表面技术2016，Vol.45Issue(5)：51-55,5.DOI:10.16490/j.cnki.issn.1001-3660.2016.05.007
飞机腐蚀损伤构件喷丸强化后的表面残余应力场
Surface Residual Stress Field by Shot Peening on Corroded Aircraft Structural Part
摘要
Abstract
ABSTRACT:Objective To investigate the effects of impact methods and surface geometric parameters of aircraft corroded parts on residual stress field of the target damaged surface by shot peening.MethodsGlass beads and 7075 corrosion damaged civil aircraft structural parts were taken as the research objects, the Abaqus software was adopted and the finite element model of the multiple and random impacts was established. The residual stress fields under the conditions of different impact methods, fixed impact directions and fixed impact incidence angles, and different surface geometric parameters of the damaged parts were obtained. The verified experiments were carried out.Results A nearly uniform residual stress field on the target surface could be achieved by the impact method of fixed impact incidence angle, and the stresses disparities on different regions of the damaged surface existed obviously under the condition of fixed impact direction.ConclusionWhen the other parameters were invariant, the smaller the incidence angle of impact, the lager the compressive residual stresses on the target surface. It is better to impact the target surface along its normal direction. A smooth damaged transitional surface should be formed during clearing the corro-sion of the parts before shot peening.关键词
老龄飞机/腐蚀损伤/飞机构件/喷丸强化/表面残余应力Key words
aging aircraft/corrosion damage/aircraft structural parts/shot peening strengthening/surface residual stress分类
矿业与冶金引用本文复制引用
程秀全,夏琴香,陈志超,林列书..飞机腐蚀损伤构件喷丸强化后的表面残余应力场[J].表面技术,2016,45(5):51-55,5.基金项目
国家自然科学基金资助项目(51575117)；国家自然科学基金(民航联合基金)资助项目(61179051)FundSupported by the National Natural Science Foundation of China(NSFC,51575117) and Joint Fund between NSFC and the Civil Aviation Administration of China(CAAC,61179051) （51575117）
