微振动输送中圆盘型压电振子的动力学分析-包装工程.PDF

第37卷第7期 包装工程 2016年4月 PACKAGINGENGINEERING 13 微振动输送中圆盘型压电振子的动力学分析 姜荔，孙智慧，晏祖根 （哈尔滨商业大学，哈尔滨150028） 摘要：目目的研究压电陶瓷振动给料器的双晶片压电振子，求出其力学表达式，为振动给料器的双压电的 晶片的优化设计奠定理论基础。方方法以螺旋式压电振动给料器的圆盘型压电振子为例，对圆盘型压法 电双晶片进行动力学分析，建立振动模型及动力学方程，对激振力进行求解。结结果果 运用 Rayleigh-Ritz法推导出在简支边界条件下，双压电晶片振子的弯曲振动的共振频率以及激振力表达 式，得出最大误差出现在160V处，理论计算与实验验证数据的误差为10%左右，有限元分析与实验验 证数据的误差为5%左右。结结论论 通过实验可以看出在实际应用中，要综合考虑其电压输入与压电陶 瓷层的变形程度，选择最佳的电能输入，才能使压电双晶片获得最大的激励位移。 关键词：压电振子；Rayleigh-Ritz法；共振频率；有限元分析 中图分类号：TB486 文献标识码：A 文章编号：1001-3563（2016）07-0013-04 Dynamics Analysis of Disc Type Piezoelectric Vibrator during Micro Vibration Transportation JIANGLi ，SUNZhi-hui，YANZu-gen （Harbin University of Commerce ，Harbin 150028 ，China） ABSTRACT ：This experiment aimed to investigate the bimorph piezoelectric vibrator of piezoelectric ceramic vibration feeder and propose the mechanical expression so as to lay a theoretical foundation for optimization design. Taking disk piezoelectric oscillator of spiral type piezoelectric vibration feeder as an example, the dynamic analysis was carried out on the disc-type double piezoelectric wafer, the vibration model and the dynamic equation were established for solving vibration force. Using Rayleigh Ritz method, the resonant frequency of the bending vibration of bimorph oscillator and the exciting force expressions were deduced under the simply supported boundary conditions. It was concluded that the maximum error appeared at 160 V, the error between the theoretical calculation and the experimen