作　　者： ; ; ; ; ;

机构地区： 大连理工大学机械工程学院精密与特种加工教育部重点实验室

出　　处： 《纳米技术与精密工程》 2009年第3期279-284,共6页

摘　　要： 基于经典压电学理论,分析了外电场作用下多次压电效应的产生与压电体所处边界条件的关系,阐述了其产生过程,并推导出二次正、三次逆压电效应的输出结果与外加电场的输入、输出关系.利用有限元软件ANSYS的耦合场分析功能计算压电陶瓷在准静态场中一次逆、二次正、三次逆压电效应产生的位移或电压值.在外电场作用下对PZT-5叠堆进行了多次压电效应的实验研究,实验结果证明了二次正、三次逆压电效应的存在,且其产生与压电体所处边界条件密切相关.由仿真和实验数据可知,二次正、三次逆压电效应产生的电压和位移与外加电压也具有线性关系,进一步验证了理论分析的正确性. Based on the theory of classical piezoelectricity, the relationship between the generations of multiple piezoelectric effect under applied electric field and boundary conditions was analyzed. The generating process of multiple piezoelectric effect was elaborated and the formulas of secondary direct and tertiary converse piezoelectric effect were deduced. The displacement or voltage generated by primary converse, secondary direct and tertiary converse piezoelectric effect were calculated using coupled-field analysis function in the finite element analysis software ANSYS. Experiments of multiple piezoelectric effect under applied electric field were performed through PZT-5 stack. The experimental result verifies the existence of multiple piezoelectric effect. Experimental data show that voltage and displacement generated by secondary direct and tertiary converse piezoelectric effects respectively have linear relationship with the applied voltage. The simulation and experimental results both prove the accuracy of the theoretical analysis.

关 键 词： 多次压电效应 边界条件 叠堆 解耦

领　　域： [电气工程] [化学工程]