基于有限元法的结构损伤同伦延拓识别法  

Homotopy Algorithms of Structure's Damage Identification Based on FEM

作　　者：张开鹏[1] 吴代华[1] 李卓球[1] 

机构地区：[1]武汉理工大学理学院,武汉430070

出　　处：《武汉理工大学学报》2004年第10期31-34,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金 (5 0 2 380 4 0)

摘　　要：在对工程结构损伤识别问题进行研究的基础上 ,提出了基于有限元方法和同伦延拓法的损伤识别方法 ,并采用该方法对损伤简支梁进行了损伤程度的识别。数值实验结果表明该方法对初始值敏感度低、收敛性好 。A new method was researched for structure's damage identification on the basis of researching the damage problem of engineering structure. Based on the combination of finite element method and homotopy continuation algorithms, it identified the damage grade of beam with different kinds of damages. The identification results proved that the new method more efficient and accurate than traditional iterative methods.

关 键 词：有限元法 同伦延拓法 损伤识别 振型 

分 类 号：TU312[建筑科学—结构工程]