Numerical Simulation And Analysis Of Bending Cable Slip Between Steel Wires

The bending fatigue problem of the cable is an advanced topic in the research of cabletechnology all over the world. Research shows that: with the deflection at the end of cableanchor and vibration, the layered slippage phenomenon will appear, cable wire at thecondition between slip and bond (non slip),this repeated changes make the local cable at theanchor end appear stronger nonlinear stiffness, bending fatigue stress is the first cause factorsof cable fatigue damagE-In this paper, based on the theory of contact mechanics, the force mechanism of the cablewas further deepened by finite element numerical simulation. The paper mainly completed thefollowing work:1.The author made a depth research on the cable bending fatigue performance,summarized national cable bending fatigue in theoretical and experimental research.Especially focus on the summarizes of the layered slip theory and the experimental aspects ofresearch results which made by our project teams in recent years.2.Using the initial strain method and cooling method in ANSYS to simulate theequivalent line between two layers of steel pressure while at both ends of the cable wire wasgiven a tensile force the action of the twist angle, the FEM solution is consistent with thetheoretical results.3.Based on the classical Hertz contact theory, The author used the finite elementnumerical simulation method to analyze the contact of two steel in the bridge condition,contrastive the analysis of the plane element, solid finite element model through the mesh indifferent ways, to seek the balance between the grid number, quality and accuracy ofcalculation results.4.Based on the classical Hertz contact theory, The author analyze the Mechanicalcharacteristics of1x7. Φs15.2mm steel wire by finite element numerical simulation, theaction of the "arch mechanism effect" under the conventional cable force are studied, bycomparing the ring to the contact area, core wire core contact area of contact stress ratio, thesimplified model of the curved sliding was put forward, which has certain guidingsignificance for engineering.