Post-buckling behavior of stiffened cylindrical shell and experimental validation under non-uniform external pressure and axial compression

被引：18
|
作者：
Wang, Bo [1 ,2 ]
Yang, Musen [1 ,2 ]
Zeng, Dujuan [3 ]
Hao, Peng [1 ,2 ]
Li, Gang [1 ,2 ]
Liu, Ye [1 ,2 ]
Tian, Kuo [1 ,2 ]
机构：
[1] Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Liaoning, Peoples R China
[2] Dalian Univ Technol, Dept Engn Mech, Key Lab Digital Twin Ind Equipment, Dalian 116023, Liaoning, Peoples R China
[3] Beijing Inst Astronaut Syst Engn, Beijing 100076, Peoples R China
来源：
THIN-WALLED STRUCTURES | 2021年 / 161卷
基金：
中国国家自然科学基金;
关键词：
Stiffened cylindrical shell; Post-buckling behavior; Non-uniform external pressure; Mode jumping; High-precision loading system; DESIGN OPTIMIZATION; KNOCKDOWN FACTORS; BUCKLING ANALYSIS; COMPOSITE CYLINDERS; THICKNESS; FRAMEWORK; FAILURE;
D O I：
10.1016/j.tws.2021.107481
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
External pressure and axial compression are common load cases for stiffened cylindrical shells in underwater structures. Once these two load cases are combined, the buckling behavior will become quite complex, especially when the external pressure is non-uniform. In this study, the influence of external pressure combined with axial compression on the post-buckling behavior of stiffened cylindrical shell is investigated. Then, a high-precision measuring system and loading system for non-uniform external pressure and axial compression is designed and constructed, and the buckling experiment of 1-m-diameter stiffened cylindrical shell under non-uniform external pressure and axial compression is carried out. The numerical results show that the proportion of axial compression is a crucial factor for the mode jumping of cylindrical shell, and it is overly conservative to evaluate the loadbearing capacity of cylindrical stiffened shell by the uniform external pressure. The comparison of experimental and numerical results demonstrates the accuracy and effectiveness of the experimental system.
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页数：12
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