基于镜像铣削加工的飞机蒙皮残余应力与诱导变形分析  

Analysis of Residual Stress and Induced Deformation of Aircraft Skin Based on Mirror Milling

作　　者：高秋阁 张立强 钱栊 杨杰 辜茂 GAO Qiuge;ZHANG Liqiang;QIAN Long;YANG Jie;GU Mao(School of mechanical and automotive engineering,Shanghai University of Engineering Science,Shanghai 201620;School of Mechanical Engineering,Shangqiu Institute of Technology,Shangqiu 476000;Chengdu Useful Technology Company Limited,Chengdu 610511)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620 [2]商丘工学院机械工程学院,商丘476000 [3]成都永峰科技有限公司,成都610511

出　　处：《宇航材料工艺》2024年第6期129-135,共7页Aerospace Materials & Technology

摘　　要：主要针对残余应力诱导工件变形进行研究分析,建立三维有限元铣削模型,考虑进给量与背吃刀量导致的残余应力对变形的影响,将仿真残余应力融入模型,研究其与变形的关系,并通过实验验证仿真可靠性。结果表明,随着每齿进给量的增大,工件表面(d=0)在X和Y方向上的残余压应力均相应随之增大,当测试点与表面距离d>10μm时,残余应力基本保持不变;随着背吃刀量的增加,工件表面在X和Y方向的残余应力均相应随着增大;蒙皮变形量随着每齿进给量的增加而增加,随背吃刀量的增大而增大。仿真与测试结果对比表明,加工变形趋势基本一致,佐证了建模的可靠性。The research focuses on analyzing the deformation of workpieces induced by residual stresses,the three-dimensional finite element milling model is established,taking into account the influence of residual stress caused by the rate of the back-cutting amount on the deformation,the simulated residual stress is integrated into the model,the relationship between the simulated residual stress and deformation is examined,and the simulation reliability is verified through experiments.The results indicate that as the tooth increases,the residual compressive stress on the surface of the workpiece(d=0)in the X and Y directions correspindingly increases,and the residual stress remains relatively unchanged when the distance between the test point and the surface exceeds 10μm.Wthe the increase in the number of baak-cutting tools,the residual stress on the surface of the workpiece in the X and Y directions increases accordingly.The deformation of the surface layer escalates with the rise in the feed rate of each tooth and also increases with the amount of back-cutting.A comparison of simulation and test results indicates that the maching deformation trends are fundamentally similar,thereby confirming the reliablity of the modeling.

关 键 词：蒙皮 镜像铣 残余应力 钛合金 变形分析 本构模型 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]