The influence of J-C constitutive model parameters on the simulation results of 45 steel drilling
Based on AdvantEdge FEM software,the finite element numerical simulation model of 45 steel drilling process was es-tablished.A set of simulation data of torque,drilling force,drilling temperature and chip morphology when drilling 45 steel work-piece with standard twist drill was obtained through single factor simulation experiment.The effects of five parameters of 45 steel J-C constitutive model(yield strength,hardening modulus,strain rate sensitivity,thermal sensitivity and strain-hardening exponent)on the numerical simulation results of drilling process were studied.The results show that the influence of five parame-ters of J-C constitutive model on the numerical simulation results of drilling process of 45 steel has obvious regularity.The torque,drilling force and drilling temperature are greatly affected by yield strength,hardening modulus and thermal sensitivity.The varia-tion of chip crimp radius is mainly affected by yield strength,thermal sensitivity and strain-hardening exponent,and has little rela-tionship with parameters hardening modulus and strain rate sensitivity.The results have a certain reference value for adjusting and optimizing the parameters of workpiece material J-C constitutive model used for finite element numerical simulation of drilling process and obtaining accurate numerical simulation results of drilling process.
drilling processfinite element numerical simulationJ-C constitutive model parameterssimulation results45 steel
万方数据
维普
