喷丸强化残余应力对疲劳性能和变形控制影响研究进展  

Research Progress of the Effect of Shot Peening Residual Stress on Fatigue Performance and Deformation Control

作　　者：张吉银[1,2] 姚倡锋[1,2] 谭靓[1,2] 崔敏超 周征[1,2] 孙蕴齐 李国喜 樊怡 ZHANG Jiyin;YAO Changfeng;TAN Liang;CUI Minchao;ZHOU Zheng;SUN Yunqi;LI Guoxi;FAN Yi(Key Laboratory of High Performance Manufacturing for Aero Engine(Ministry of Industry and Information Technology),Northwestern Polytechnical University,Xi'an 710072;Engineering Research Center of Advanced Manufacturing Technology for Aero Engine(Ministry of Education),Northwestern Polytechnical University,Xi'an 710072)

机构地区：[1]西北工业大学航空发动机高性能制造工业和信息化部重点实验室,西安710072 [2]西北工业大学航空发动机先进制造技术教育部工程研究中心,西安710072

出　　处：《机械工程学报》2023年第6期46-60,共15页Journal of Mechanical Engineering

基　　金：国家科技重大专项(2017-VII-0001-0094);国家自然科学基金(51875472,91860206,51905440,92160301)资助项目。

摘　　要：作为机械表面强化技术之一,喷丸强化使工件表层发生形变硬化,引入较高的残余压应力,减少了疲劳应力作用下微裂纹的萌生并抑制其扩展,从而显著提高零件的抗疲劳断裂和抗应力腐蚀开裂的能力。基于喷丸残余应力解析计算模型,从余弦函数模型、接触应力模型和球腔膨胀模型三个方面介绍喷丸强化残余应力的产生,进而对喷丸残余应力的仿真预测及影响规律进行论述。为了提高试件疲劳强度而引入的残余压应力会带来影响形位精度的变形,基于此阐述了喷丸残余应力对疲劳性能的影响及其在疲劳过程中的演化,同时论述了喷丸残余应力变形预测及控制的研究现状,最后对喷丸残余应力未来的研究内容与发展方向进行展望。As one of the mechanical surface peening techniques,shot peening makes the surface layer of the workpiece deformation hardened and introduces higher residual compressive stress,which reduces the sprouting of microcracks under fatigue stress and inhibits their expansion,thus significantly improving the resistance of the part to fatigue fracture and stress corrosion cracking.Based on the analytical calculation model of shot peening residual stress,the generation of shot peening residual stress is introduced from three aspects:cosine function model,contact stress model and spherical cavity expansion model,and then the simulation prediction of shot peening residual stress and the influence law are discussed.The residual compressive stresses introduced to improve the fatigue strength of the specimen will bring about deformation that affects the form accuracy.Based on this,the effects of shot peening residual stresses on fatigue performance and their evolution in the fatigue process are explained,and the status of research on the prediction and control of shot peening residual stresses deformation is discussed,and finally the future research content and development direction of shot peening residual stresses are prospected.

关 键 词：喷丸强化 残余应力 疲劳性能 变形 

分 类 号：V263[航空宇航科学与技术—航空宇航制造工程]