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Model-based, multi-material topology optimization taking into account cost and manufacturability
Structural and Multidisciplinary Optimization ( IF 3.9 ) Pub Date : 2020-06-25 , DOI: 10.1007/s00158-020-02641-0
Carlos López , Sofie Burggraeve , Pieter Lietaert , Jan Stroobants , Xiang Xie , Stijn Jonckheere , Bert Pluymers , Wim Desmet

Multi-material topology optimization has become a popular design optimization discipline since it allows to go a step further in topology optimization of the design of lightweight components and structures. However, it also presents additional challenges in terms of managing a higher complexity in the optimization problem, reliably estimating the manufacturing cost taking into account the cost of joining dissimilar materials, or assessing the manufacturability of the design. This paper proposes a set of methods that solve generic multi-material topology optimization problems, while including several novel aspects such as a comprehensive cost model, specific design rules for multi-material design, and model order reduction techniques to improve the computational efficiency. Two different examples, consisting of a sitting bench and a car cowling, have been solved in order to support the benefits of the approach.



中文翻译:

基于模型的多材料拓扑优化,同时考虑成本和可制造性

多材料拓扑优化已成为一种流行的设计优化学科,因为它使轻型部件和结构设计的拓扑优化更进一步。但是,在管理优化问题中的更高复杂性,考虑加入异种材料的成本来可靠地估算制造成本或评估设计的可制造性方面,这也带来了其他挑战。本文提出了一套解决通用多材料拓扑优化问题的方法,同时涵盖了几个新颖的方面,例如综合成本模型,多材料设计的特定设计规则以及模型阶数减少技术,以提高计算效率。有两个不同的示例,包括坐板凳和汽车整流罩,

更新日期:2020-06-26
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