基于节点密度插值的多材料柔顺机构拓扑优化

doi:10.3901/JME.2021.15.053

机械工程学报 ›› 2021, Vol. 57 ›› Issue (15): 53-61.doi: 10.3901/JME.2021.15.053

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基于节点密度插值的多材料柔顺机构拓扑优化

朱本亮^1,2, 张宪民¹, 李海¹, 王日鑫¹, 刘敏³, 李昊²

1. 华南理工大学广东省精密装备与制造技术重点实验室广东 510640;
2. 京都大学工学研究科机械工程与科学系京都 606-8501 日本;
3. 华东交通大学机电与车辆工程学院南昌 330013

收稿日期:2020-08-02 修回日期:2020-11-25 出版日期:2021-08-05 发布日期:2021-11-03
通讯作者: 张宪民(通信作者),男,1964年出生,博士,教授,博士研究生导师。主要研究方向为柔顺机构理论、精密装备及控制理论。E-mail:zhangxm@scut.edu.cn
作者简介:朱本亮,男,1986年出生,博士,副教授。主要研究方向为柔顺机构拓扑优化及微纳操作。E-mail:meblzhu@scut.edu.cn;李海,男,1990年出生,博士。主要研究方向为柔顺机构,精密定位,视觉精密测量。E-mail:lihai@scut.edu.cn;王日鑫,男,1994年出生,博士研究生。主要研究方向为柔顺机构拓扑优化理论和方法。E-mail:wangrixin239@gmail.com;刘敏,男,1992年出生,博士,讲师。主要研究方向为柔顺机构拓扑优化理论和方法。E-mail:lmin2016@foxmail.com;李昊,男,1994年出生,博士研究生。主要研究方向为结构优化,拓扑优化,湍流。E-mail:lihao71862b@sina.com
基金资助:
国家自然科学基金（51975216，51905176）和江西省基金（20192BAB216021）资助项目。

Topology Optimization of Multi-material Compliant Mechanisms Using Node-density Interpolation Scheme

ZHU Benliang^1,2, ZHANG Xianmin¹, LI Hai¹, WANG Rixin¹, LIU Min³, LI Hao²

1. Guangdong Key Lab. of Precision Equipment and Manufacturing Technology, South China University of Technology, Guangzhou 510640;
2. Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University, Kyoto 606-8501 Japan;
3. School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013

Received:2020-08-02 Revised:2020-11-25 Online:2021-08-05 Published:2021-11-03

摘要/Abstract

摘要： 基于弹簧模型和节点密度插值的固体各向同性材料惩罚模型（Solid isotropic material with penalization，SIMP）方法，给出了一种用于多材料柔顺机构拓扑优化设计的分层优化方法。首先，以输出端位移最大化为目标以各种材料相应的体积占比为约束，建立了多材料柔顺机构拓扑优化模型；其次，采用节点密度插值，构造了设计区域内具有C⁰连续性的密度场函数，给出了目标函数和约束的敏度解析表达式，使用过滤半径自适应迭代的敏度过滤方案，消除了节点密度插值法中的层化现象；再次，给出了一种分层优化策略用于求解多材料柔顺机构拓扑优化问题；最后，分别用典型的二维和三维柔顺机构拓扑优化问题验证了所提出方法的有效性，并分析了设计参数对优化结果的影响机制。

关键词: 柔顺机构, 多材料, 拓扑优化, 节点插值, 密度法

Abstract: Based on the spring model and node density interpolation SIMP (Solid Isotropic Material with Penalization) method, a layered optimization strategy for topology optimization of multi-material compliant mechanism is given. Firstly, with the objective of maximizing the displacement at the output port and constraining the corresponding volume fractions of the each considered material, a model for the topology optimization of multi-material compliant mechanism is established. Secondly, the C⁰ continuity of the density field in the design area is constructed by using node density interpolation. The analytical expressions of sensitivities of the objective function and constraints are given. A sensitivity filtering scheme with adaptive filtering radius is employed to eliminate the stratification phenomenon in the node density interpolation method. Then, a laid optimization strategy is given to solve the topology optimization problem of a multi-material compliant mechanism. Finally, the typical two-dimensional and three-dimensional compliant mechanisms topology optimization problems are used to verify the effectiveness of the proposed method, and the influence of design parameters on the optimization results was analyzed.

Key words: compliant mechanisms, multi-material, topology optimization, node density interpolation, density method

中图分类号:

TB112
TB114

朱本亮, 张宪民, 李海, 王日鑫, 刘敏, 李昊. 基于节点密度插值的多材料柔顺机构拓扑优化[J]. 机械工程学报, 2021, 57(15): 53-61.

ZHU Benliang, ZHANG Xianmin, LI Hai, WANG Rixin, LIU Min, LI Hao. Topology Optimization of Multi-material Compliant Mechanisms Using Node-density Interpolation Scheme[J]. Journal of Mechanical Engineering, 2021, 57(15): 53-61.

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基于节点密度插值的多材料柔顺机构拓扑优化

Topology Optimization of Multi-material Compliant Mechanisms Using Node-density Interpolation Scheme

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