面向飞机颤振模型设计的结构拓扑优化研究

中国机械工程 ›› 2010, Vol. 21 ›› Issue (05): 585-588,594.

面向飞机颤振模型设计的结构拓扑优化研究

杨睿1;杨绪印1;张颖颖1;任莉2

1.大连理工大学,大连，116024

2.大连水产学院,大连,116024

出版日期:2010-03-10 发布日期:2010-03-22
基金资助:
国家自然科学基金青年基金资助项目(50605004)；辽宁省博士启动基金资助项目(20061064)
National Natural Science Funds for Distinguished Young Scholars（No. 50605004）

Topology Optimization for Structural Design of Airplane Flutter Model

Yang Rui1;Yang Xuyin1;Zhang Yingying1;Ren Li2

1.Dalian University of Technology,Dalian,Liaoning,116024

2.Dalian Fisheries University,Dalian,Liaoning,116024

Online:2010-03-10 Published:2010-03-22
Supported by:
National Natural Science Funds for Distinguished Young Scholars（No. 50605004）

摘要/Abstract

摘要：

飞机颤振模型的结构设计是一个以固有频率为目标、兼具结构相似要求的反求问题。针对拓扑优化方法只能得到不规则孔洞而无法满足模型相似要求的难题，提出了一种含规则几何约束的结构拓扑优化方法，并将基于单元材料特性更改的方法与双向渐进结构法相结合，利用敏度再分配方法，实现了以频率为目标、具有规则孔洞的结构拓扑优化，且有效抑制了优化中的棋盘格式和局部模态现象。某飞机机身壁板的优化算例证明，该方法能设计出具有给定固有频率的结构，并使之与原机身具有一定的结构相似性。

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关键词:

拓扑优化, 颤振模型；结构相似；双向渐进结构法

Abstract:

Optimal structural design was presented for airplane flutter models.It is a reverse problem for proper natural frequencies as well as structural similarity.The difficulty lies in the achievement of structural similarity,as the holes in optimal structures are irregular.Therefore,regular geometrical constraints were introduced.Then,BESO combined with element’s properties changing method(EPCM) and sensitivity

redistribution method(SRM) were used.An optimal structure with regular holes was obtained.Checkerboard pattern and local mode were significantly suppressed.An example of an airplane construction panel was provided.It is showed that the proposed approach is feasible for the design of structures with given natural frequencies.In addition,the optimal structure is similar to the original fuselage.

Key words:

topology optimization, flutter model, structural similarity, bi-directional evolutionary structural optimization(BESO)

中图分类号:

TH122

杨睿, 杨绪印, 张颖颖, 任莉.

面向飞机颤振模型设计的结构拓扑优化研究

[J]. 中国机械工程, 2010, 21(05): 585-588,594.

YANG Rui, YANG Xu-Yi, ZHANG Ying-Ying, LIN Chi.

Topology Optimization for Structural Design of Airplane Flutter Model

[J]. China Mechanical Engineering, 2010, 21(05): 585-588,594.

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