基于有限条法的薄壁构件畸变屈曲分析  

Distortional Buckling Analysis of Thin-walled Members Based on Finite Strip Method

作　　者：姚永红 韩三祥 YAO Yonghong;HAN Sanxiang(Anhui University of Science and Technology,Huainan,Anhui 232001,China)

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《九江学院学报（自然科学版）》2023年第3期38-41,共4页Journal of Jiujiang University：Natural Science Edition

基　　金：住房与城乡建设部科学技术项目(编号2014-K2-033)的成果之一。

摘　　要：为验证有限条方法编写的Channelsteeltypic(简称CSTFSM)在计算冷弯薄壁卷边槽钢柱弹性临界畸变屈曲应力时的可靠性,文章选取76个不同截面形式的槽钢,分别采用有限元法和CSTFSM对其进行分析,比较两种方法计算的临界畸变屈曲应力与临界畸变屈曲半波长度。对比结果表明:CSTFSM计算的临界畸变屈曲应力与有限元方法计算的屈曲应力比较吻合,能够准确快速的计算各种截面形式的临界畸变屈曲应力和临界畸变屈曲半波长度,可以应用于冷弯薄壁型钢构件的弹性畸变屈曲分析。In order to verify the reliability of Channelsteeltypic(CSTFSM)based on the finite strip method in calculating the elastic critical distortional buckling stress of cold-formed thin-walled lipped channel steel columns,76 channel steels with different cross-sections were selected and analyzed by finite element method and CSTFSM respectively.The critical distortional buckling stress and the critical distortional buckling half-wave length calculated by the two methods were compared.The comparison results showed that the critical distortional buckling stress calculated by CSTFSM was in good agreement with the buckling stress calculated by finite element method.It could accurately and quickly calculate the critical distortional buckling stress and critical distortional buckling half-wave length of various cross-section forms,and could be applied to the elastic distortional buckling analysis of cold-formed thin-walled steel.

关 键 词：冷弯薄壁卷边槽钢 弹性屈曲分析 有限元方法 经典有限条法 

分 类 号：TU392.1[建筑科学—结构工程]