多孔矩形六面体超声变幅器设计与仿真分析

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (19) : 211-217.

论文

多孔矩形六面体超声变幅器设计与仿真分析

韩光超1,3 孙莹1 孙明2 李艳云1

作者信息 +

Designing and simulating analysis of porous rectangular blocky ultrasonic horn

Han Guangchao1 Sun Ying1 Sun Ming2 Li Yanyun1

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文章历史 +

摘要

矩形六面体超声变幅器具有丰富的谐振频率有利于实现工件的辅助超声振动，但需要对矩形六面体结构进行优化设计，通过在矩形六面体内设置圆柱形孔使其振动特性满足工件辅助超声振动的要求。采用表观弹性法设计矩形六面体辐射面的基本尺寸，利用有限元方法研究圆柱形孔高度、数量和直径对矩形六面体超声谐振特性和辐射面振幅的影响规律。结果表明，在尺寸为137.3×121.2×40mm的矩形六面体中均匀分布9×9个直径为 7mm的竖直圆柱形通孔时，工作频率为20kHz，可在辐射面中心区域可获得均匀的Z向位移，适合负载工件实现辅助的垂直超声振动。

Abstract

It is useful for getting the auxiliary ultrasonic vibration of workpiece by using rectangular blocky ultrasonic horn，which has abundant resonant frequency. But the structure of the ultrasonic horn should be optimized designed by distributing cylindrical holes to make the coupled vibration characteristic satisfy the requirement of the auxiliary ultrasonic vibration. The apparent elasticity method was adopted to design the basic dimension of the rectangular block’s radiant surface. The FEM method was used to study the influence of height, number and diameter of the cylindrical holes on the ultrasonic vibration characteristics of rectangular blocky ultrasonic horn and the vibration amplitude of the radiant surface. According to the results, the redesigned dimension of the blocky horn was 137.3×121.2×40mm, in which the cylindrical holes were uniform distributed with the number of 9×9 and the diameter with 7mm. The working frequency of the horn was 20 kHz and it could get uniform vibration amplitude along Z direction in center of the radiant surface, which was suitable for loading workpiece to realize assisted vertical ultrasonic vibration.

导出引用

韩光超; 孙莹孙明李艳云. 多孔矩形六面体超声变幅器设计与仿真分析[J]. 振动与冲击, 2014, 33(19): 211-217

Han Guangchao Sun Ying Sun Ming Li Yanyun. Designing and simulating analysis of porous rectangular blocky ultrasonic horn[J]. Journal of Vibration and Shock, 2014, 33(19): 211-217