In this paper,an equivalent simplification method of complex wire rope model is proposed to provide convenience for engineering application and detection of wire rope.Simplified three-dimensional solid models of steel wire rope before and after were established.The geometric model was introduced into the finite element software to construct a finite element model of steel wire rope for tensile simulation.The stress and strain distributions of 1×7+IWS wire rope and 6×7+IWRC wire rope with the same cross-sectional area under different tensile distances were compared,and the equivalent plastic strain distributions and sizes of the two models at dangerous positions under high tensile load were also compared.Then,based on the strain fatigue method,cyclic tensile loading was applied to the wire rope before and after simplification,and the fatigue life distribution and difference at the middle section were compared to verify the feasibility of using the simplified model to predict the fatigue life of complex wire rope.The results show that the dangerous contact area of steel wire inside the steel wire rope is the contact area between the surface of the middle core wire and the lateral wire,and the magnitude and distribution law of stress and strain and equivalent plastic strain in the whole and section of the model before and after simplification are similar.The fatigue life distribution of the model before and after simplification is similar at the cross section,and the dangerous areas prone to fatigue damage are all at the middle core wire.In addition,the minimum fatigue life difference at the model section before and after simplification is less than 10%.
steel wire ropemodel simplificationfinite element analysisfatigue life prediction
万方数据
维普
