噪声与振动控制2019，Vol.39Issue(2)：7-13,7.DOI:10.3969/j.issn.1006-1355.2019.02.002
基于频响函数的结构损伤识别模型修正方法
Structural Damage Identification using Model Updating Method based on Frequency Response Functions
摘要
Abstract
For the problem of incomplete measurement data in model updating, a new model updating method based on frequency response function and structural damage identification is proposed. Firstly, the sensitivity equation of the frequency response function is established by perturbation analysis, and the frequency range is selected according to the sensitivity of structural response to parameter changes and the effect of damping on the amplitude. Then, the frequency response functions at the unmeasured nodes of the damaged structure are reconstructed using the frequency response function of the intact structure and the measured inherent frequency of the damaged structure. Finally, the optimal sensor placement method suitable to model updating is studied to determine the sensor number and locations so as to provide the required frequency response data for the model updating. The numerical model test shows that using the frequency response data provided by a small number of sensors can identify the location and the severity of the damage, and obtain the updated results consistent with the actual structural parameters.关键词
振动与波/损伤识别/模型修正/传感器优化布置/频响函数Key words
vibration and wave/ damage identification/ model updating/ optimal sensor placement/ frequency response function分类
通用工业技术引用本文复制引用
殷红,马静静,董小圆,彭珍瑞,白钰..基于频响函数的结构损伤识别模型修正方法[J].噪声与振动控制,2019,39(2):7-13,7.基金项目
国家自然科学基金资助项目(51768035,61463028) （51768035,61463028）
甘肃省高校协同创新团队资助项目(2018C-12) （2018C-12）
