弯曲振动下压电陶瓷复合圆盘的可靠性分析

摘要/Abstract

摘要：

为加快压电陶瓷复合圆盘结构参数的确定中所做的正交试验进程,研究了基于可靠性分析的Monte Carlo法,对压电喷嘴-挡板结构中盘弯曲振动下的压电陶瓷复合圆盘参数进行选定,利用ANSYS软件的概率设计系统分析非确定性输入参数对结构性能的影响。分析结果表明,喷嘴-挡板结构对压电陶瓷半径R_-1敏感性最大,其次为铜电极厚度T_-2,二者影响均为负值,说明它们与喷嘴-挡板的结构性能成反比,而压电陶瓷厚度T_-1影响是正值,表明它与喷嘴-挡板结构性能成正比,并且得出三者之间定量关系为R_-1>T_-2>T_-1。研究结果为加快正交试验进程,提高试验准确性提供了依据。

关键词: 压电陶瓷, 复合圆盘结构, 可靠性分析, 蒙特卡洛法, ANSYS

Abstract:

In order to speed up the process of the orthogonal test for determining structure parameters of piezoceramics composite plate.Based on the Monte Carlo methods of reliability analysis,the determination of parameters of piezoceramics composite under the bending vibration model in the piezoelectric nozzles-flapper structure was studied.The probability design system in the ANSYS software was applied to calculate the impact of the non-deterministic input parameters on the structural properties.The ANSYS analysis results show that the largest sensitivity on the nozzle-flapper structure is the radius R_-1 of piezoelectric ceramic and then followed by the copper electrode thickness T_-2.The both impacts are negative.It indicates that they have the inverse relation to the structural properties of the nozzle-flapper.While the influence of the thickness T_-1 of the piezoelectric ceramic is positive.It indicates that it has the proportional relation to the nozzle-flapper performance.And the quantitative relationship among the three parameters is R_-1>T_-2>T_-1.The study results provide a basis for speeding up the process of the orthogonal test and improving test accuracy.

Key words: piezoceramics, composite plate, reliability analysis, monte carlo methods, ANSYS

中图分类号:

TH703

周志国, 卢江跃. 弯曲振动下压电陶瓷复合圆盘的可靠性分析[J]. 吉林大学学报(工学版), 2013, 43(增刊1): 138-142.

ZHOU Zhi-guo, LU Jiang-yue. Reliability Analysis of piezoceramics composite plate under bending vibration model[J]. 吉林大学学报(工学版), 2013, 43(增刊1): 138-142.

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