• 更多栏目

    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

    访问量:

    开通时间:..

    最后更新时间:..

    Optimal Placement of Virtual Masses for Structural Damage Identification

    点击次数:

    论文类型:期刊论文

    第一作者:Hou, Jilin

    通讯作者:Hou, JL (reprint author), Dalian Univ Technol, Dept Civil Engn, Dalian 116024, Peoples R China.; Hou, JL (reprint author), Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian 116024, Peoples R China.

    合写作者:Li, Zhenkun,Zhang, Qingxia,Zhou, Runfang,Jankowski, Lukasz

    发表时间:2019-01-02

    发表刊物:SENSORS

    收录刊物:PubMed、EI、SCIE

    卷号:19

    期号:2

    ISSN号:1424-8220

    关键字:damage identification; sensor optimization; Virtual Distortion Method (VDM); Particle Swarm Optimization (PSO) algorithm; sensitivity

    摘要:Adding virtual masses to a structure is an efficient way to generate a large number of natural frequencies for damage identification. The influence of a virtual mass can be expressed by Virtual Distortion Method (VDM) using the response measured by a sensor at the involved point. The proper placement of the virtual masses can improve the accuracy of damage identification, therefore the problem of their optimal placement is studied in this paper. Firstly, the damage sensitivity matrix of the structure with added virtual masses is built. The Volumetric Maximum Criterion of the sensitivity matrix is established to ensure the mutual independence of measurement points for the optimization of mass placement. Secondly, a method of sensitivity analysis and error analysis is proposed to determine the values of the virtual masses, and then an improved version of the Particle Swarm Optimization (PSO) algorithm is proposed for placement optimization of the virtual masses. Finally, the optimized placement is used to identify the damage of structures. The effectiveness of the proposed method is verified by a numerical simulation of a simply supported beam structure and a truss structure.