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    王博

    • 教授     博士生导师   硕士生导师
    • 主要任职:党委常委、副校长,科学技术研究院院长
    • 其他任职:工业装备结构分析国家重点实验室副主任
    • 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:工程力学. 计算力学
    • 办公地点:工程力学系系楼304房间
    • 联系方式:办公电话: 0411-84706608; 手机: 壹叁玖肆贰捌伍玖捌伍伍
    • 电子邮箱:wangbo@dlut.edu.cn

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    Numerical-based smeared stiffener method for global buckling analysis of grid-stiffened composite cylindrical shells

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    论文类型:期刊论文

    第一作者:Wang, Bo

    通讯作者:Hao, P (reprint author), Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dept Engn Mech, Dalian 116024, Peoples R China.

    合写作者:Tian, Kuo,Hao, Peng,Zheng, Yanbing,Ma, Yunlong,Wang, Jiebing

    发表时间:2016-09-15

    发表刊物:COMPOSITE STRUCTURES

    收录刊物:SCIE、EI、Scopus

    卷号:152

    页面范围:807-815

    ISSN号:0263-8223

    关键字:Buckling; Stiffened shells; Asymptotic homogenization method; Rayleigh-Ritz method

    摘要:With regard to future heavy-lift launch vehicles, the buckling analysis and optimization of large-scale stiffened shells by finite element method (FEM) suffer from unbearable computational cost. In spite of the high analysis efficiency, the traditional smeared stiffener method (SSM) is still not accurate enough owing to the assumptions of analytical derivations. In this study, an effective and efficient numerical-based smeared stiffener method (NSSM) is proposed for the buckling analysis of stiffened shells. Firstly, the representative unit cell of stiffened shell is divided, and then it is equivalent using a novel numerical implementation of asymptotic homogenization (NIAH) method. The equivalent stiffness coefficients can be obtained accurately. Then, the buckling load is calculated by means of Rayleigh-Ritz method. Comparing with the prediction results of SSM and FEM, the high prediction accuracy and efficiency of NSSM are observed. Then, the effectiveness of NSSM for different loading conditions and model scales are discussed. Finally, numerical examples illustrate the high prediction accuracy and widespread applicability of NSSM for various grid-patterns, and the advantage of the rotated triangle grid-pattern in load-carrying capacity among various grid-patterns is demonstrated. (C) 2016 Elsevier Ltd. All rights reserved.