现代交通技术2011，Vol.8Issue(5)：47-50,4.
基于不完备测试阵型的结构损伤识别与误差分析
Structure Damage Detection and Error Analysis Based on Incomplete Mode Shapes
段鸿杰 1张宇峰2
作者信息
- 1. 江苏省交通科学研究院长大桥梁健康检测与诊断技术交通行业重点实验室,江苏南京210017
- 2. 江苏省公路桥梁工程技术研究中心,江苏南京211112
- 折叠
摘要
Abstract
At present,most methods of damage detection assume the FEM modal degrees of freedom as same as the actual measured degrees of freedom,but the actual data measured are very limited.In order to use the measured incomplete mode shapes in damage detecting,the modal expansion technology usually be used.In this paper unmeasured modal shapes is represented by the sum of undamaged structural modal shapes and shapes changes.The complete modal shapes can be obtained by determining the shapes changes,meanwhile the residual of the modal expansion is analysed,modal contribution factor is put forward,which can be used in incomplete mode shapes expansion and damage detection.Numerical results shows the approach which using modal contribution factor expansion the incomplete mode shapes and for damage detection can increase calculation efficiency.关键词
桥梁工程/损伤识别/模态贡献因子/完备模态/模态扩阶Key words
bridge engineering/damage detection/modal contribution factor/complete modal/modal expansion分类
交通工程引用本文复制引用
段鸿杰,张宇峰..基于不完备测试阵型的结构损伤识别与误差分析[J].现代交通技术,2011,8(5):47-50,4.
