first step I have performed modal analysis of this rotor for multiple rotation speed and constructed Campbell diagram. In this type of analysis I was able to change stiffness and damping parameters of rotor with each speed (as proposed in U2.06.32 section 3.2.3). But how can I make it work in case of harmonic or transient analysis. I can not use for loop for changing bearing parameters. Is there any robust way how to do it?