面向集中力扩散的回转曲面加筋拓扑优化方法

李增聪; 陈燕; 李红庆; 田阔; 王刚; 高峰; 王博

doi:10.7527/S1000-6893.2020.24616

航空学报 >

2021 , Vol. 42 >Issue 9: 224616 - 224616

DOI: https://doi.org/10.7527/S1000-6893.2020.24616

固体力学与飞行器总体设计

面向集中力扩散的回转曲面加筋拓扑优化方法

李增聪 ,
陈燕 ,
李红庆 ,
田阔 ,
王刚 ,
高峰 ,
王博

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1. 大连理工大学工业装备结构分析国家重点实验室工程力学系, 大连 116024;
2. 中国空间技术研究院总体设计部, 北京 100094

收稿日期: 2020-08-07

修回日期: 2020-10-28

网络出版日期: 2020-11-06

基金资助

国家自然科学基金（11902065，11825202）；中国博士后科学基金面上项目（2019M651107）；兴辽英才计划（XLYC1802020）

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Topology optimization method for concentrated force diffusion on stiffened curved shell of revolution

LI Zengcong ,
CHEN Yan ,
LI Hongqing ,
TIAN Kuo ,
WANG Gang ,
GAO Feng ,
WANG Bo

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1. Department of Engineering Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;
2. Institute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100094, China

Received date: 2020-08-07

Revised date: 2020-10-28

Online published: 2020-11-06

Supported by

National Natural Science Foundation of China (11902065, 11825202); China Postdoctoral Science Foundation Funded Project (2019M651107); Liaoning Revitalization Talents Program (XLYC1802020)

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摘要

为了提高航天器回转曲面加筋型连接结构的集中力扩散效率，需要开展回转曲面加筋集中力扩散结构设计。传统放射肋设计方法普遍依赖设计经验、难以满足集中力高效扩散需求。因此，提出一种面向集中力扩散的回转曲面加筋拓扑优化方法。第1步，建立了一种基于各向异性过滤技术的集中力扩散拓扑优化方法，保证拓扑优化结果满足回转曲面加筋制造工艺要求；第2步，提出了一种基于网格变形技术的拓扑优化结果智能重构方法，可高效准确地对回转曲面加筋拓扑优化结果进行模型自动重构。基于所提出方法，以卫星平台对接环这种典型的回转曲面加筋壳为对象开展算例研究，并将优化结果与传统放射肋设计结果进行对比。结果表明，所提出的优化方法可得到加筋构型清晰、满足回转曲面加筋制造工艺要求的优化结果，且具有集中力扩散效率高、网格质量依赖性低、拓扑特征重构高效等优点。

关键词： 集中力扩散; 回转曲面加筋壳; 拓扑优化; 各向异性过滤; 模型智能重构

本文引用格式

李增聪 , 陈燕 , 李红庆 , 田阔 , 王刚 , 高峰 , 王博 . 面向集中力扩散的回转曲面加筋拓扑优化方法[J]. 航空学报, 2021 , 42(9) : 224616 -224616 . DOI: 10.7527/S1000-6893.2020.24616

Abstract

Designing concentrated force diffusion structures on stiffened curved shells is necessary to improve the concentrated force diffusion ability of spacecraft structure connectors. The traditional radial rib design method generally depends on design experience and is difficult to satisfy the requirement of efficient concentrated force diffusion in most cases. Therefore, a topology optimization method for concentrated force diffusion on stiffened curved shells is proposed in this paper. In the first step, a topology optimization method for concentrated force diffusion is developed based on the anisotropic filtering technique to ensure that the topology optimization result satisfies the manufacturing requirement of stiffened curved shells. In the second step, an intelligent reconstruction method for the topology optimization result is proposed based on the mesh deformation technique, which can efficiently and accurately reconstruct the topology optimization result in the form of the stiffened curved shell of revolution. Based on the proposed method, a case study is conducted on the docking ring of the satellite platform, which is a typical structure of stiffened curved shell. The result of the proposed optimization method is compared with those of the traditional radial rib design method and the traditional topology optimization method by commercial software. Comparison results indicate that the proposed optimization method can obtain optimization results with a clear stiffener configuration and satisfy the manufacturing requirements of the stiffened curved shell, with the advantages of good concentration force diffusion efficiency, low dependence on mesh quality, and efficient reconstruction ability of topology features.

Key words： concentrated force diffusion; stiffened curved shell of revolution; topology optimization; anisotropic filter; intelligent model reconstruction

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