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Resonant Frequency of Cavitation Bubble in Grinding Fluid Under Ultrasonic Honing

GUO Ce;ZHU Xi-jing;WANG Jian-qing;LIU Guo-dong;School of Mechanics and Power Engineering,North University of China;Taiyuan University of Technology,Shanxi Key Laboratory of Precision Machinging;  
To reveal the resonance characteristics of cavitation bubble in the grinding fluid during ultrasonic honing,experimental observations on the grinding fluid of oilstone surface were carried out firstly using microscope VHX-600 ESO.The cavitation bubble in the resonance state was observed.Based on the bubble dynamics,the resonant frequency equation was established for cavitation bubble in the grinding fluid during ultrasonic honing.The effect of ambient bubble radius,ambient pressure,gas content and ambient temperature of water and kerosene on bubble resonant frequency in the grinding fluid was numerically simulated respectively.The coordination relationship of ultrasonic frequency and cavitation bubble resonance frequency was verified by analyzing the displacement of a cavitation bubble.The results show that the resonance cavitation bubble occurs more easily in water than in kerosene at the same conditions,which is an important reason that water can be selected in coarse honing and kerosene can be chosen in fine honing.
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