3D multi-material and multi-joint topology optimization with tooling accessibility constraints
| Autor: | Vlad Florea, Manish Pamwar, Balbir S. Sangha, Il Yong Kim |
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| Rok vydání: | 2019 |
| Předmět: |
Computational model
Iterative and incremental development Mathematical optimization Control and Optimization Computer science Constraint (computer-aided design) Topology optimization 0211 other engineering and technologies Process (computing) 02 engineering and technology Computer Graphics and Computer-Aided Design Computer Science Applications Design for manufacturability 020303 mechanical engineering & transports Joint cost 0203 mechanical engineering Control and Systems Engineering Engineering design process Software 021106 design practice & management |
| Zdroj: | Structural and Multidisciplinary Optimization. 60:2531-2558 |
| ISSN: | 1615-1488 1615-147X |
| DOI: | 10.1007/s00158-019-02344-1 |
| Popis: | This paper proposes a method for performing both multi-material topology optimization and multi-joint topology optimization. The algorithm can determine the optimum placement and selection of material while also optimizing the choice and placement of joint material between components. This method can simultaneously minimize the compliance of the structure as well as the total joint cost while subjected to a mass fraction constraint. A decomposition approach is used to break up the coupling between optimum structural design and optimum joint design. Multi-material and multi-joint topology optimization are then solved sequentially, controlled by an outer loop. By decomposing the problem, gradient-based optimization algorithms can be utilized, enabling the algorithm to solve large computational models efficiently. The proposed process is applied to three 3D standard TO problems. Through these example problems, the need for an iterative process is demonstrated. Improvements to joint manufacturability using the tooling and stress constraints are discussed. Finally, a review of computational cost is performed. |
| Databáze: | OpenAIRE |
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