摘要
压电振子作为压电驱动机构的核心部件,其工作状态和疲劳强度直接决定系统的工作性能和使用寿命。该文利用ANSYS软件对圆环形压电振子进行疲劳仿真分析,得到振动模态云图和最大受力点。研究不同结构尺寸参数对压电振子疲劳寿命影响,并进行双晶片与单晶片压电振子相关数据对比。结果表明,金属材料65Mn的抗疲劳性能最好,减小振子直径或增加振子厚度能较好提高其疲劳寿命,而施加电压幅值过高会降低振子的使用寿命,双晶片压电振子的疲劳寿命比单晶片压电振子疲劳寿命长。对圆环形压电振子进行了疲劳寿命实验,研究表明,选取的此批振子完全能达到使用要求。
As the core component of piezoelectric drive mechanism,the working state and fatigue strength of piezoelectric vibrator directly determine the working performance and service life of the system.In this paper,the ANSYS software is used to simulate the fatigue of the ring piezoelectric vibrator,and the cloud chart of vibration mode and the maximum stress point are obtained.The influences of different structural parameters on the fatigue life of piezoelectric vibrator are studied,and the data of bimorph and single crystal piezoelectric vibrators are compared.The results show that the metal material 65Mn has the best anti fatigue performance.Reducing the diameter of the vibrator or increasing the thickness of the vibrator can improve its fatigue life,while applying too high voltage amplitude will reduce the service life of the vibrator,and the fatigue life of the bimorph piezoelectric vibrator is longer than that of the single crystal piezoelectric vibrator.The fatigue life experiment on the ring piezoelectric vibrator is carried out.The results show that the selected batch of vibrator can fully meet the requirements of use.
作者
田晓超
王海刚
王虎
吴越
张思达
杨志刚
TIAN Xiaochao;WANG Haigang;WANG Hu;WU Yue;ZHANG Sida;YANG Zhigang(Institute of Mechanical and Vehicle Engineering,Changchun University,Changchun 130022,China;College of Mechanical and Aerospace Engineering,Jilin University,Changchun 130025,China)
出处
《压电与声光》
CAS
北大核心
2020年第5期692-696,共5页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(51705031,51405189,51875234)
吉林省科技厅优秀青年人才基金资助项目(20190103050JH)
吉林省科技厅自然科学基金资助项目(20200201063JC)。
关键词
压电振子
振动
疲劳寿命
仿真分析
piezoelectric vibrator
vibration
fatigue life
simulation analysis
