超声振动减摩性能的实验研究及理论分析
首发时间:2004-03-30
摘要:超声波振动减摩技术是具有现代特色的利用超声振动现象的边缘技术科学。其关键问题是超声振动减摩性能的研究。本文以超声减摩的核心构件压电振子为研究对象,在测量压电振子基本参数和辐射端面振幅的基础上测量压电振子振动时辐射端面与特定的工作表面间的摩擦系数随辐射端面振幅的变化规律;并通过有限元法计算压电振子的振动模态,分析超声振动的减摩机理,以便进行适当的结构设计,利用超声振动的减摩性能制造出超声波悬浮轴承。研究证明超声振动具有良好的减摩性能,压电振子处于纵向振动模态时减摩效果最好。
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Experiment Study and Theory Analysis on Anti-friction Capability of ultrasonic vibration
Abstract:The anti-friction technology of ultrasonic vibration is a frontier of modern science and technology, and the pivotal problem of the technology is study about the influence of the ultrasonic vibration on frictional properties. In this paper, experiments was made on the basic parameter of piezoelectric ceramic actuator that is the essential part of the anti-friction mechanism, and the influences of amplitude on the friction coefficient was discussed. We also analyzed the vibration mode of the anti-friction actuator using FEM, as well as the theory of anti-friction of ultrasonic vibration. The conclusion expressed that ultrasonic vibration had a good anti-friction performance and the vertical ultrasonic vibration of piezoelectric ceramic actuator had the best effect of anti-friction.
Keywords: ultrasonic vibration piezoelectric ceramic actuator anti-friction friction coefficient
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