Effect of weld reinforcement on axial plastic buckling of welded steel cylindrical shells

作     者：Chu-lin YU Zhi-ping CHEN Ji WANG Shun-juan YAN Li-cai YANG 

作者机构：Institute of Process EquipmentZhejiang UniversityHangzhou 310027China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2012年第13卷第2期

页      面：79-90页

核心收录：

学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National High-Tech R&D (863) Program of China (No. 2009AA044803) the National Key Technologies R&D Program of China (No. 2011BAK06B02) the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20090101110051), China 

主　　题：Cylindrical shells Axial buckling Plastic Weld Reinforcement Geometric imperfections 

摘      要：The effect of weld reinforcement on axial plastic buckling of welded steel cylindrical shells is investigated through experimental and numerical buckling analysis using six welded steel cylindrical shell specimens. The relationship between the amplitude of weld reinforcement and the axial plastic buckling critical load is explored. The effect of the material yield strength and the number of circumferential welds on the axial plastic buckling is studied. Results show that circumferential weld reinforcement represents a severe imperfect form of axially compressed welded steel cylindrical shells and the axial plastic buckling critical load decreases with the increment of the mean amplitude of circumferential weld reinforcement. The material yield strength and the number of circumferential welds are found to have no significant effect on buckling waveforms; however, the axial plastic buckling critical load can be decreased to some extent with the increase of the number of circumferential welds.