Support structure constrained topology optimization for additive manufacturing
Support structure constrained topology optimization for additive manufacturing
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DOI：
10.1016/j.cad.2016.08.006
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发表时间：
2016-12-01
影响因子：
4.3
通讯作者：
Suresh, Krishnan
中科院分区：
文献类型：
--
作者：
Mirzendehdel, Amir M.;Suresh, Krishnan
如今，人们对集成增材制造（AM）和拓扑优化（TO）非常感兴趣。然而，TO通常会导致设计不适合AM。例如，拓扑优化的设计可能需要大量的支撑结构，然后才能进行增材制造，导致制造和清理成本增加。在本文中，我们提出了一种TO方法，将导致设计需要显着减少支撑结构。为此，引入了“支撑结构拓扑灵敏度”的概念。这与性能敏感性相结合，以产生一个TO框架，最大限度地提高性能，受到支持结构的限制。通过数值实验证明了该方法的鲁棒性和有效性，并通过熔融沉积建模，一个流行的AM工艺进行了验证。(C)2016爱思唯尔有限公司版权所有
There is significant interest today in integrating additive manufacturing (AM) and topology optimization (TO). However, TO often leads to designs that are not AM friendly. For example, topologically optimized designs may require significant amount of support structures before they can be additively manufactured, resulting in increased fabrication and clean-up costs.In this paper, we propose a TO methodology that will lead to designs requiring significantly reduced support structures. Towards this end, the concept of 'support structure topological sensitivity' is introduced. This is combined with performance sensitivity to result in a TO framework that maximizes performance, subject to support structure constraints. The robustness and efficiency of the proposed method is demonstrated through numerical experiments, and validated through fused deposition modeling, a popular AM process. (C) 2016 Elsevier Ltd. All rights reserved.