材料科学与工程学报2026，Vol.44Issue(1)：92-102,11.DOI:10.14136/j.cnki.issn1673-2812.2026.01.012
超声椭圆振动辅助SiC纳米切削机理的有限元模拟
Finite Element Simulation of Ultrasonic Elliptical Vibration Assisted SiC Nanocutting Mechanism
摘要
Abstract
Ultrasonic elliptical vibration cutting is an auxiliary cutting method proposed for difficult-to-machine materials,which has demonstrated significant advantages in the machining process of SiC materials.A finite element model of ultrasonic elliptical vibration assisted cutting was established in this paper,and the influence of ultrasonic vibration frequency and amplitude on SiC chip formation,surface creation,cutting force,and residual stress was studied.The analysis results indicated that the surface morphology of the workpiece largely depended on the motion trajectory of the diamond tool.When the vibration frequency was higher than 400 MHz,the longitudinal amplitude was less than 50 nm,and the transverse amplitude was greater than 50 nm and less than 100 nm,it was beneficial to form a smoother machining surface and improve machining quality.The average cutting force decreased with the increase of vibration frequency,but the magnitude of its decrease was continuously decreasing.Increasing both lateral and longitudinal amplitudes could reduce cutting forces and improve the machinability of SiC materials.The residual stress generated by ultrasonic elliptical vibration assisted cutting followed a"spoon shaped"trajectory.Increasing the vibration frequency and reducing the amplitude were beneficial for the formation of residual compressive stress on the workpiece surface,thereby improving the machining quality of the workpiece surface.The research conclusion has important theoretical significance and practical value for enriching the processing theory of hard,brittle and difficult-to-machine materials.关键词
碳化硅/超声椭圆振动切削/刀具轨迹/表面形貌/切削力/残余应力Key words
Silicon carbide/Ultrasonic elliptical vibration cutting/Tool trajectory/Surface morphology/Cutting force/Residual stress分类
信息技术与安全科学引用本文复制引用
刘冰,李玉莹,徐宗伟,王煜荣,张文洁,孙坷敔..超声椭圆振动辅助SiC纳米切削机理的有限元模拟[J].材料科学与工程学报,2026,44(1):92-102,11.基金项目
国家自然科学基金资助项目(51805371),国家级大学生创新创业训练计划项目(202410069006) （51805371）
