Two-scale topology optimization with heterogeneous mesostructures based on a local volume constraint
A new approach to produce optimal porous mesostructures and at the same time optimizing the macro structure subject to a compliance cost functional is presented. It is based on a phase-field formulation of topology optimization and uses a local volume constraint (LVC). The main novelty is that the r...
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| Published in | Computers & mathematics with applications (1987) Vol. 126; pp. 100 - 114 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
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Elsevier Ltd
15.11.2022
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| Abstract | A new approach to produce optimal porous mesostructures and at the same time optimizing the macro structure subject to a compliance cost functional is presented. It is based on a phase-field formulation of topology optimization and uses a local volume constraint (LVC). The main novelty is that the radius of the LVC may depend both on space and a local stress measure. This allows for creating optimal topologies with heterogeneous mesostructures enforcing any desired spatial grading and accommodating stress concentrations by stress dependent pore size. The resulting optimal control problem is analysed mathematically, numerical results show its versatility in creating optimal macroscopic designs with tailored mesostructures. |
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| AbstractList | A new approach to produce optimal porous mesostructures and at the same time optimizing the macro structure subject to a compliance cost functional is presented. It is based on a phase-field formulation of topology optimization and uses a local volume constraint (LVC). The main novelty is that the radius of the LVC may depend both on space and a local stress measure. This allows for creating optimal topologies with heterogeneous mesostructures enforcing any desired spatial grading and accommodating stress concentrations by stress dependent pore size. The resulting optimal control problem is analysed mathematically, numerical results show its versatility in creating optimal macroscopic designs with tailored mesostructures. |
| Author | Ebeling-Rump, Moritz Hömberg, Dietmar Lasarzik, Robert |
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| SubjectTerms | Additive manufacturing Linear elasticity Numerical simulation Optimality conditions Phase-field method Topology optimization |
| Title | Two-scale topology optimization with heterogeneous mesostructures based on a local volume constraint |
| URI | https://dx.doi.org/10.1016/j.camwa.2022.09.004 |
| Volume | 126 |
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