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《Technical Acoustics》 2018-05
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Simulation on strength optimization design of ultrasonic torsional vibration milling of titanium alloy

FENG Zhi-bin;TONG Jing-lin;School of Mechanical and Power Engineering, Henan Polytechnic University;  
In view of the difficulty to process the titanium alloy possessing great specific strength and low thermal conductivity, a two-dimensional ultrasonic torsional vibration milling model of titanium alloy is established by using Abaqus software. The strength optimization design of titanium alloy is carried out by using John-cook criterion, ALE mesh method and boundary conditions. Based on the periodic separation principle of knife and cuttings, the relationships of the contact rate with rotation speed, vibration frequency and ultrasonic amplitude are established. Then, the strength optimization design is simulated by using the single factor method of changing cutting speed, frequency and amplitude in turn. The results show that The cutting force and temperature increase with the increase of cutting speed;As the amplitude increases, the cutting force decreases while the temperature increases;Frequency change has little effect on both cutting force and temperature. The conclusions are as follows: in the given parameter range, the factors of affecting cutting force are the amplitude, the cutting speed and the frequency in order, and the factors of affecting temperature are the cutting speed, the amplitude and the frequency in order.
【Fund】: 河南省自然科学基金(162300410120)资助项目
【CateGory Index】: TG54;TG663
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