大连理工大学学报Issue(4)：526-531,6.
基于FEM-SPH耦合方法的AISI4340钢超精密切削过程仿真
Simulation research on AISI4340 steel ultra-precision cutting process based on FEM-SPH coupling method
摘要
Abstract
Numerical simulation is an important approach to metal cutting process ,but finite element method (FEM ) has some limitations and can not handle large deformation problems since it′s based on mesh .Smoothed particle hydrodynamics (SPH) is a mesh‐free method and can avoid mesh distortion and hence resolve large deformation of materials in cutting .Combining the advantages of conventional FEM with the mesh‐free method ,SPH ,a FEM‐SPH coupling model for AISI4340 steel diamond ultra‐precision cutting is established and the cutting mechanism is studied . The simulation results show that :with the inner stress increasing and reaching yield stress ,the cutting layer material flows in a plastic fashion to form a chip and tool edge plays a key role in cutting ;severe residual stress is observed beneath the formed surface ; cutting heat is mainly converted from plastic work transformation and most heat is taken away by the chip ;a large edge radius will bring a great increment in cutting force ,especially in the thrust force .关键词
超精密切削/无网格法/FEM-SPH耦合/仿真Key words
ultra-precision cutting/mesh-free method/FEM-SPH coupling/simulation分类
矿业与冶金引用本文复制引用
郭晓光,魏延军,张小冀,金洙吉,郭东明..基于FEM-SPH耦合方法的AISI4340钢超精密切削过程仿真[J].大连理工大学学报,2013,(4):526-531,6.基金项目
“九七三”国家重点基础研究发展规划资助项目（2011CB706704）． （）
