摘要
在铣削模型二维等效简化的基础上,对高速切削仿真的关键技术进行了研究,用J-C模型建立工件材料模型,用剪切失效准则实现切屑和工件分离,切屑和刀具的接触摩擦模型采用修正的库仑摩擦定律,在ABAQUS软件中实现了对45钢的高速铣削仿真,对切削力和切屑温度场、应力场的仿真结果进行了分析,验证了有限元模型的合理性。
Based on effective simplification of two-dimensional high-speed milling, some key technologies of high-speed simulation were discussed. Johnson-Cook plasticity model was adopted as workpiece material model. Shear failure criterion was used to separate chips from workpiece. Modified Coulomb friction law was used to define the interaction between tool rake face and chip. The simulation of high-speed milling in steel 45 was achieved in ABAQUS. The finite element model was proved to be reasonable by analyzing cutting forces and temperature and stress which were results of simulation.
出处
《现代制造工程》
CSCD
2008年第8期45-47,共3页
Modern Manufacturing Engineering
关键词
高速铣削
J—C模型
剪切失效
有限元
High-speed milling process
Johnson-Cook model
Shear failure
Finite element
