开口薄壁曲梁的非线性屈曲  

NONLINEAR BUCKLING OF THE OPEN THIN-WALLED CURVED BEAMS

作　　者：魏德敏[1] 江波 

机构地区：[1]华南理工大学建筑学院,广州510640 [2]广西百色市建设与规划委员会,广西百色533000

出　　处：《力学与实践》2007年第6期27-31,43,共6页Mechanics in Engineering

摘　　要：用有限元法分析了开口薄壁圆弧曲梁的非线性弹性屈曲,并通过对有限元计算结果的非线性回归分析,给出了开口薄壁曲梁极限承载力的实用估算公式.The stability of thin-walled structures is an important problem in civil engineering. In this paper, the nonlinear elastic buckling of the open thin-walled curved-beam is analyzed by using the finite element method. Through the nonlinear regression computation for a great number of Finite-Element results, a practical and simple formula is obtained, which can be used to estimate the ultimate bearing capacity of the open thin-walled curved beams.

关 键 词：开口薄壁构件 曲梁 非线性屈曲 极限承载力 

分 类 号：TU394[建筑科学—结构工程]