Nowadays using of finite element (FE) optimization tools allows to simplify designer's work. The goal of thó current project is the demonstration of FE tools for topological, shape and bead optimization. FE topological optimization software FE-DESIGN Tosca was chosen as the main instrument of analysis. Research presented was carried out in the frameworks of trial academic license provided by Mechanical Engineering Service Company.
FE topological algorithm Optimality Criterion and Tosca controller-based algorithm are adopted in FE-DESIGN Tosca software. It is announced by developers and illustrated in the current research, that with use of Tosca it's possible to use adaptive mesh refinement, groups of symmetry, member size control, filtration radius control, manufacturing and stamping restriction.
As illustration of algorithm working the test optimization problem - cantilever beam - was solved. The problem statement and process of solution are shown at Fig. 1-2.
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Figure. 1. Problem statement |
Figure. 2. Topological optimization process |
Demonstration of symmetry groups options was carried out on the same problem. Using of symmetry group could be helpful in large industrial problem: it could assist to reduce the number of DOF.
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Figure 3. Cyclic symmetry |
Figure 4. Line symmetry |
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Figure 5. Central point symmetry |
Figure 6. Symmetry of rotation |
The problem of U-shape plate was solved for testing of member size control option.
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Figure 7. Problem statement |
Figure 8. Without member size control |
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Figure 9. Minimization of member size |
Figure 10. Maximization of member size |
As the example of MIN-MAX problem the J-curved plate with 3 load cases was optimized.
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Figure 11. Problem statement |
Figure 12. Topological optimization process |
Topological Optimization of the high-pressure vessel “Crystal” used for artificial diamond manufacturing was taken as the example of large industrial problem.
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Figure 13. High-pressure vessel “Crystal” |
Figure 14. Results of topological optimization (with use of symmetry) |
In order to get the suitable for designer result of optimization the possibility of Tosca.Smooth tool was used. This tool allows creation of CAD model based on optimization results.
Figure. 15. Topological optimization of the high-pressure vessel
Thus, in this example, it was shown how to decrease the constriction weight by using FE topological optimization tools. Reads: 2319
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