稳态热传导下基于多相材料的一体化设计

doi:10.7527/S1000-6893.2015.0214

固体力学与飞行器总体设计

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稳态热传导下基于多相材料的一体化设计

贾娇¹, 龙凯², 程伟¹

1. 北京航空航天大学航空科学与工程学院, 北京 100083;
2. 华北电力大学新能源电力系统国家重点实验室, 北京 102206

收稿日期:2015-04-09 修回日期:2015-07-30 出版日期:2016-04-15 发布日期:2015-08-28
通讯作者: 龙凯,Tel.:010-61772051 E-mail:longkai1978@163.com E-mail:longkai1978@163.com
作者简介:贾娇,女,博士研究生。主要研究方向:结构优化与结构动力学。Tel:010-82317115 E-mail:jiajiao_2012@163.com;龙凯,男,博士,副教授。主要研究方向:风力机组结构仿真分析与优化设计。Tel:010-61772051 E-mail:longkai1978@163.com;程伟,男,博士,教授,博士生导师。主要研究方向:结构动力学、微振动测试及分析、参数辨识。Tel:010-82313563 E-mail:cheng_wei@buaa.edu.cn
基金资助:
国家自然科学基金(11202078);北京市自然科学基金(3143025);工程车辆轻量化与可靠性技术湖南省高校重点实验室(长沙理工大学)开放基金(2013KFJJ01);中央高校基本科研业务费专项资金(2014ZD16)

Concurrent topology optimization based on multiphase materials under steady thermal conduction

JIA Jiao¹, LONG Kai², CHENG Wei¹

1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100083, China;
2. State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China

Received:2015-04-09 Revised:2015-07-30 Online:2016-04-15 Published:2015-08-28
Supported by:
National Natural Science Foundation of China (11202078);Beijing Natural Science Foundation (3143025);The Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle,Education Department of Hunan Province (Changsha University of Science&Technology)(2013KFJJ01);Fundamental Research Funds for the Central Universities (2014ZD16)

摘要/Abstract

摘要：

提出一种基于多相多孔材料的一体化模型。模型以结构散热弱度最小为目标,以结构体积比与材料微结构质量为约束。引入独立的宏观设计变量和微观相设计变量,通过单元相密度建立两类变量间的联系;基于对等混合材料插值模型建立单元相密度与热传导系数间的惩罚关系;推导得到目标函数灵敏度表达式。求解偏微分方程实现单元散热弱度过滤,消除棋盘格及网格依赖性现象。通过二维数值算例讨论并分析了材料特性、热载荷、体积比约束以及质量约束对一体化优化结果的影响。数值实验结果表明,该建模方法在多相材料/结构一体化稳态热传导优化设计中具有可行性和有效性。

关键词: 拓扑优化, 一体化优化, 多相材料, 稳态热传导, 体积约束, 质量约束

Abstract:

Based on multiphase materials, a concurrent optimization model of macrostructures and porous microstructures is proposed. In this model, the minimized heat compliance is taken as objective function. Structural volume fraction and microstructure mass are taken as constraints. Macro design variables and micro phase design variables are introduced into macrostructures and microstructures independently, and are integrated into one system with elemental phase density. The punishment relationship between elemental phase density and thermal conductive coefficient is built through uniform interpolation model, and the sensitivity of objective function is deduced. To eliminate the checkerboard pattern and mesh-dependence problem, the heat compliance is filtered using a partial differential equation. The effects of material characteristics, heat loads, volume fraction and microstructure mass constraints are discussed with 2D problems. The numerical results indicate that the proposed method is reliable and efficient to the concurrent topology optimization of macrostructures and porous microstructures based on multiphase materials.

Key words: topology optimization, concurrent optimization, multiphase materials, steady thermal conduction, volume constraint, mass constraint

中图分类号:

贾娇, 龙凯, 程伟. 稳态热传导下基于多相材料的一体化设计[J]. 航空学报, 2016, 37(4): 1218-1227.

JIA Jiao, LONG Kai, CHENG Wei. Concurrent topology optimization based on multiphase materials under steady thermal conduction[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(4): 1218-1227.

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E-mail：hkxb@buaa.edu.cn

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稳态热传导下基于多相材料的一体化设计

Concurrent topology optimization based on multiphase materials under steady thermal conduction

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