摘要
以简支梁、三维框架结构、Benchmark框架模型、海洋平台结构为分析对象,选择柔度差值曲率法、模态应变能法、改进后的模态应变能法和交叉模型交叉模态方法(CMCM)等4种结构损伤定位指标,对分析对象的抗噪声干扰能力进行对比分析。分析结果表明,改进后的模态应变能法和CMCM方法对于结构损伤定位均有较好的抗噪性。
The simply supported beam, three-dimensional five-story frame, Benchmark framework model and offshore platform structure were taken as analysis objects, to compare the ability to suppress noise interference among the flexibility difference curvature method, the modal strain energy methods, and CMCM method. The results showed that the modified modal strain energy method and CMCM method have a good anti-noise property in damage location identification for both one-dimensional structure and frame structure.
出处
《船海工程》
2012年第1期73-76,共4页
Ship & Ocean Engineering
基金
863计划(2008AA092701-5)
关键词
模态噪声
损伤识别
模态参数
模态应变能
柔度差值曲率
noisy modal
damage detection
modal parameters
modal strain energy
the flexibility difference curvature
