PLASTIC DEFORMATION CAPACITY OF COLD PRESS-FORMED SHS COLUMNS DETERMINED BY LOCAL BUCKLING AND FRACTURE

Abstract

 This paper presents plastic deformation capacity determined by fracture or local buckling of the cold press-formed SHS columns by the cyclic loading test and finite element analysis with varying width-thickness ratio, shear span ratio, loading direction and ratio of axial force to axial yield strength. As a result, it is pointed out that the crack at the end of column occurs when width-thickness ratio and shear span ratio are small. And also it is notable that the possibility range of parameters with initiation of the crack is spread if loading direction is 45 degree.