关键词: 损伤识别, 柔度矩阵, 模态柔度曲率差, 灰并联

Abstract:

The damages of a substructure were identificated by the proposed identification method. Numerical simulation examples indicate that the damage location and severity in structures, with single damage or multiple ones, can be detected efficiently by GMFCD through only a few of the lower order modal parameters. Compared to the aforementioned flexibility indicators, such as the change in flexibility, flexibility differential curvature method, the effectiveness and advantages of GMFCD are shown.

Key words: damage identification, flexibility matrix, modal flexibility curvature difference(MFCD), gray relation