Quasi-static Compression Performance Analysis Of The Anti-collision Wire Rope Ring

The steel wire rope is usually applied in anti-collision ring and vibration isolator industries in the form of a ring shape to achieve the purpose of energy absorption,and is of great significance for engineering.The mechanical property analysis and parameter analysis of the wire rope ring are hot issues concerned by scholars.In this paper,the mechanical properties and energy absorption characteristics of a single wire rope ring were studied by experiments and numerical simulation methods based on finite element technology,considering the changes of machining parameters and structural parameters.The main contents and conclusions of this paper are as follows:(1)Taking 6×19-WSC wire rope as the research object,a single rope ring was designed for quasi-static compression test.Wire rope rings with diameters of the wire rope of 16mm,18mm and 20mm and diameters of the rope ring of 200mm,250mm and 300mm were analyzed by experiments.The results show that when diameters of wire rope and rope ring were changed and the quasi-static compression was carried out,the wire rope ring size is positively correlated with the diameter of wire rope in the compression force,and is negatively correlated with the diameter of the ring.With the reference stiffness K_Q as the evaluation index,the stiffness of the wire rope ring decreases with the increase of the diameter of wire rope ring and increases with the increase of the diameter of wire rope.(2)In the present research,the quasi-static compression tests of wire rope ring were conducted,and the corresponding numerical model was established.The effects of diameters of wire rope and rope ring on the in-plane compression behaviors and energy absorption performance of wire rope ring were investigated.The results indicate that the compression force of steel wire rope ring is positive related to the wire rope diameter and negative related to the rope ring diameter.The numerical results of total energy absorption and specific energy absorption are compared well with the experimental results,and the relative error is lower than10%,which validates the numerical model.The fitting analysis of relations between specific energy absorption with wire rope diameter and rope ring diameter was carried out.The fitting analysis results point out that the specific energy absorption increases with the increasing wire rope diameter and decreases with the increasing of rope ring diameter.(3)To explore some parameters affecting the anti-collision performance of the wire rope ring,6×7-IWRC wire rope was taken as the research object,and the influence of lay angle and friction coefficient on the in-plane compression behavior of the wire rope ring was studied.The energy absorption characteristics of wire rope ring was analyzed using the numerical simulation method.The results show that the smaller the lay angle is,the more obvious the loose strands phenomenon appear in the deformation process is,and the worse the stability is and the greater the internal energy produced by the wire rope ring.The relationship between the specific energy absorption of the wire rope ring and the lay angle was fitted using a cubic polynomial model.The result shows that When the lay angle is 15.9°,the specific energy absorption of the rope ring reaches the maximum value in the compression process,which indicates that the lay angle is a significant factor affecting energy absorption characteristics of the wire rope ring.The coefficient of friction between the rope were taken 0.115,0.2 and 0.4.The result shows that the ratio of energy dissipated by friction to internal energy varies from 0.6%to 2.6%,which increases with the increase of friction coefficient.