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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2015-01-01

发表刊物：ADVANCES IN STRUCTURAL ENGINEERING

收录刊物：Scopus、EI、SCIE

卷号：18

期号：1

页面范围：137-153

ISSN号：1369-4332

关键字：structural health monitoring (SHM); damage identification; substructuring; frequency domain; boundary

摘要：This paper proposes a frequency-domain method of substructure identification for local health monitoring using substructure isolation method (SIM). The first key step of SIM is the numerical construction of the isolated substructure, which is a virtual and independent structure that has the same physical parameters as the real substructure. Damage identification and local monitoring can be then performed using the responses of the simple isolated substructure and any of the classical methods aimed originally at global structural analysis. This paper extends the SIM to frequency domain, which allows the computational efficiency of the method to be significantly increased in comparison to time domain. The mass-spring numerical model is used to introduce the method. Two aluminum beams with the same substructure are then used in experimental verification. In both cases the method performs efficiently and accurately.