Oblique and Herringbone Buckling Analysis of Steel Strip by Spline FEM  

作　　者：QIN Jian ZHANG Qing-dong HUANG Ke-fu 

机构地区：[1]College of Engineering, Peking University, Beijing 100871, China [2]Mechanical Engineering School,University of Science and Technology Beijing, Beijing 100083, China

出　　处：《Journal of Iron and Steel Research International》2011年第9期21-26,共6页

基　　金：Item Sponsored by National Natural Science Foundation of China(5107531,50675021)

摘　　要：The tilted waves in steel strip during rolling and leveling of sheet metal can be classified into two different types of buckling, oblique and herringbone buckling, respectively. Numerical considerations of oblique and herringbone buckling phenomena are dealt with by the spline finite element method （FEM）. It is pointed out that the shear stress due to residual strains caused by the rolling process or applied non-uniform loading is the main reason of oblique and herringbone buckle. According to the analysis of stress distribution in plane, the appropriate initial strain patterns are adopted and the corresponding buckling modes are calculated by the spline FEM. The developed numerical model provides an estimation of buckling critical load and wave configuration.The tilted waves in steel strip during rolling and leveling of sheet metal can be classified into two different types of buckling, oblique and herringbone buckling, respectively. Numerical considerations of oblique and herringbone buckling phenomena are dealt with by the spline finite element method （FEM）. It is pointed out that the shear stress due to residual strains caused by the rolling process or applied non-uniform loading is the main reason of oblique and herringbone buckle. According to the analysis of stress distribution in plane, the appropriate initial strain patterns are adopted and the corresponding buckling modes are calculated by the spline FEM. The developed numerical model provides an estimation of buckling critical load and wave configuration.

关 键 词：steel strip spline FEM initial strain oblique buckling herringbone buckling 

分 类 号：TU33[建筑科学—结构工程] TU323