石英晶体板高频振动的三维有限元分析  

Three-dimensional Finite Element Analysis for High Frequency Vibrations of Quartz Crystal Plate

作　　者：吴荣兴[1,2] 李继亮[2] 于兰珍[1,2] 王骥[2] 

机构地区：[1]宁波职业技术学院建筑工程系,浙江宁波315800 [2]宁波大学机械与力学学院,浙江宁波315211

出　　处：《压电与声光》2014年第5期821-824,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(10932004);浙江省教育厅高校科研基金资助项目(Y201327293);浙江省重中之重学科开放基金资助项目(zj1202);宁波职业技术学院青年博士创新基金资助项目(2013001)

摘　　要：通过建立石英晶体板的三维模型,运用有限元分析软件ANSYS获得了石英晶体板厚度剪切振动的振动频率和位移云图。验证了数值计算结果的收敛性并提出了避免振动模态强烈耦合的石英晶体板最佳长厚比的选取方法。模型分析过程中发现,六面体网格比四面体网格易观察到石英晶体板的厚度剪切振动。The vibration frequency and displacement shapes ol thmtcness-snear vibrations ot quartz crystal plate were obtained by establishing three-dimensional model of quartz crystal plate and using the finite element software ANSYS. The convergence of numerical results was verified and the selection method of optimal length/thickness of quartz crystal plate was proposed for avoiding strong coupling of vibration modes. The hexahedron mesh was more easily to find the thickness-shear vibrations of quartz crystal plate compared with tetrahedron mesh during modeling.

关 键 词：石英晶体谐振器 板 有限元法 厚度剪切振动 频率 位移 

分 类 号：TN752.2[电子电信—电路与系统] TP12[自动化与计算机技术—控制理论与控制工程]