摘要
基于严格按照有限变形理论和数学分析方式推导出来的空间曲梁单元增量应变——增量位移关系式,本文给出了空间曲梁几何非线性有限元法分析的U.L列式新方法.两个数值算例结果说明了这种方法的正确性和有效性.
<ABSTRACT>Based upon the strain-displacement relationship for a curved element of spa-tial beam in 3-D deformations derived by the method of mathematical analy-sis and according to the theory of large elastic-plastic deformation,this pa-per presents a new updated Lagrangian formulation of the spatial beam ele-ment for a purely geometric nonlinear analysis. Two numerical examples are given to demonstrate the validity and effectiveness of the formulation.
出处
《长沙铁道学院学报》
CSCD
1998年第3期1-5,共5页
Journal of Changsha Railway University
基金
铁道部项目
关键词
空间曲梁
几何非线性
有限元
增量位移关系
curved element of spatial beam
geornetrlc nonlinear
finlte element
