【摘要】 以曲率模态和柔度曲率为识别参数,针对具有多损伤区域的悬臂梁结构进行了损伤仿真分析。结果表明可以应用曲率模态法和柔度曲率法对梁类结构进行多损伤识别。柔度曲率法既有较高的灵敏度又避免了使用原结构的模态参数,这对没有原始结构模态参数的损伤识别技术显得尤为重要,而且仅需要低阶模态信息即可获得很好的识别效果。更多还原

【Abstract】 Based on the curvature mode and the flexibility curvature, the analysis of the damage imitation calculation to one cantilever beam with multiple damaged locations was presented. The results show that the multiple damaged locations of the beam can be diagnosed effectively by means of curvature mode and flexibility curvature. The flexibility curvature method is not only highly-sensitive to damage, but also able to identify the damage locations without original modal parameters. Furthermore, the damage can be detected with satisfactory precision by a few lower modes.更多还原