径向极化压电陶瓷管建模与仿真.pdfVIP

径向极化压电陶瓷管建模与仿真 1,2 1 1,2 1 1 1,2 杨明明 汪焰恩 魏生民 毛海龙 潘飞龙 李鹏林 (1. 西北工业大学机电学院 陕西 西安 710072 2. 西北工业大学现代设计与集成制造教育部重点实验室 陕西 西安 710072) 摘要：本文基于平面应变假设，推导了径向极化压电陶瓷管在外电场作用下形变的计算公式。作为挤压式喷嘴的执行器，径 向极化压电陶瓷管在与极化方向一致的外电场的作用下主要发生径向变形。利用有限元分析软件 Ansys14.0 ，对模型进行有 限元仿真。利用这两种方法计算不同结构尺寸的压电陶瓷管在100V 电压作用下的内壁位移，两种方法计算结果之差小于5 ％， 结果的一致性，验证了理论公式的正确性。该理论分析模型可预测挤压式压电喷嘴在外电场作用下的响应，指导喷嘴结构设 计，降低喷嘴设计成本，提高喷嘴结构设计可靠性和设计效率。 关键词：压电陶瓷管 理论分析 径向位移 中图分类号：TN384 Modeling and Simulation of Radial Polarized Piezo Tube YANG Mingming1 WANG Yanen1 WEI Shengmin1,2 MAO Hailong1 PAN Feilong1 LI Penglin1 (1. School of Mechatronics, Northwestern Polytechnical University, Xi’an 710072, China 2. The Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education,Northwestern Polytechnical University, Xi’an 710072, China) Abstract ：Based on plane strain hypothesis, this paper derived the radial deformation formula of radial polarized piezo ceramic cylinder excited by radial electric field. Radial polarized piezo ceramic cylinders, which are actuator of squeeze-mode piezoelectric inkjet printer, perform mainly radial deformation under radial external electric field. Radial displacement of the piezo tube is derived from the piezoelectric equations and electrostatic field distribution in the piezo ceramic tube. Finite element (FE) simulation is also carried out using the software of Ansys14.0.Rdial displacements of different piezo tubes’ inner surface are analyzed using the two methods. The difference between results of the analytic formula and FE simulation is less than 5%. Consistent results of two different methods verify qualification of the derived form