超精密切削SiCp/Al复合材料有限元仿真研究
2019-03-14
作者：夏晓东1，唐迪2，王业甫3，杨凯4，王世杰1
单位：1沈阳工业大学；2南京军区南京总医院博士后科研工作站；3南京理工大学；4中国人民解放军陆军航空兵学院
摘要：针对超精密切削SiCp/Al复合材料加工时表面质量不高的问题，利用ABAQUS有限元分析软件建立三维仿真模型来动态模拟切削表面形成过程。分析了SiC颗粒破碎过程，研究工件表面形成机理；通过比对不同切削深度下的加工表面形貌，分析了刀具相对颗粒位置的变化对表面形貌的影响。结果表明：SiC颗粒存在轻微破损、破裂、断裂现象，加工表面出现空穴、凹坑、划痕三种不同类型的加工缺陷。
关键词：超精密切削；SiCp/Al复合材料；表面形貌；加工缺陷
中图分类号：TG506；TH161文献标志码：ADOI：10.3969/j.issn.1000-7008.2019.03.010
Finite Element Simulation Study on Ultraprecision Cutting
Process of SiCp/Al Composites
Xia Xiaodong，Tang Di，Wang Yefu，Yang Kai，Wang Shijie
Abstract:Regarding the problem of the low machined surface quality for ultraprecision cutting of SiCp/Al composites，a threedimensional simulation model is established by using the ABAQUS explicit to simulate the formation process of cutting surface dynamically.The crushing process of the SiC particle is analyzed to investigate the formation mechanism of the machined surface.By comparing with the machined surface morphologies under different depths of cut，the influence of the change of the relative position between the particle and the cutting tool on the surface morphology is analyzed.The simulation results show that the SiC particles are slightly damaged，cracked，and fractured.Three different types of machined defects，such as holes，pits，and scratches，appear on the machined surface.
Keywords:ultraprecisioncutting；SiCp/Al composites；surface morphology；machined defect