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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (1): 1-7    DOI: 10.1631/jzus.A071544
Civil and Mechanical Engineering     
Modeling of sensor function for piezoelectric bender elements
Yan-guo ZHOU, Yun-min CHEN, Hao-jiang DING, Wei-qiu CHEN
Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310027, China
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Abstract  An analytical sandwich beam model for piezoelectric bender elements is derived based on the first-order shear deformation theory (FSDT), which assumes a single rotation angle for the whole cross-section and a quadratic distribution for coupled electric potential in piezoelectric layers. Shear coefficient is introduced to correct the effect of transverse shear strain on shear force and the electric displacement integration. Static and free vibration analyses of simply-supported bender elements are carried out for the sensor function. The results illustrate the high accuracy of the present model compared with the exact 2D solutions.

Key words： Bender elements      Piezoelectric      Sensor      Sandwich beam      Shear coefficient     
Received: 10 October 2007      Published: 21 November 2007
CLC:  O34  
  TU4  
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Yan-guo ZHOU
Yun-min CHEN
Hao-jiang DING
Wei-qiu CHEN
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Yan-guo ZHOU, Yun-min CHEN, Hao-jiang DING, Wei-qiu CHEN. Modeling of sensor function for piezoelectric bender elements. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(1): 1-7.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A071544     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I1/1

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