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J4  2010, Vol. 44 Issue (12): 2342-2347    DOI: 10.3785/j.issn.1008-973X.2010.12.018
蔡金标1, 陈勇1, 严蔚2
1.浙江大学 建筑工程学院,浙江 杭州310058; 2.宁波大学 建筑工程与环境学院,浙江 宁波315211
Three-dimensional finite element analysis based electromechanical
impedance model and its application
CAI Jin-biao1, CHEN Yong1, YAN Wei2
1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; 2. Faculty of
Architectural, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China
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An accurate electromechanical impedance(EMI) finite element model was established for structural health monitoring, in order to check the existing structure theories for highfrequency impedance analysis and to verify the effectiveness of the damage detection method based on highfrequency electric impedance signals. The coupling interaction among piezoelectric patches, adhesive layer, and main structure was considered and the effect of adhesive layers on EMI signals was further taken into account. A threedimensional finite element model was developed to simulate this coupled structural system using the software ANSYS and the correlative experimental study was conducted. Results showed that the harmonic analysis based on the threedimensional finite element model could predict the vibration modes of the structure at high frequency, which agreed well with the experimental results, and the existing structure theories for highfrequency impedance analysis were effectively checked. Further study also showed that the EMI technique can feasibly detect small and local damages in structures. In addition, the location of structural damage can be determined through reasonable distribution of piezoelectric-ceramic patches.

出版日期: 2010-12-01
:  TU 323  


作者简介: 蔡金标(1965—),男,浙江浦江人,副教授,主要从事结构有限元分析和结构损伤监测方面研究.E-mail:
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蔡金标, 陈勇, 严蔚. 基于三维有限元分析的压电阻抗模型及其应用[J]. J4, 2010, 44(12): 2342-2347.

CAI Jin-biao, CHEN Yong, YAN Wei. Three-dimensional finite element analysis based electromechanical
impedance model and its application. J4, 2010, 44(12): 2342-2347.


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