当前位置: X-MOL 学术Adv. Eng. Inform. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Multi-material structural topology optimization with decision making of stiffness design criteria
Advanced Engineering Informatics ( IF 8.8 ) Pub Date : 2020-05-13 , DOI: 10.1016/j.aei.2020.101098
Quoc Hoan Doan , Dongkyu Lee , Jaehong Lee , Joowon Kang

A new methodology for making design decisions of structures using multi-material optimum topology information is presented. Multi-material analysis contributes significant applications to enhance the bearing capacity and performance of structures. A method that chooses an appropriate material combination satisfying design stiffness requirement economically is currently needed. An alternative method of making design-decision is to utilize a multi-material topology optimization (MMTO) approach. This study provides a new computational design optimization procedure as a guideline to find the optimal multi-material design by considering structure strain energy and material cost. The MMTO problem is analyzed using an alternative active-phase approach. The procedure consists of three design steps. First, steel grid configurations and composite with material properties are defined as a given structure for automatic design decision-making (DDM). And then design criteria of the steel composites structure is given to be limited strain energy by designers and engineers. Second, topology changes in the automatic distribution of multi-steel materials combination and volume control of each material during optimization procedures are achieved and at the same time, their converged minimal strain energy is produced for each material combination. And third, the strain energy and material cost which is computed based on the material ratio in the combinations are used as design decision parameters. A study in constructional steel composites to produce optimal and economical multi-material designs demonstrates the efficiency of the present DDM methodology.



中文翻译:

决定刚度设计标准的多材料结构拓扑优化

提出了一种使用多材料最佳拓扑信息进行结构设计决策的新方法。多材料分析在增强结构的承载能力和性能方面做出了重要的贡献。当前需要一种经济地选择满足设计刚度要求的合适材料组合的方法。做出设计决策的另一种方法是利用多材料拓扑优化(MMTO)方法。这项研究提供了一种新的计算设计优化程序,作为通过考虑结构应变能和材料成本来找到最佳多材料设计的指南。MMTO问题使用替代的有源阶段方法进行了分析。该过程包括三个设计步骤。第一,钢网格结构和具有材料特性的复合材料被定义为用于自动设计决策(DDM)的给定结构。然后,设计者和工程师给出了钢复合结构的设计准则以限制应变能。其次,在优化过程中实现了多钢材料组合的自动分布的拓扑变化以及每种材料的体积控制,同时,每种材料组合产生的会聚最小应变能。第三,将基于组合中的材料比率计算出的应变能和材料成本用作设计决策参数。一项对建筑钢复合材料进行生产以产生最佳且经济的多材料设计的研究证明了当前DDM方法的有效性。

更新日期:2020-05-13
down
wechat
bug