Optimize material properties for PSOLID
Hi,
I would like to optimize the material properties for a PSOLID with a MAT1 material (i.e., E, RHO, GE). For example, I have a solid bar of dimensions 1 x 1 x 1 inch. I want the frequency to be 4000Hz. Instead of changing the size, I want to solve for the MAT1 properties that would yield the 4000Hz. I have tried to use the DESVAR, DVPREL, and DDVAL functions, but it seems that those want to work with PSHELL, not PSOLID.
My model is attached. It is basically a SDOF mass spring system that is fully constrained on one end and constrained in all DOFs except X on the opposite end. I give it an initial condition Xo = 0.25 inch. It runs a direct transient analysis.
Thanks,
Neil Hall, Callaway Golf, 760-822-4794
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The way I would do it...
Open hyperstudy, on define models select "Parameterized file" and select your fem. It'll ask if you want to create a parameterised file (say yes). It'll then open a word file, scroll down to the parameters you want to set (so E, rho etc) to a range of values.
Then set up your studies with a target frequency of 4kHz with some desired constraint.
PSOLID does not allow you to change anything in particular.
But MAT1 can be changed, for sure (E, rho, poisson,...). It uses a parametric optimization for DVMREL. (material).
For spring elements CBUSH, we could optimize the stiffness and damping properties, for example.