摘要
为了准确模拟高温合金GH4169的切削过程,深入研究了GH4169的有限元建模技术,如有限元模型的建立、材料本构模型、切屑分离准则及接触摩擦模型等。采用Johnson-Cook本构关系模型对GH4169的加工过程进行二维正交切削有限元模拟,获得了不同刀具前角下的切屑形态和切削力曲线图,进一步分析了刀具前角对切屑形态和切削力变化规律的影响,为镍基高温合金的实际切削加工中刀具的选择提供了参考。
In order to accurately simulate the cutting process of GH4169,the finite element modeling technology of GH4169 including the key technologies such as finite element model,material constitutive model,chip separation criterion and contact friction model are studied. The GH4169 machining process by two-dimensional orthogonal cutting with JohnsonCook constitutive model is simulated to obtain the chip shape and cutting force graphs under different tool rake angles. The influence of the rake angle on the chip shape and cutting force is analyzed to provide a theoretical basis for the choice of tool in actual machining of Ni-base superalloy.
出处
《工具技术》
北大核心
2017年第10期80-83,共4页
Tool Engineering
