多材料、多约束、多负载情况下的拓扑优化
2019-06-06 11:30     (点击: )

学术报告通知

报告题目:多材料、多约束、多负载情况下的拓扑优化

Topology Optimization with Multiple Materials, Multiple Constraints, and Multiple Load Cases

报告人:Xiaojia Zhang  助理教授  伊利诺伊大学

  间:2019611日(周二) 1400

  点:综合实验三号楼4405(会议室)

Abstract:

Topology optimization is a computational design tool for finding optimal layouts of structures and material microstructures. However, most work in this field has been restricted to single material with linear material behavior, limited volume constraint settings, and a single load case. To address these issues, we propose an efficient multi-material topology optimization formulation considering material nonlinearity. The proposed formulation handles an arbitrary number of candidate materials with flexible material properties, features freely specified material layers, and includes a generalized volume constraint setting. To efficiently handle such arbitrary volume constraints, we derive a novel design update scheme that performs robust updates of the design variables associated with each volume constraint independently. To obtain designs under many load cases, we also present a randomized approach that efficiently optimizes structures under hundreds of load cases. Through examples using combinations of various materials, we demonstrate that the proposed topology optimization frameworks with the aforementioned update scheme and randomized algorithm lead to design tools that not only find the optimal topology but also select the proper type and local distribution, with drastically reduced computational cost.

 

报告人简介:

张晓佳(Xiaojia Shelly Zhang)博士,伊利诺伊大学厄本纳-香槟分校土木与环境工程系、机械科学与工程系的助理教授。张晓佳博士获得伊利诺伊大学厄本纳---香槟分校的土木工程学士学位和硕士学位,获得佐治亚理工学院的博士学位。她于2019年获得了美国国家超级计算机应用中心(NCSA)的教授研究经费,并分别于2018年、2019年在佐治亚理工学院的土木工程学院和国际研究荣誉学会(Sigma Xi)获得最佳博士论文奖,2019年获得了ASCE的土木工程教育优秀奖。她的研究重点是探索拓扑优化、随机规划和增材制造技术,以开发韧性、智能、可持续和创新的工程基础设施和材料,并应用于大到高层建筑,小到材料微观结构的不同规模的研究对象中。

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