基于柔度曲率矩阵的结构损伤识别法

基于损伤结构模态的柔度矩阵,应用差分方法计算柔度曲率矩阵,从中找到各列最大值,作为检测结构损伤指(?)的新方法.该方法无需原始结构的信息,只需损伤结构少数低阶的模态参数就可以进行悬臂梁、固端梁、简支梁以及连续梁等多种结构形式的损伤识别,既能识别单个损伤的存在,也能识别多个损伤的位置,该方法定位准确、适用面广、识别精度高、能定性反映损伤程度.

Flexibility Curvature Matrix Method Based on Mode in the Damage Detection of Structures

The maximum of each column of flexibility curvature matrix constructed from flexibility matrix is presented as a new indicator F_(CM) for damage detection.The numerical simulations indicate that the damage location in structures can be identified by F_(CM) for cantilever beams,fixed supported beams,simply supported beams,continuous beams and so on without baseline modal parameters.Not only simple damage but also multiple ones can be detected with satisfactory precision by F_(CM) using only a few of the lowe...