Displacement of Node in local coordinate system as optimization constraint
Altair EmployeeHy there,
i'm setting up a composite optimization in Hyperworks (Solver: Optistruct) and want to use the displacement of a few nodes (measuring Points) as Responses. Every node has its own coordinate System, in which i want to measure the displacement (for example in x-direction). This is caused by the real displacement and measuring directions of the manufactured (existing) part.
The displacements of this nodes should be in a specific range (constraint) in the optimization. This ist how i want to define the stiffness of my model.
I created the Systems (by global coordinates, vectors and nodes) and assigned them to the measuring points ( mesh -> assign -> node Analysis System).
Afterwards i created the corresponding responses of the same nodes (analysis -> optimization -> Responses -> static displacement) and gave them their constraints.
I did set up a freesize optimization and all Response values in the .out file are zero (except Mass).
Which approach would you suggest for my Problem?
Thanks in advance,
Andreas Kießkalt
Answers
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Hi @kiesskalt
Can you share the .out file, please?
Do you see any results when you have nodes in global coordinate system?
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Hy,
no problem, here it is!
until now i haven't defined nodes for displacement in global coordinate system, nut i will figure out if i get some output.
thanks for now,
Andreas Kießkalt
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Hi Andreas Kießkalt
Looks like load created is not applied on the FE model at all, Can you cross check the model?
Maybe just run a linear static analysis and check the results. If you don't see any deformation, then no load is applied on FE.
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Hy,
i have 3 loadsteps and get a Deformation in each loadstep, showed in hyperview. I used rigid elements to connect the loads with the mesh.
edit: i will do rerun and cross check
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