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    侯吉林

    • 副教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:哈尔滨工业大学
    • 学位:博士
    • 所在单位:土木工程系
    • 学科:结构工程
    • 办公地点:土木工程学院4号楼310
    • 电子邮箱:houjilin@dlut.edu.cn

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    约束子结构损伤识别的时序方法研究与试验

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    第一作者:侯吉林

    通讯作者:欧进萍,Lukasz Jankowski

    发表时间:2013-01-01

    发表刊物:工程力学

    所属单位:建设工程学部

    卷号:30

    期号:4

    页面范围:129-135

    ISSN号:1000-4750

    摘要:For huge complex structures, it is difficult to obtain enough
       information which is required necessarily in their global monitoring.
       Aiming at this problem, a Substructure Isolation Method (SIM) is
       proposed for local damage identification. An isolated substructure is a
       virtual and independent structure, which is separated from a global
       structure by adding virtual supports on the substructure boundary to
       zero the substructure boundary responses. Correspondingly the interior
       responses of the isolated substructure are constructed and used to
       identify the local substructure damage equivalently. In order to reveal
       the essence of the Substructure Isolation Method and unify its basic
       concept, the way of arranging sub-time series is improved according to
       the SIM method based on impulse response, that is, sub-time series are
       extracted section by section, and then are arrayed into a Toeplitz
       matrix. In this way, it not only unifies the expression of SIM based on
       local time series and that based on impulse response, but also
       integrates the basic concept of SIM. An experiment of a cantilever beam
       is used to validate the efficiency and the practical application of this
       method. Both the substructure isolation and damage identification are
       performed successfully using local measured responses.

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