基于响应差传递率矩阵的结构损失识别与定位方法

doi:10.1007/s12204-022-2528-0

J Shanghai Jiaotong Univ Sci ›› 2024, Vol. 29 ›› Issue (6): 1126-1138.doi: 10.1007/s12204-022-2528-0

基于响应差传递率矩阵的结构损失识别与定位方法

王增伟，丁雷

（中国科学院上海技术物理研究所；红外探测与成像技术重点实验室，上海 200083）

收稿日期:2021-03-08 接受日期:2021-10-12 出版日期:2024-11-28 发布日期:2024-11-28

Structural Damage Detection and Localization Using Response Difference Transmissibility

WANG Zengwei (王增伟), DING Lei^∗ (丁雷)

(Shanghai Institute of Technical Physics; Key Laboratory of Infrared System Detection and Imaging Technology, Chinese Academy of Sciences, Shanghai 200083, China)

Received:2021-03-08 Accepted:2021-10-12 Online:2024-11-28 Published:2024-11-28

摘要/Abstract

摘要： 提出一种利用响应差传递率矩阵对结构损伤进行识别与定位的新方法。响应差传递率矩阵可将原始系统的动态响应与系统产生损伤后的动态响应进行关联。首先研究了响应差传递率矩阵的不变特性；在此基础上，建立了结构损伤量化指标，并通过数值案例对其有效性进行了验证。最后，利用有限元仿真案例和实际物理系统对所提方法的实施流程进行了展示，并对其可行性进行了验证。

关键词: 损伤识别, 损伤定位, 传递率矩阵, 机械振动

Abstract: In this paper, a novel method is proposed for structural damage detection and localization. The key of the proposed method is the use of the response difference transmissibility (RDT) for damage localization. The RDT is defined to relate response differences of the system to be evaluated and those of the original system. The invariance properties of RDT are also investigated. Based on this, a damage indicator is proposed, and the benefits are verified by a numerical example. Finally, the proposed method is illustrated and validated by finite element simulations and experimental case studies.

中图分类号:

王增伟, 丁雷. 基于响应差传递率矩阵的结构损失识别与定位方法[J]. J Shanghai Jiaotong Univ Sci, 2024, 29(6): 1126-1138.

WANG Zengwei (王增伟), DING Lei^∗ (丁雷). Structural Damage Detection and Localization Using Response Difference Transmissibility[J]. J Shanghai Jiaotong Univ Sci, 2024, 29(6): 1126-1138.

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基于响应差传递率矩阵的结构损失识别与定位方法

Structural Damage Detection and Localization Using Response Difference Transmissibility

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