文献类型：期刊文献

英文题名：Experimental and numerical investigations on buckling behaviours of axially compressed cylindrical-conical-cylindrical shells at elevated temperature

作者：Liu, Fang[1,2];Niu, Tianye[3];Gong, Jian-Guo[2];Chen, Haofeng[2,4];Xuan, Fu-Zhen[2]

机构：[1]Univ Shanghai Sci & Technol, Sch Mech Engn, Shanghai 200093, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China;[3]Shanghai Marine Equipment Res Inst, Shanghai 200031, Peoples R China;[4]Univ Strathclyde, Dept Mech & Aerosp Engn, Glasgow City G1 1XJ, Scotland

年份：2023

卷号：184

外文期刊名：THIN-WALLED STRUCTURES

收录：;EI(收录号：20230413417854);WOS:【SCI-EXPANDED(收录号:WOS:000972876100001)】；

基金：The authors gratefully acknowledge the supports from the National Natural Science Foundation of China (52150710540, 51828501) , the Higher Education Discipline Innovation Project (111 Project) , China under the funding code B13020, University of Shanghai for Science and Technology, University of Strathclyde, China and East China University of Science and Technology during the course of this work.

语种：英文

外文关键词：Buckling; Cylindrical-conical-cylindrical shells; Axial compression; Experimental investigation; Numerical study

摘要：In this work, experimental and numerical studies are conducted to explore the buckling behaviours of cylindrical-conical-cylindrical assembly shells under axial compression at elevated temperature. Firstly, bucking experiments of six test specimens at 600 degrees C are carried out. Then, numerical method considering initial geometric imperfection is used to predict buckling behaviours of these assembly shells. Furthermore, the effects of key factors on buckling behaviours of cylindrical-conical-cylindrical shells are also discussed. Results indicate a good agreement between experimental data and numerical result based on the model with measured geometric imperfection, and the shell model with measured outer surface imperfection is adequate for buckling analysis. Comparatively, the buckling load predicted by the model with eigenmode imperfection is reasonably conservative compared with experimental result only when the amplitude of imperfection is close to the measured imperfection amplitude. In addition, the effects of material properties and geometry parameters, e.g., yield stress, ratio of radius to shell thickness and semi-vertex angle, on the load-carrying capacity and buckling mode of cylindrical-conical-cylindrical shells are investigated systematically. Finally, a strategy for buckling analysis of cylindrical-conical-cylindrical shells is proposed.