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Effect of contact stress on fretting fatigue behaviour of 35CrMoA steel under multiaxial nonproportional paths
Author(s) -
Zhou Zhiqiang,
Liu Xiaoshan,
He Guoqiu,
Ge Bin,
Le Peiwen,
Li Jingquan,
Pan Jiaqi,
Yang Yang
Publication year - 2021
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.13353
Subject(s) - fretting , materials science , structural engineering , contact mechanics , slip (aerodynamics) , composite material , stress (linguistics) , metallurgy , finite element method , engineering , aerospace engineering , linguistics , philosophy
Fretting fatigue often occurs in contact couples subjected to both bulk oscillatory loads and normal loads, which accelerates the initiation and propagation of fatigue cracks. This study explores the multiaxial fretting fatigue behaviour of 35CrMoA steel with different contact stresses under diamond and square loading paths by experimental methods. From experimental results, the fracture mechanisms with the increase of contact stress have been summarized by combining the analysis of macrorupture and microrupture surface. The strain response behaviour, characteristics of fretting region and crack propagation direction are also analysed and concluded considering the influence of loading path and contact stress in this paper, which have been rarely mentioned in the previous literature. In addition, debris composition of stick and slip regions is investigated as well.