中南大学学报（自然科学版）2012，Vol.43Issue(11)：4268-4273,6.
20CrMo材料本构模型及其有限元模拟
Constitutive model and finite element simulation of 20CrMo material
摘要
Abstract
A Johnson-Cook thermo-viscoplastic constitutive model for 20CrMo material was established. The strain-hardening parameters for the model were obtained on the base of data from quasi static compression force test. And using the Oxley-Welsh cutting theory, the strain rate parameters and thermal softening effect parameters for the model were determined by the analysis of the results from orthogonal cutting experiments. Under the condition of the JC model established and shear failure criterion, the results of cutting temperature and force gotten from orthogonal cutting were analyzed by finite elements simulation. By comparison between simulation results and experimental data. The results show that the maximum relative error is within 20%. The simulation analysis and the constitutive model are reasonable.关键词
20CrMo材料/Johnson-Cook模型/切削实验/有限元仿真Key words
20CrMo material/ Johnson-Cook model/ cutting experiments/ finite elements simulation分类
数理科学引用本文复制引用
严宏志,龚黎军..20CrMo材料本构模型及其有限元模拟[J].中南大学学报（自然科学版）,2012,43(11):4268-4273,6.基金项目
国家自然科学基金资助项目(50975291) （50975291）
