편심압축하중을 받는 차량 측면부재의 최대압괴하중

This paper describes the collapse characteristics of lateral members in automotive vehicle body under eccentric compressive load. In the former part, local buckling stress and maximum crippling load are investigated A thin-walled tube under the load is controlled by local buckling or yielding of material according to the ratio of thickness to width (t/b) of the cross section, and subsequent collapse of the section. This relationship can be divided into three regions : elastic , post-buckling and crippling. The load-displacement relationship is theoretically presented in each region by introducing the stress distribution of the cross section in the loading process. And the maximum load carrying capacity is derived in the closed form as a function of normal stress on the flange and web.