Simulation and Analysis on High Speed Cutting Variable Hardness Workpieces of AISI H13 Die Steel
A new dynamic constitutive model considering the hardness effect is established on the basis of Johnson-Cook constitutive model, which can be applied for a wide range of material hardness.The orthogonal cutting processes where the initial hardness values of the workpiece of AISI H13 Die Steel change continuously is developed by utilizing general commercial software.The influences of different machining processes on chip morphology, cutting force and cutting temperature are analyzed in high speed cutting.The result shows that chip morphology is affected by the material hardness.The degree of chip aliasing and the shear angle are increased as workpiece hardness values become large.It is easy to produce serrated chip when workpiece hardness values change from large to small in cutting of variable hardness workpieces.The results of this paper provide a theoretical basis for the process development of difficult-to-cut material in high speed cutting.
Variable hardness workpieces Hardness-based dynamic constitutive model High speed cutting Finite element simulation
Fulin Wang Qi Tao Luoqiong Xiao
College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
国际会议
长沙
英文
162-167
2016-11-04（万方平台首次上网日期，不代表论文的发表时间）