Based on the existing experiment results, the fretting fatigue contact geometry of a riveted two aluminum specimen was studied using the finite element method. The contact stress fields of the inner and outer contact ...Based on the existing experiment results, the fretting fatigue contact geometry of a riveted two aluminum specimen was studied using the finite element method. The contact stress fields of the inner and outer contact edges on the two specimen’s up and down surface under different contact friction coefficient and the fatigue loads were analyzed, the influences of the contact friction coefficient and remote stress on crack initiation were discussed. The results were in well agreement with the observations of the existing experiments, that is, the crack initiated places of the first aluminum specimen change from the area of 900 to 450, and the crack initiated places of the second aluminum specimen change from the area of 900 to 1350 with the increase of the friction coefficient and the remote stress.展开更多
基金This work is supported by the National Natural Science Foundation of China(No.51774322)Hunan Provincial Key Research and Development Program,China(No.2022SK2082)+3 种基金Hunan Provincial Natural Science Foundation of China(No.2018JJ2500)Fundamental Research Funds for the Central Universities of Central South University,China(No.2021zzts0275)Western Transportation Construction Technology Project,China(No.200631879846)Science and Technology Progress and Innovation Plan of Hunan Provincial Department of Transportation,China(No.2010003).
文摘Based on the existing experiment results, the fretting fatigue contact geometry of a riveted two aluminum specimen was studied using the finite element method. The contact stress fields of the inner and outer contact edges on the two specimen’s up and down surface under different contact friction coefficient and the fatigue loads were analyzed, the influences of the contact friction coefficient and remote stress on crack initiation were discussed. The results were in well agreement with the observations of the existing experiments, that is, the crack initiated places of the first aluminum specimen change from the area of 900 to 450, and the crack initiated places of the second aluminum specimen change from the area of 900 to 1350 with the increase of the friction coefficient and the remote stress.
基金2016 Annual 'Extracurricular Teaching Activities' Project in Hainan Medical College%Student Innovation Training Project in Hainan Medical College (HYCX2015194)海南医学院2016年度“课外教学活动”项目%海南医学院大学生创新训练项目(HY-CX2015194)