摘要
针对单元模态应变能法诊断结构损伤时需要完备模态的缺点 ,本文提出仅用部分低阶模态确定结构损伤位置和程度的方法。通过考虑高阶模态的近似贡献 ,能够得到较满意的诊断精度 ,具有实际应用价值。
An improved structural damage quantification algorithm is developed in this article. It can be proposed to detect structural damage by only using a part of lower modes. Numerical experimental results illustrate that this method is simple and has satisfactory precision.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2002年第2期92-94,共3页
Journal of the China Railway Society
关键词
结构振动
模态法
模态应变能
损伤诊断
structural vibration
modal method
modal strain energy
damage detection
