基于ABAQUS的骨铣削残余应力分析  

Residual Stress Analysis of Bone Milling Based on ABAQUS

作　　者：钟洁 胡亚辉[1,2] 何玲瑞 张春秋[1,2] 刘婕[1,2] 郑清春 Zhong Jie;Hu Yahui;He Lingrui;Zhang Chunqiu;Liu Jie;Zheng Qingchun(School of Mechanical Engineering,Tianjin University of Technology)

机构地区：[1]天津理工大学天津市先进机电系统设计与智能控制重点实验室 [2]机电工程国家级实验教学示范中心(天津理工大学机械工程学院)

出　　处：《工具技术》2023年第8期81-85,共5页Tool Engineering

基　　金：国家自然科学基金(11672208,81741141);天津市科技特派员项目(22YDTPJC00400);天津市企业重点实验室开放基金(SY-04-202301-004)。

摘　　要：在骨科手术中,已加工骨表面的残余应力会影响骨裂纹生长以及骨表面质量。为研究铣削参数对骨材料已加工表面残余应力的影响,通过ABAQUS软件对球头铣刀铣削皮质骨进行有限元仿真,并验证了模型的正确性,设计了主轴转速、进给速度和铣削深度对残余应力的单因素试验。研究结果表明:表面残余应力与进给速度呈负相关,与铣削深度呈正相关;残余应力随主轴转速的增加呈先上升后下降的趋势,转速2000r/min为转折点。合理的铣削参数可以控制皮质骨已加工表面残余应力,从而提高骨科手术质量。In bone surgery,the residual stress on the surface of processed bone will affect the growth of bone cracks and the quality of bone surface.In other to study the influence of milling parameters on the machined residual stress of bone materials,the finite element simulation of cortical bone milling with ball-end milling cutter is carried out by ABAQUS software,and the correctness of the model is verified,and a single factor experiment of spindle speed,feed rate and milling depth for residual stress is designed.The results show that the surface residual stress is negatively correlated with the feed rate and positively correlated with the milling depth.The residual stress increases first and then decreases with the increase of spindle speed,and the turning point is the spindle speed of 2000r/min.Reasonable milling parameters can control the residual stress on the machined surface of cortical bone,so as to improve the quality of bone surgery.

关 键 词：残余应力 皮质骨 有限元仿真 铣削参数 

分 类 号：TG54[金属学及工艺—金属切削加工及机床] TH781[机械工程—仪器科学与技术]