Damage localization and severity estimate for three-dimensional frame structures
Damage localization and severity estimate for three-dimensional frame structures
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DOI：
10.1016/j.jsv.2006.08.042
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发表时间：
2007-04
影响因子：
4.7
通讯作者：
Huajun Li;H. Fang;Sau-Lon James Hu
中科院分区：
文献类型：
--
作者：
Huajun Li;H. Fang;Sau-Lon James Hu
本文提出了一种基于交叉模态应变能（CMSE）的三维框架结构损伤定位和损伤程度估计方法。虽然传统的模态应变能方法必须比较基线（分析）和受损（测量）结构的相同模式之间的模态信息，CMSE方法不需要这样的约束。此外，CMSE方法不要求分析和测量模式在尺度上一致，或被归一化。本文基于有限元模型生成的合成数据对三维五层框架结构进行了数值研究，在单损伤和多损伤情况下均获得了良好的结果。
This paper newly develops a method for the damage localization and severity estimate for three-dimensional frame structures based on the employment of the cross modal strain energy (CMSE). While traditional modal strain energy methods must compare the modal information between the same mode for the baseline (analytical) and damaged (measured) structures, no such constraint is required for the CMSE method. Additionally, the CMSE method does not require the analytical and measured modes to be consistent in scale, or to be normalized. Numerical studies in this paper are conducted for three-dimensional five-story frame structures based on synthetic data generated from finite element models, and excellent results are obtained for both single-damage and multiple-damage scenarios.