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Showing results for tags 'SPC'.
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Hi, I am a new HyperWorks user and I’m trying to setup an topology optimization. As optimization constraint, I want to declare a maximum force on my SPC’s, but I don’t know how. The SPC’s I’m using are respectively bolted holes. I have defined them with RBE2 Elements with a calculated node in the middle of the hole. In the post-processor I already can see the forces on these SPC’s. Is it possible to define these forces with a maximum value in the pre-processor? How can I optimize these SPC's forces to an maximum value of force they can withstand? Thank your beforehand for your answer.
Hello, in order to get a smooth stress distribution with no spikes, my plan is to constrain a surface with RBE3-Elements to an SPC. Since it is not possible to directly connect the dependent nodes of the RBE3 to the SPC I thought I could use a spring (cbush) between the RBE3 and the SPC. As long as K1 and K4 of the pbush property of the spring are rigid my simulation runs. But obviously the spring will be deformed when K2, K3 K5 and K6 are zero. Nevertheless I get a smooth stress distribution. Making all six Ks rigid gives me an error. Using an RBE2 directly connected to an SPC gives me spikes. So my questions are: - how can all 6 Ks of the pbush be rigid without getting an error? - how can I connect an RBE3 to an SPC (is there a better way than using a rigid spring)? The attached screen shot shows the problem. Thank you in advance. Felix