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  1. Hi, I already worked a lot with hyperworks but right now I'm looking for a possibility to optimize the material within a given volume. That means I have a component made out of undirected long fibers (material is idealized isotropic) with a fixed volume and want to know where do I need which fiber volume fraction. With lower fiber volume fraction, the density of the material gets lower (and the mass of course too) but the mechanical properties getting lower as well. And that's the optimization I want to have... high fiber volume fraction only where it is necessary to minimize the weight. I don't want to make a topology optimization because the shape and the volume is completely fixed. So do you have any idea how i can handle this problem? I'm not sure if it is possible to have a continuous density distribution within the component with an optimization but maybe I can define for example 10 times the same material but with different fiber volume fractions (= different density, young modulus, yield strength...) and the program tells me where which material should be. Thank you for your help!
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