Simulation on dynamic characteristics of TC4 cutting with crack defects

作     者：SHI Lichen WANG Jian DOU Weitao YUAN Jiageng 史丽晨;王简;豆卫涛;袁嘉庚

作者机构：School of Mechanical and Electrical EngineeringXi’an University of Architecture and TechnologyXi’an 710055China College of Aeronautical Manufacturing EngineeringXi’an Aeronautical Polytechnic InstituteXi’an 710089China 

出 版 物：《Journal of Measurement Science and Instrumentation》 (测试科学与仪器（英文版）)

年 卷 期：2024年第15卷第3期

页      面：387-396页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by Key Research and Development Program of Shaanxi Province(No.2023-YBGY-386) Natural Science and Technology Fund General Program of Shaanxi Province(No.2021JM-599) 

主　　题：crack defect TC4 ABAQUS centerless lathe 

摘      要：Titanium alloys play an important role in aerospace and other ***,after precision forging and cold rolling process,some defects will appear on the subsurface of titanium alloy bars,thus reducing the surface quality and precision of turning *** study aimed at exploring the effect of crack defects on TC4 ***,the finite element cutting simulation model of TC4 material with crack defects was established in ***,the cutting parameters such as cutting force,stress concentration,chip morphology,residual stress were obtained by changing the variables such as the size and height of crack ***,the turning experiment was carried out on centerless *** results show that the cutting force changes abruptly when the defect position is located on the cutting path,the maximal stress occurs at the tip of the defect,and the mutation of stress value is more serious with the increase of defect size;the buckling deformation of chip morphology occurs and becomes less serious with the increase of the distance between the defect position and the workpiece surface;the surface residual stress near the defect is related to the stress when the tool is close to the defect,the larger defect size and the closer to the machined surface,the greater the residual ***,under certain processing conditions,the TC4 material should avoid large size defects or increase the distance between defects and the machined surface,so as to obtain better and stable surface quality.