Damage Detection Using Expanded Dynamic Residuals
Damage Detection Using Expanded Dynamic Residuals
复制标题
使用扩展动态残差进行损伤检测
DOI：
10.1115/1.1410932
复制
发表时间：
1998
影响因子：
1.7
通讯作者：
M. Kaouk
中科院分区：
文献类型：
--
作者：
D. Zimmerman;Hyoung M. Kim;T. Bartkowicz;M. Kaouk
本文提出了一种利用有限元模型和损伤前后测量的模态特性来检测结构损伤位置的算法。特别是，提出了一种算法，解决了不完全测量问题的一个方面，即在比有限元模型建模的空间自由度更少的情况下测量振型信息。在NASA 8舱实验台上对该算法的性能进行了评估。结果表明，该方法在结构检测有限的情况下具有很好的识别损伤的前景。同样的方法也可用于模型相关性工作，以帮助选择要估计的物理参数。
In this work, an algorithm for detecting the location of damage in a structure using a finite element model and pre- and post-damage measured modal properties is presented. In particular, an algorithm which addresses one aspect of the incomplete measurement problem, namely the measurement of mode shape information at fewer spatial degrees of freedom than that modeled in the finite element model, is presented. The performance of the algorithm is evaluated using the NASA 8-bay experimental test bed. The results indicate that the proposed approach holds great promise for identifying damage when structural instrumentation is limited. The same approach can also be used in model correlation efforts to aid in the selection of physical parameters to be estimated.