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Hi I am doing some topology optimisation of a 2D engine pylon and I am getting ERROR # 2148 *** Invalid design problem. All the sensitivities of response 1 (objective) are zero. I have attached my model and can you please tell me what to do to get rid of this error?
Unable to find an attachment - read this blog
You're actually missing the property thickness, which is blank/Zero.
Always run a analysis only run before the optimization to make sure the model runs fine.
You can also check the model before running, in HyperMesh, using Model Checker (Ctrl+F>>model checker Optistruct).
The other point is that your force is applied to a 'flying node' which is not connected to anything, thus no load is applied to the pylon structure, thus no result will be found.
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