FEM analysis and optimization of process parameters in precision bar cutting process
Precision bar cutting process is a typical large localized plastic deformation process. Based on its forming characteristics, a numerical model is established and an elasto plastic simulation is performed using the finite element method (FEM). The re-meshing method is used when the severe element distortion occurs to facilitate further computation and avoid divergence. The Normalized Cockroft&Latham fracture criterion is adopted to predict and determine the time and site of crack initiation and propagation. Based on this numerical model, the distribution and developing trend of the stress and strain in the shearing zone are predicted. Furthermore, the influence of several process parameters, such as cutting-speed, cutting temperature, cutting gap etc, on the cutting quality is analyzed. The discipline is in accordance with the actual manufacture situation, which can be guidance to optimization of process parameters.
metal forming high-speed cutting ductile fracture finite element method
ShiWen DU YongTang LI
School of Materials Science and Engineering TaiYuan University of Science and Technology TaiYuan, China
国际会议
张家界
英文
83-86
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）