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
Simultaneous buckling design of stiffened shells with multiple cutouts
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论文类型:期刊论文
第一作者:Hao Peng
通讯作者:Wang, B (reprint author), Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian, Peoples R China.
合写作者:Wang Bo,Tian Kuo,Liu Hongliang,Wang Yutian,Niu Fei,Zeng Dujuan
发表时间:2017-07-03
发表刊物:ENGINEERING OPTIMIZATION
收录刊物:SCIE、EI、Scopus
卷号:49
期号:7
页面范围:1116-1132
ISSN号:0305-215X
关键字:Stiffened shell; cutouts; simultaneous buckling; curvilinear stiffener; optimization
摘要:Buckling is usually initiated from a local region near the cutout for cylindrical stiffened shells under axial compression, and then the evolution of buckling waves is governed by the combined effects of local and global stiffness, which limit the load-carrying capacity. Therefore, a simultaneous buckling pattern is crucial for improving the structural efficiency. In this study, a multi-step optimization strategy for the integrated design of near and far fields away from cutouts is proposed, and the convergence criterion of buckling optimization is improved as a deformation-based index. The numerical implementation of the asymptotic homogenization method is utilized to construct an efficient finite element model for post-buckling analysis. A 5m diameter stiffened shell in a launch vehicle demonstrates that the proposed framework can provide a simultaneous buckling design with high structural efficiency in an efficient manner. Both the buckling deformations and stress of the optimum design are more uniform compared to other optimum designs.