摘要
利用有限元分析软件建立了随机多弹丸模型,基于随机多弹丸模型的残余应力分布并结合用户子程序,对工件待喷丸表面进行面强化顺序的改变,研究了不同喷丸面强化顺序对残余应力分布和工件模型变形量的影响。结果表明,不同的喷丸面强化顺序会影响各强化面的残余应力分布状态,通过欧几里得距离进行了残余应力分布曲线相似度的评判,全对称强化顺序下X0和X1面的残余应力分布曲线欧几里得相似度平均值为0.0055,是顺序强化下X0和X1面的残余应力分布曲线欧几里得相似度平均值的1.9倍,改善了残余应力分布状态;不同喷丸面强化顺序中,全对称强化顺序S4的最大变形量为0.052 mm,相比较顺序强化S3最大变形量0.061 mm减少了15%,提高了工件的尺寸精度。
Finite element analysis software was used to establish a random multi-shot model.Based on the residual stress distribution of the random multi-shot model and combined with the user subroutine,the surface strengthening sequence of the workpiece to be shot peened was changed,and the influence of different shot peening surface strengthening sequence on the residual stress distribution and the deformation amount of the workpiece model was studied.The results show that different shot peening surface strengthening sequence can affect the residual stress distribution state of each strengthening surface.The similarity of residual stress distribution curves was evaluated by Euclidean distance.The average value of Euclidean similarity of residual stress distribution curves of X0 and X1 surfaces is 0.0055 under full symmetric strengthening sequence.It is 1.9 times of the average value of Euclidean similarity of residual stress distribution curves for X0 and X1 surfaces under sequential strengthening,which improves the residual stress distribution state.Among the different shot peening surface strengthening sequence,the maximum deformation of the full symmetric strengthening sequence S4 is 0.052 mm,which is reduced by 15%compared with the maximum deformation of 0.061 mm of the sequential strengthening sequence S3,and the dimensional accuracy of the workpiece is improved.
作者
丁腾飞
陈晟
付婧颐
高建永
张朝阳
鲁世红
DING Teng-fei;CHEN Sheng;FU Jing-yi;GAO Jian-yong;ZHANG Chao-yang;LU Shi-hong(College of Mechanical&Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Shandong KaiTai Shot Blasting Machinery Share Co.,Ltd.,Binzhou 256217,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2023年第7期78-84,共7页
Journal of Plasticity Engineering
关键词
喷丸
强化顺序
有限元模拟
变形量
残余应力
shot peening
strengthening sequence
finite element simulation
deformation
residual stress
