The coupling effects of cyclic loading stress and torsion will result in fretting fatigue wear inside wire rope.The fretting-fatigue wear that wire rope subjects to is result of fatigue and fretting wear at the same time,which will lead to breaking of wire or strand inside wire rope,which significantly affects service life of wire rope.A device simulating fretting-fatigue wear of wire rope was adapted to investigate fretting fatigue wear of wire rope in actual working condition.Results in-dicate that,under impact load,fretting fatigue wear causes damage and gradual fracture of steel wire inside wire rope,dam-age severity from large to small and fracture sequence are as follows:c-f wire → f-f wire → f-c wire → c-c wire.This is the same as order of fretting wear degree of wire rope.Breakage of c-c wire is accompanied by breakage of f wire and failure of wire rope.With increasement of loading times,subsequent breaking force of f-f wire,f-c wire and c-f wires is decreased on the whole.It is very obvious on f-c wire and c-f wires,but not on c-c wire.
万方数据
维普
