Space shape finding FE analysis for suspension bridge based on CR formulation method  

作　　者：Wang Bingjian Zhang Jinquan Yang Yun 

机构地区：[1]Research Institute of Highway Ministry of Transport, Beijing 100088, China

出　　处：《Engineering Sciences》2012年第3期60-63,共4页中国工程科学（英文版）

基　　金：National Science and Technology Support Program of China(No.2009BAG15B01);Key Programs for Science and Technology Development of Chinese Transportation Industry(No.2008-353-332-190)

摘　　要：The problem of geometric non-linearity simulation for spacial cable system was solved by introducing the truss element based on corotational coordinate (CR) system, cable structure materials and node coordinates and automatic refreshing algorithms for element internal force. And the shape-finding problem for maneuvering profile was solved with the Newton-Raphson based on energy convergence criteria with search function. This has avoided the regular truss element assumption extensively used in traditional methods and catenary elements which have difficulties in practical application because of the complicated formulas. The use of CR formulation has taken into account the stiffness outside the cable plane via a geometric stiffness matrix, realizing the 3D space analysis of a cable bridge and improving the efficiency and precision for the space geometric non-linearity analysis and cable structure, and enabling more precised simulation of geometric form finding and internal force of the large span suspension bridge main cable under construction.

关 键 词：CR formulation TRUSS cable structure material geometric non-linearity suspension bridge 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TL53[自动化与计算机技术—计算机科学与技术]