Inverse Structural Dynamics and Structural Damage Identification-(II)
2017-08-22 09:02     (点击: )

讲座题目:Inverse Structural Dynamics and Structural Damage Identification-(II)

主讲人:陈华鹏 教授英国格林威治大学

陈华鹏,男,现任英国格林威治大学(the University of Greenwich)工程与科学学院土木工程主任教授(Chair Professor),创新与智能基础设施研究中心主任。陈教授曾留学英国帝国理工大学(Imperial College London),并于1998年在英国格拉斯哥大学(the University of Glasgow)获博士学位。陈教授的主要研究领域包括结构健康监测、土木基础设施结构性能评估和维护管理等。陈教授作为项目负责人(Principal Investigator),主持了包括自然与环境研究理事会(NERC)、皇家工程院等英国研究理事会资助科研项目20余项,发表了150篇国际期刊和会议论文。

时间:826日(周六)9:00

地点:3号试验楼 5楼会议室

邀请人:土木学院 伊廷华教授

报告摘要:

The vibration-based damage identification methods show great promise, in particular in the application to remote damage identification for large engineering structures. The dynamic perturbation method overcomes some limitations in the most existing methods. Such method is based on the exact relationship between the change in stiffness due to damage in a structure and the vibration modal data of the damaged structure. Such method can directly adopt the incomplete modal measurements for damage identification, without requiring model reduction or mode shape expansion techniques. Only limited number of vibration modal data measurements with uncertainty are sufficient to identify correctly structural damage, which is potentially useful for large engineering structures. In the inverse predictions of structural damage using the method, the system of governing equations may be ill-conditioned. Thus, a regularisation algorithm can be implemented in the method to provide stable solutions for the damage indicators. The dynamic perturbation method presents a great potential to applications for effective damage identification in complex structures.

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