TC17钛合金材料Johnson-Cook本构模型应用于切削加工的精确性研究  

Research of Johnson-Cook Constitutive Model to TC17 Titanium Alloy Material for Cutting Process Accuracy

作　　者：沈雪红 徐龙 韩栋 关艳英 张定华[2] Shen Xuehong;Xu Long;Han Dong;Guan Yanying;Zhang Dinghua(AVIC Xi′an Aircraft Industry Group Company Ltd.,Xi′an 710089,China;不详)

机构地区：[1]中航西安飞机工业集团股份有限公司,西安市710089 [2]西北工业大学航空发动机高性能制造工业和信息化部重点实验室

出　　处：《工具技术》2025年第1期46-54,共9页Tool Engineering

摘　　要：通过TC17钛合金材料的力学性能试验和霍普金森试验获得TC17钛合金材料在不同温度和应变率条件下的应力应变曲线,分析TC17钛合金材料的力学性能及其对应变率和温度变化的敏感性,建立TC17钛合金材料的Johnson-Cook本构模型。基于建立的Johnson-Cook模型建立TC17钛合金二维直角切削仿真模型,通过仿真和试验结果对比,验证该本构模型的精确性。研究结果表明:与试验结果相比,二维直角切削仿真模型在切向和进给方向的切削力最大误差分别为31.3%和27.3%,平均误差分别为19.15%和17.72%。Through the mechanical property test and Hopkinson test of TC17 titanium alloy material,the stress-strain curves of TC17 material under different temperature and strain rate conditions are obtained.The mechanical properties of TC17 titanium alloy material and its sensitivity to strain rate and temperature changes are analyzed.A Johnson-Cook constitutive model of TC17 titanium alloy material is established.Based on the established Johnson-Cook model,two-dimensional orthogonal cutting simulation models of TC17 titanium alloy are established,and the accuracy of the constitutive model for cutting processing is verified by comparing the simulation and experimental results.This study analyzes the errors of cutting force and cutting temperature in two-dimensional orthogonal cutting simulation models by comparing cutting simulation with experimental results.The results show that the maximum errors of cutting force in the cutting and feed directions of the two-dimensional orthogonal cutting simulation model are 31.3%and 27.3%,respectively,and that the average errors are 19.15%and 17.72%,respectively.

关 键 词：本构模型 仿真模型 切削力 切削温度 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG506[金属学及工艺—金属材料] TH162.1[金属学及工艺—金属学]