Numerical Simulation And Experimental Study On Mechanical Properties Of Wire Rope For Cableway

Suspension structures are load-bearing structures formed by flexible tensile steel cables and their supporting or edge components,and are widely used in structures such as bridges and aerial cableways.The suspension structure can fully utilize the tensile performance of high-strength materials,achieve large span,small self weight,save materials,and facilitate construction,making it an ideal form of large-span structure.Among them,as a typical suspension structure,the passenger aerial ropeway structure has been more widely used with the development of the ice and snow tourism industry,which also puts forward higher requirements for the safety,performance,and quality of passenger aerial ropeways.The steel wire rope,as a key load-bearing component in passenger aerial ropeways,has the characteristics of large deformation and high internal wear due to its unique structure and complex stress state,exhibiting a large number of nonlinear problems,and is the "lifeline" for the safety of passenger aerial ropeways.However,some cableways use steel wire ropes with larger diameters,and for large diameter steel wire ropes,specialized testing equipment needs to be customized.The bending fatigue test even needs to be conducted over 100000 times,which is costly,time-consuming,and unable to reveal the mechanism of internal failure and deformation of the steel wire rope.Therefore,this article focuses on simulation analysis,supplemented by tensile and bending fatigue tests of steel wire ropes for small diameter cableways.It systematically analyzes the stress-strain distribution,plastic deformation,and fatigue failure laws of steel wire ropes under typical working conditions,and then simulates and studies the plastic deformation,fatigue failure changes,and bending fatigue life of steel wire ropes for large diameter cableways under typical tensile and bending conditions.Firstly,this article summarizes three methods for calculating the parameter equations of the centerline of the steel wire inside the steel wire rope strand,and calculates based on the Frenet — Serret frame method The parametric geometric modeling of the center line of the steel wire in the 6×36WS+IWRC wire rope strand is established,and then the parametric modeling of wire ropes with different structures is realized.Secondly,with 6×19+NF steel wire rope was taken as the research object,and tensile tests were conducted on the steel wire rope.The axial load strain curve was drawn,and its elastic-plastic characteristics under tensile load were analyzed.Furthermore,the mechanical characteristics of different lengths of steel wire ropes under axial load were simulated and analyzed,and the accuracy of different length model results was verified by comparing with experimental results.The influence of different friction coefficients and rope cores on the distribution of internal contact stress,stress strain distribution,and plastic deformation characteristics of steel wire ropes was also simulated and analyzed.Subsequently,with 6 × 19+NF steel wire rope was used as the research object to conduct bending fatigue tests on steel wire rope under different lubrication conditions.The change curve of the number of broken wires in the steel wire rope under different bending times was plotted,and the effect of lubrication on the bending fatigue failure of the steel wire rope was analyzed.Furthermore,the bending stress distribution and bending fatigue life of wire rope pulley models in different initial states were simulated and analyzed under the bending state of the pulley.The accuracy of the different initial state models was verified through wire rope bending fatigue tests,and the effect of wheel diameter ratio on the bending fatigue life of the wire rope was simulated and analyzed.Finally,using the validated and selected simulation analysis methods mentioned above,study The stress-strain distribution,plastic deformation characteristics,and fatigue failure variation of steel wire ropes for 6×36WS+IWRC cableway under typical working conditions.This article verifies through experiments on small diameter steel wire ropes that different suspension structures are load-bearing structures formed by flexible tensile steel cables and their supporting or edge components,which are widely used in structures such as bridges and aerial cableways.The suspension structure can fully utilize the tensile performance of high-strength materials,achieve large span,small self weight,save materials,and facilitate construction,making it an ideal form of large-span structure.Among them,as a typical suspension structure,the passenger aerial ropeway structure has been more widely used with the development of the ice and snow tourism industry,which also puts forward higher requirements for the safety,performance,and quality of passenger aerial ropeways.The steel wire rope,as a key load-bearing component in passenger aerial ropeways,has the characteristics of large deformation and high internal wear due to its unique structure and complex stress state,exhibiting a large number of nonlinear problems,and is the "lifeline" for the safety of passenger aerial ropeways.