Research and Simulation of the Bending Effect of Piezoelectric Quartz under Uniformly Distributed Load
The bending effect of a piezoelectric quartz beam under uniformly distributed load is studied. First according to the anisotropic elasticity, the differential equation in the form of plane stress function is obtained, and then the bending stress components are calculated. By the piezoelectric equation the polarization is obtained. By means of the electrostatic theory in the presence of matter the bound surface charge and bound volume charge are computed, and then by the Finite Element Method the distribution of the electric field in the piezoelectric body is simulated. Based on theoretical analysis of the bound charge distribution, the measuring electrodes are effectively disposed on the surfaces of the piezoelectric quartz beam, and then a specially designed experimental is performed. Finally in order to obtain the maximum of bending charge sensitivity, the method of optimization cutting angle of quartz bar is applied. Both theoretical calculation and experimental results show that the bending effect exists, and the polar charge is linear with the external force.Undoubtedly this research will provide the theoretical and experimental foundation for the piezoelectric theory of quartz crystal based on deformation analysis.
Piezoelectricity Bending Effect Polarization Sensitivity
Gao Changyin Li Wanquan
Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou, Henan, 450015, China Chongqing Three Gorges University, Chongqing, Chongqing, 404000, China
国际会议
长沙
英文
2181-2184
2010-03-13（万方平台首次上网日期，不代表论文的发表时间）