얇은 4각튜브로 된 평면프레임의 대변형해석

In this paper, a large deformation analysis of plane frame structures with the thin-walled relatangular tube is presented. In thin-walled elements the moment-rotation relationship is usually controlled by local buckling and subsequent collapse of the section, which is different in the solid beam. The moment-rotation relationship is suggeated in this paper. A finite element computer proqram is developed for the large deformation analysis of plane frame structures with the thin-walled rectanqular tube. This analytical result shows a promising agreement with the test data.