Analysis and Detection of Nonlinear Polarization in Torsion of Piezoelectric Cylinder
Author(s): WU Jiantong, SUN Baoyuan
Pages: 85-88
Year: 2001 Issue: 1
Journal: PIEZOELECRICS & ACOUSTOOPTICS
Keyword: 扭转; 压电效应; 非线性极化; 等效束缚电荷;
Abstract: The stresses caused by mechanical torque on piezoeletric bar arededuced by using energy method in elastic theory and the accompanying nonlinear polarization in the piezoelectric body is analysed.In electrodynamics point of view equivalent bound volume charges will accumulate in the piezoelectric body in addition to the bound surface charges considering the effect of polarization gradient.The distribution of the electric field intensity in the piezoelectric body is obstained by finite element method.The measuring electrodes are effectively disposed on the surfaces of the piezoelectric body based on the analysis of boundary condition of conductors in electric field.The investigation in this article would establish the basis for torque measuring technique on single piezoelectric body.
Pages: 85-88
Year: 2001 Issue: 1
Journal: PIEZOELECRICS & ACOUSTOOPTICS
Keyword: 扭转; 压电效应; 非线性极化; 等效束缚电荷;
Abstract: The stresses caused by mechanical torque on piezoeletric bar arededuced by using energy method in elastic theory and the accompanying nonlinear polarization in the piezoelectric body is analysed.In electrodynamics point of view equivalent bound volume charges will accumulate in the piezoelectric body in addition to the bound surface charges considering the effect of polarization gradient.The distribution of the electric field intensity in the piezoelectric body is obstained by finite element method.The measuring electrodes are effectively disposed on the surfaces of the piezoelectric body based on the analysis of boundary condition of conductors in electric field.The investigation in this article would establish the basis for torque measuring technique on single piezoelectric body.
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