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Optistruct Modal FRF analysis encouter an error ==>OptiStruct ERROR: 156

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Guest

hi,

I am doing the modal frequancy responce analysis in optistructure and i am facing problem which is ,

ERROR # 156 FROM SUBROUTINE splncz

No mode exists in the interval specified.

Solver error no. = 0

subcase id = 1

minimum frequency = 2.000000E+01

maximum frequency = 2.500000E+02

Check the model and rerun the problem.

***** FATAL SOLVER ERROR *****

This error occurs in subroutine slvdrv

Is there any one who can help me to solve this problem i will be very thank full to you

Thanks

Regards

Bali

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Guest

Try rerunning with a much larger frequency range, say 20 - 1000Hz or with a lower bound and a number of modes and no upper limit. The error indicates that no modes are predicted in the range requested, so there may not be anything wrong with the model.

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