摘要
推导了工字形等截面(双轴对称等截面和单轴对称等截面)悬臂横梁的弯扭失稳问题的解析解,与有限元程序ANSYS得到的数据进行对比,验证了推导解析公式的有效性。研究结果表明:对于双轴对称工字形等截面悬臂横梁,解析公式与ANSYS数值分析结果吻合较好,对于单轴对称截面则相对误差较大,分析了产生误差的原因。
Through the analytical analysis of flexural-torsional instability problem of I-shaped constant-section（double symmetrical constant section and mono-symmetrical constant section） cantilever horizontal beam,the effectiveness of the formulas deduced by author is verified.The results show that,the formulas agree well with the ANSYS results for I-shaped double symmetrical constant section cantilever horizontal beam,but have big relative error for mono-symmetrical constant section.The error generation causes are analyzed.
出处
《建材世界》
2010年第4期64-66,共3页
The World of Building Materials
关键词
双轴对称
单轴对称
稳定
弯扭失稳
临界荷载
double symmetrical
mono-symmetrical
stability
flexural-torsional buckling
critical load
