A Two-Step Approach for Structural Damage Localization and Quantification Using Static and Dynamic Response Data
A Two-Step Approach for Structural Damage Localization and Quantification Using Static and Dynamic Response Data
复制标题
使用静态和动态响应数据进行结构损伤定位和量化的两步方法
DOI：
10.1260/1369-4332.18.9.1415
复制
发表时间：
2015-08-01
影响因子：
2.6
通讯作者：
Liu, J. K.
中科院分区：
文献类型：
--
作者：
Zhu, J. J.;Li, H.;Liu, J. K.
本文提出了一种基于结构静动力耦合响应的局部损伤识别两步方法。该方法首先根据静力平衡方程计算残余力矢量，预测可疑损伤单元;在确定可疑损伤单元的基础上，采用基于响应灵敏度的模型修正方法对损伤程度进行量化。通过数值模拟，验证了该方法的有效性。该方法能够成功地识别出局部损伤，损伤程度与真实值吻合较好。仿真结果还表明，该方法对人为测量噪声不敏感。
A two-step approach based on coupled static and dynamic structural responses is proposed for local damage identification in this study. Firstly the suspicious damaged elements are predicted by calculating the residual force vector which is derived from the equation of static equilibrium. As the suspicious damaged elements are determined, a response sensitivity based model updating method is applied to quantify the damage extents. The proposed method is verified with both single and multiple damages identification from several numerical simulations. Local damages can be identified successfully from the proposed method and the damage extents are in good agreement with the true values. The results of the simulation also show that the proposed method is insensitive to the artificial measurement noise.