Indexed by:期刊论文
Date of Publication:2015-01-01
Journal:工程力学
Included Journals:Scopus、EI、PKU、ISTIC、CSCD
Volume:32
Issue:8
Page Number:223
ISSN No.:1000-4750
Key Words:多级加筋柱壳; 轴压; 压溃; 缺陷敏感性; 重型运载火箭
Abstract:该文基于非线性显式动力学方法进行后屈曲分析,获得了四种加筋柱壳(均匀加筋柱壳、矩形截面双向多级加筋柱壳、T型截面单向和双向多级加筋柱壳)整个后屈
曲过程的轴压位移-载荷曲线,并以模态缺陷为例,比较了四者的缺陷敏感性,结果显示T型截面双向多级加筋柱壳呈现出显著的低缺陷敏感性和较强的可设计性。
该文还将缺陷敏感性分析结果与对应的完善结构后压溃稳定平衡路径进行了对比,发现两者一定程度上的趋势一致性。这表明对完善结构运用显式动力学方法进行单
次后屈曲分析,即可同时获得其承载能力和缺陷敏感性,大大减少计及缺陷敏感性结构设计的计算量。最后,该文进一步构造了面向低缺陷敏感性的T型截面多级加
筋柱壳优化模型,算例表明该方法可以高效地获得可靠性更强的优化解。
Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions:Professor
Other Post:工程力学系主任
Gender:Male
Alma Mater:Dalian University of Technology
Degree:Doctoral Degree
School/Department:Department of Engineering Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment
Discipline:Solid Mechanics. Aerospace Mechanics and Engineering. Computational Mechanics. Engineering Mechanics
Contact Information:haopeng@dlut.edu.cn
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