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Optistruct Error - All Sensitivites Zero

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AdamMitchell

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Feb 13, 2012
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As in this thread - thread1062-268254.

I've set up my 2D shell problem and the solver is failing and giving me an error saying "all the sensitivties of the design problem are zero."

The previous thread on this issue gave a couple of suggestions, both of which I have checked and I believe the model to be set up correctly but I am still getting this error.

Any help would be ace, thanks.
 
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