薄壁杆件约束扭转强度可靠度计算的有限元法  

A Finite Element Method for the Restrained Torsion Reliability Computation of the Thin-Walled Beam

作　　者：杜伦平[1] 周海浪[1] 曾庆元[2] 

机构地区：[1]中南大学交通运输工程学院,湖南长沙410075 [2]中南大学土木建筑学院,湖南长沙410075

出　　处：《长沙铁道学院学报》2003年第1期24-27,共4页Journal of Changsha Railway University

摘　　要：根据变截面薄壁杆件约束扭转的特点,提出用一维随机有限元法来计算其扭转强度的可靠度.它能够计算翘曲约束引起的二次剪应力流,具有计算工作量小、精度高的优点.According to the characteristic of the restrained torsion of the thinwalled beam with varied crosssections, a stochastic finite element method for its torsional strength reliability computation is developed in this paper.This method takes into account the effect of secondary shear flow resulting from warping restraint.It has the advantages of little computation and high accuracy.

关 键 词：薄壁杆件 约束扭转 随机有限元 可靠度 

分 类 号：TU338[建筑科学—结构工程]