Why am I not getting complex frequencies in ANSYS 9.0 with the qrdamp modal
solver and a model with friction (no damping.)
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Here are the requirements to model brake squeal due to sliding friction: 1. Contact must have a sliding status at the end of the static analysis 2. The static analysis must be run with NLGEOM,ON and NROPT,UNSYM 3. The modal must be run with PSOLVEs: PSOLVE,EIGQRDA PSOLVE,EIGEXP 4. The complex key must be set to on: MODOPT,QRDAMP,20,1000,50000,ON In your input the complex key wasn't set, |
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