J-C本构模型参数对45钢钻削仿真结果的影响规律  

The influence of J-C constitutive model parameters on the simulation results of 45 steel drilling

作　　者：程兰兰 熊良山[1] CHENG Lanlan;XIONG Liangshan(Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学,武汉430074

出　　处：《现代制造工程》2024年第9期20-24,109,共6页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(52375432)。

摘　　要：基于AdvantEdge FEM软件建立了45钢钻削过程的有限元数值仿真模型,通过单因素仿真试验获得了一组用标准麻花钻钻削45钢工件时的扭矩、轴向力、钻削温度和切屑形态仿真数据,并据此研究了45钢J-C本构模型的5个参数(屈服强度、硬化模量、应变率敏感系数、温度软化系数、应变硬化指数)对钻削过程数值仿真结果的影响。结果表明,45钢J-C本构模型的5个参数对其钻削过程数值仿真结果的影响具有明显的规律性。在给定的工艺参数与工件材料J-C本构模型的5个参数的取值范围内,扭矩、轴向力与钻削温度受屈服强度、硬化模量、温度软化系数的影响较大;切屑卷曲半径的变化主要受屈服强度、温度软化系数、应变硬化指数的影响,与参数硬化模量、应变率敏感系数的关系不大。该结果对调整与优化用于钻削过程有限元数值仿真的工件材料J-C本构模型参数,获得准确的钻削过程数值仿真结果有一定的参考价值。Based on AdvantEdge FEM software,the finite element numerical simulation model of 45 steel drilling process was established.A set of simulation data of torque,drilling force,drilling temperature and chip morphology when drilling 45 steel workpiece 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 parameters 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 variation of chip crimp radius is mainly affected by yield strength,thermal sensitivity and strain-hardening exponent,and has little relationship 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.

关 键 词：钻削过程 有限元数值仿真 J-C本构模型参数 仿真结果 45钢 

分 类 号：TG506[金属学及工艺—金属切削加工及机床]