弯曲振动模态下近场悬浮力问题  

Solution on Near-Field Acoustic Levitation Force in Flexural Mode Based on ALE Methods

作　　者：贾兵[1] 陈超[1] 赵淳生[1] 

机构地区：[1]南京航空航天大学机械结构强度与振动国家重点实验室,江苏南京210016

出　　处：《压电与声光》2013年第1期80-84,共5页Piezoelectrics & Acoustooptics

基　　金：国家重点基础研究发展计划基金资助项目项目(“九七三”计划)(2011CB707602);国家自然科学基金资助项目(11174149);江苏省普通高校研究生科研创新计划基金资助项目(CX10B_092Z)

摘　　要：为解决弯曲振动模态下求解近场悬浮力问题时表面振幅不一致的情况及忽略惯性力影响的问题,该文提出对在任意拉格朗日-欧拉法(ALE)坐标描述下求解挤压膜中的流体控制方程的方法。利用该方法得出悬浮高度与辐射压力的关系,之后对不同质量的悬浮重物进行悬浮实验,将数据结果与理论曲线进行对比,验证了该文中理论和数值分析方法的合理性。In order to solving the question of neglecting inertia force and the inconformity of vibration amplitudes in solving nearfield acoustic levitation in the flexural mode, a new method to solve the fluid control equations of squeezing film in Arbitrary LagrangeEuler （ALE） coordinate is presented in this paper. Using this method,the re lationship between levitatied amplitude and radiation pressure is calculated. After that, the levitation experiment is carried out with several different weights,and a comparison between the obtained data and the theoretic curves has been performed. The result shows that the mathematical formula is reasonable for calculating the force of ultrasonic levitation.

关 键 词：挤压膜 近场悬浮 运动边界 弯曲振动 

分 类 号：TM55[电气工程—电器]