Simulation and Process Study on the Rotary Ultrasonic Vibration Trepanning Drilling of GFRP

doi:10.3901/JME.2023.23.391

Abstract

Abstract: Glass fiber reinforced resin matrix composites (Glass fiber reinforced plastic, GFRP) have the characteristics of high specific strength and large specific modulus, and are widely used in aerospace, shipbuilding and automobile manufacturing and other fields. Aiming at the defects such as delamination and tearing that are prone to occur in the hole-making process of GFRP composites, the theoretical and experimental researches on grinding and hole-making are carried out by using the rotary ultrasonic vibration hole-making method. The kinematics of single abrasive particles in rotary ultrasonic vibration casing machining were analyzed. Based on Hashin failure criterion, the most representative 0° and 90° angle lay-up glass fibers of GFRP composites were ground by conventional and rotary ultrasonic vibration. Finite element simulation research of casing drilling; compared with conventional machining, ultrasonic vibration machining makes abrasive particles have periodic dynamic impact grinding effect, changes the material removal method, and reduces the grinding force. The results show that: the shaft of ultrasonic vibration machining The maximum drop in the axial force can reach 20.1%, and at the same time, the delamination defect at the outlet is effectively suppressed, the fiber fracture on the surface of the hole wall is smooth and smooth, and the quality of the hole making is effectively improved.

Key words: rotary ultrasonic machining, diamond trepanning bit, finite element analysis, GFRP, hole quality

CLC Number:

ZHENG Lei, SUN Xiaohan, Lü Dongming, LIU Ziwen, ZHU Zhuozhi, DONG Xianglong, WEI Wendong. Simulation and Process Study on the Rotary Ultrasonic Vibration Trepanning Drilling of GFRP[J]. Journal of Mechanical Engineering, 2023, 59(23): 391-400.

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