基于模态应变能的结构损伤识别研究  

STUDY ON DAMAGE IDENTIFICATION OF STRUCTURE BASED ON THE METHOD OF ELEMENT MODAL STRAIN ENERGY

作　　者：张斌[1] 赵歆冬[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《低温建筑技术》2012年第6期84-85,共2页Low Temperature Architecture Technology

摘　　要：文中应用有限元分析软件ANSYS10.0建立一个平面刚架结构模型。通过有限元模态分析获得未损伤结构与损伤结构的固有频率和振型。应用单元模态应变能法对模型进行损伤定位。结果证明这种方法对于平面刚架的损伤识别是有效的。This paper used the finite element analysis software ANSYS10. 0 to establish a model of plane truss, then got the natural frequencies and mode shapes of intact structure and the damaged struc - ture by the modal analysis. Modal parameters were applied on the damage detection method which is based on element modal strain el. Results shown this method energy, the methods are used to find out the damage location of the modwhich is used to identify damage of spatial structure was valid.

关 键 词：模态分析 损伤识别 损伤定位 模态应变能 

分 类 号：TU328[建筑科学—结构工程]