机械科学与技术2025，Vol.44Issue(10)：1721-1731,11.DOI:10.13433/j.cnki.1003-8728.20230338
损伤演化模型对钛合金精整加工数值仿真精度的影响研究
Study on Influence of Damage Evolution Model on Precision of Numerical Simulation of Titanium Alloy Finishing
摘要
Abstract
When the finite element simulation method is used to study the cutting mechanism of titanium alloy,different damage evolution models and their parameter settings greatly affect the reliability and accuracy of the results.In this paper,a three-dimensional turning model for titanium alloy finishing is established via ABAQUS,and the turning process of Ti6Al4V is simulated with the different damage evolution models(fracture energy and failure displacement).In view of the fact that the failure displacement in the damage evolution model is difficult to be reasonably valued in modeling,a failure displacement value method is given.According to the unit size,three groups of different failure displacement values are set for simulating the cutting,and then the law of failure displacement value is summarized.Finally,the effects of the two damage evolution models on the cutting force,chip morphology and residual stress are compared.The results show that under the same processing parameters,the simulation accuracy is more accurate when the failure displacement is close to the cell size.The damage evolution model based on failure displacement is more convenient than the damage evolution model based on the fracture energy,and which has good consistency with the test results.关键词
钛合金/有限元仿真/失效位移/断裂能/切削力/切屑形貌/残余应力Key words
titanium alloy/finite element simulation/failure displacement/fracture energy/cutting force/chip morphology/residual stress分类
计算机与自动化引用本文复制引用
史丽晨,杜林珅,豆卫涛,康凯..损伤演化模型对钛合金精整加工数值仿真精度的影响研究[J].机械科学与技术,2025,44(10):1721-1731,11.基金项目
陕西省重点研发计划(2023-YBGY-386)与陕西省重大科技专项(2022-JBGS-07) （2023-YBGY-386）
