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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Professor
其他任职：工程力学系主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：固体力学. 航空航天力学与工程. 计算力学. 工程力学
联系方式：haopeng@dlut.edu.cn
电子邮箱：haopeng@dlut.edu.cn
Hybrid optimization of hierarchical stiffened shells based on smeared stiffener method and finite element method
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论文类型：期刊论文
发表时间：2014-09-01
发表刊物：THIN-WALLED STRUCTURES
收录刊物：SCIE、EI
卷号：82
页面范围：46-54
ISSN号：0263-8231
关键字：Hierarchical stiffened shell; Axial compression; Buckling; Imperfection sensitivity; Hybrid optimization
摘要：In this study, Smeared Stiffener Method (SSM) of hierarchical stiffened shells is derived to release the prediction burden of buckling loads. Then, a minimum-weight optimization formulation for hierarchical stiffened shells is developed based on SSM, attempting to demonstrate the higher lightweight potential of hierarchical stiffened shells compared to the traditional ones. Further, the main aim of this paper is to present a hybrid optimization framework of hierarchical stiffened shells including imperfection sensitivity, combining the efficiency of SSM with the accuracy of FEM, since there are currently no closed-form solutions to take imperfections into account accurately. The illustrative example demonstrates that the proposed framework has a higher optimization efficiency and global optimization capability compared to the conventional methods. (C) 2014 Elsevier Ltd. All rights reserved.