Finite element modelling and simulation of rnicro side cutting process
【出 处】：
【作 者】：
Jie
MENG
Feng
CHEN
You-qing
DING
College
of
Mechanical
and
Power
Engineering
Chongqing
University
of
Science
and
Technology
Chongqing
401331
China
CNNC
Nuclear
Power
Operation
Ma
【摘 要】This paper presented a 2D finite element model of AISI 4340 for micro side cutting. Johnson-Cook con-stitutive model and Johnson-Cook shear failure model are combined to simulate a complete side cutting cycle forone flute rotation. The flow stress which is calculated from Johnson-Cook constitutive model is smaller if the sizeeffect is neglected. Therefore, the strain gradient plasticity model is developed. The chip formation, von Misesstress and temperature fields are predicted. Compare to the Johnson-Cook constitutive model, simulation resultsshow that size effect exists in the micro side cutting process and the strain gradient plasticity model can describe itwell. Finally, the flow stress from the finite element simulation is compared with theoretical calculation results,which is validated the correctness of finite element model.
相关热词搜索： Johnson-Cook CONSTITUTIVE model STRAIN GRADIENT PLASTICITY model AISI 4340 Micro SIDE cutting
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