弯曲振动圆盘几何尺寸与振动特性关系的研究

对超声珩磨声学系统中弯曲振动圆盘的振动特性进行了试验研究，结果表明，振动圆盘振幅随厚度的减小而增大。并且当圆盘为薄圆盘(厚度半径比≤1/5)时，圆盘振动为弯曲振动，能够获得良好的振动效果，最大振幅可达20.5μm，存在增幅特性，同时可以看出波节圆数目和大小。当圆盘直径不变时，共振频率随圆盘厚度的减小而降低，圆盘在不同频率下被激发共振。所获得的相应最大振幅值，对弯曲振动圆盘的尺寸设计和应用具有一定的参考价值。

Study on the Experiments of the Relationship Between the Geometric Dimensions of Flexural Vibration Disk and It''''s Vibration Characteristics

The vibration characteristics of flexural vibration disk in ultrasonic toning system were studied systematically through experiments.The results show that th e amplitude of vibration disk increases with the reducing of it's thickness,and when the disk is thin disk(the ratio between the thickness and radius is less than or e-qual to one fifths),the vibration of disk is flexural vibration,an d the good vibration effect can be ob-tained.And the maximal amplitude can rea ch20.5um,at the same time,the number of the wave crests and size can be o btained.There exist amplifying characteristics in the vibra tion of the disk.W hen the diameter of disk is not changed,the resonant frequency will decrease w ith the reducing of the thickness of disk.The resonance can be excited at diffe rent frequencies.The corresponding maximal amplitude value pro vides cer-tain reference value for the dimensional design and application of flexural vibration disk.