Topology optimization of shell-infill structures using a distance regularized parametric level-set method
| العنوان: | Topology optimization of shell-infill structures using a distance regularized parametric level-set method |
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| المؤلفون: | Sheng Chu, Mi Xiao, Fu Junjian, Hao Li, Liang Gao |
| المصدر: | Structural and Multidisciplinary Optimization. 59:249-262 |
| بيانات النشر: | Springer Science and Business Media LLC, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Control and Optimization, Level set method, Topology optimization, Mathematical analysis, 0211 other engineering and technologies, Shell (structure), Signed distance function, 02 engineering and technology, Function (mathematics), Computer Graphics and Computer-Aided Design, Regularization (mathematics), Computer Science Applications, 020303 mechanical engineering & transports, 0203 mechanical engineering, Control and Systems Engineering, Set function, Software, 021106 design practice & management, Mathematics, Parametric statistics |
| الوصف: | This paper presents a novel topology optimization formulation for shell-infill structures based on a distance regularized parametric level-set method (PLSM). In this method, the outer shell and the infill are represented by two distinct level sets of a single-level set function (LSF). In order to obtain a controllable and uniform shell thickness, a distance regularization (DR) term is introduced to formulate a weighted bi-objective function. The DR term is minimized along with the original objective, regularizing the parametric LSF close to a signed distance function. With the signed distance property, the area between the two-level sets can be contoured as the shell with a uniform thickness. Additionally, the presented formulation retains one important merit of the PLSM that new holes are able to nucleate during the optimization process. With respect to the material of the shell, the infill is filled with a weaker and lighter material with tunable parameters. Particularly, the infill can be pre-designed with isotropic microstructures. Three compliance minimization examples are provided to demonstrate the effectiveness of this formulation. |
| تدمد: | 1615-1488 1615-147X |
| DOI: | 10.1007/s00158-018-2064-6 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::eb51c70a4005f8fab5111170da985392 https://doi.org/10.1007/s00158-018-2064-6 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........eb51c70a4005f8fab5111170da985392 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16151488 1615147X |
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| DOI: | 10.1007/s00158-018-2064-6 |