scholarly journals Research on the Elastic Properties of Discontinuous Contact Wire Rope for WR-CVT

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Wu Zhang ◽  
Jingliang Wu ◽  
Yishan Liu ◽  
Shishan Sun ◽  
Yanping Jia
Keyword(s):  
Elastic Properties ◽  
Contact Stress ◽  
Steel Wire ◽  
Element Model ◽  
Wire Rope ◽  
Wear Scar ◽  
Continuous Contact ◽  
Spiral Trajectory ◽  
Geometry Model ◽  
Contact Points

This study mainly conducts the research on the discontinuous contact elastic properties of wire rope based on WR-CVT. The geometry model and finite element model of continuous contact and discontinuous contact of 2/3 lay pitch wire rope are established. And the contact stress distribution of the steel wire is analyzed through 5 sections and 5 contact points. The results show that on the C-C plane, the contact stress of the discontinuous contact model is 229.4 MPa higher than that of the continuous contact, but this difference is not obvious on the D-D plane. The contact stress nephogram is elliptical, but in the noncontact area, the shape of the contact trace shows a distinct noncomplete ellipse, and the contact trace is distributed along the spiral trajectory of the steel wire. Point 4 due to the reduction in contact area, compared with continuous contact, discontinuous contact shows a higher stress value. The geometric dimensions of the wear scars of continuous contact and discontinuous contact indicate that regardless of the length of the wear scar or the width of the wear scar, the geometric characteristics of steel wire wear mark in discontinuous contact are larger than that in continuous contact, so the discontinuous contact aggravates the surface wear of wire. This research lays a theoretical foundation for the discontinuous contact wear and fatigue of WR-CVT wire rope and other components.

Detailed Finite Element Modeling of a High Capacity Mooring Steel Wire Rope: Calculation of the Stress Concentration Near the Connection

2020 ◽  
Author(s):  
Michaël Martinez ◽  
Sébastien Montalvo
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Stress Concentration ◽  
Finite Element Model ◽  
Steel Wire ◽  
High Capacity ◽  
Element Model ◽  
Wire Rope ◽  
Contact Forces ◽  
Life Assessment

Abstract The mooring of floating platforms is an important challenge for the offshore industry. It is an important part of the design engineering and, often, a critical point for the fatigue life assessment. A solution that could improve the fatigue life is to directly connect the mooring rope to the platform, without an intermediate chain. However this solution is not widespread and the behavior of a rope near such a connection is little known. The present paper proposes to better understand this behavior, thanks to a detailed finite element model of the rope. The study case is a steel wire rope directly connected to a floating wind turbine. A local finite element model of the rope has been built, where the wires are individually modeled with beam elements. One end of the rope is clamped, simulating the connection, while tension and cyclic bending oscillations are applied to the other end. A localized bending takes place near the connection, leading to stress concentration in the wires. The stress concentration and the local contact forces are calculated for each wire. These data are important entry parameters for a local failure or fatigue analysis. This latter is however not presented here. Despite IFPEN experience in the development of local finite element models of steel wire ropes, it is the first time that such a high capacity rope (MBL = 12 500 kN) is modeled. This is challenging because of the large diameter of the rope and the large number of wires. However this modeling approach is very valuable for such ropes, because the experimental tests are rare and very expensive.

Numerical simulation and experimental study on stress deformation of braided wire rope

2016 ◽  
Vol 52 (2) ◽  
pp. 69-76 ◽  
Author(s):  
Hui Wang ◽  
Chao Fu ◽  
Weihua Cui ◽  
Xia Zhao ◽  
Shengjun Qie
Keyword(s):  
Numerical Simulation ◽  
Cross Sections ◽  
Steel Wire ◽  
Element Model ◽  
Tensile Tests ◽  
Structural Features ◽  
Wire Rope ◽  
Geometric Entity ◽  
Simulation Results ◽  
Stress And Deformation

To explore the mechanical properties of braided wire rope, relevant theories of differential geometry are applied to deduce the space curve parametric equation of braided wire rope, specific to the structural features of the rope. On this basis, a geometric entity model of YS9-8 × 19 braided wire rope is established. Through mesh generation, a finite element model of braided wire rope is obtained. Constraints and loads are applied for numerical simulation calculations. The numerical simulation results are analyzed to reveal the stress and deformation distribution rules of the rope strands along the rope axis direction and on the cross sections of strands. Tensile tests of YS9-8 × 19 steel wire ropes are performed. The test data and the analogous simulation results coincide, verifying the rationality of the model. The study provides theoretical bases for subsequent frictional wear and life studies on this steel wire rope.

Impact Analysis of Different Cable Types on Saddle-Shaped Cable-Net in Construction Process

2012 ◽  
Vol 479-481 ◽  
pp. 190-193
Author(s):  
Zhan Sheng Liu ◽  
Ran Zhang
Keyword(s):  
Mechanical Properties ◽  
Impact Analysis ◽  
Steel Wire ◽  
Steel Structure ◽  
Element Model ◽  
Wire Rope ◽  
Construction Process ◽  
New Type ◽  
Prestressed Steel Structure ◽  
The Impact

Cable is widely used in the actual project of prestressed steel structure for its mechanical properties can be fully used. Saddle-shaped cable net is a new type of large-span prestressed structure, but there is little study on the impact of different cable types on the mechanical properties of saddle-shaped cable net during the construction. In order to meet the thought of integration of design and construction, a finite element model of saddle-shaped cable net has been established. The four types of cables such as semi-parallel steel tendon cable, steel wire rope cable, steel strand cable and full-locked coil rope are chosen. The impact on mechanical properties of the structure was analyzed by different cable types.

The Mechanism Research of Forming Belt of Belt Insulation Board Machine

2012 ◽  
Vol 430-432 ◽  
pp. 877-880
Author(s):  
Jun Sun ◽  
Tong Xu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Steel Wire ◽  
Dimensional Change ◽  
Element Model ◽  
Wire Rope ◽  
Computational Method ◽  
Mechanism Research ◽  
Variation Curve ◽  
Rubber Belt

This paper aims to research the method of rational designing the distance between steel wire rope and also to analyze and calculate the effect of transverse distortion during designing the size of forming rubber belt when the belt works. Finite element model was established to calculate the transverse distortion of forming rubber belt as the distance between steel wire rope increases. The results show that the transverse distortion of forming rubber belt will increase when the distance between steel wire rope increases. The variation curve of the transverse distortion of formative rubber belt and the distance between steel wire rope is also obtained. The conclusion is that the dimensional change of insulation board forming machine rubber belt has great effect on forming insulation board. The computational method in this text aims to help for correctly designing the size of forming rubber belt.

scholarly journals Multi-Body Dynamics Simulation of Hoisting Wire Rope and Its Stress Analysis

2020 ◽  
Vol 38 (3) ◽  
pp. 485-493
Author(s):  
Zhi Qin ◽  
Qing Huang ◽  
Hongrui Jin ◽  
Hongqian Xue
Keyword(s):  
Tensile Stress ◽  
Cross Section ◽  
Contact Stress ◽  
Stress Amplitude ◽  
Steel Wire ◽  
Geometric Model ◽  
Maximum Tensile Stress ◽  
Wire Rope ◽  
Dynamics Simulation ◽  
The Wire

As a key component of the hoisting system of the crane, the steel wire rope will bear a variety of loading actions such as stretching, bending, vibration and impact in the process of traction hoisting. Therefore, it is important to determinate the dynamic characteristics of the steel wire rope under complex loads and understand the stress-strain state to predict the risk of hoisting operation in advance. This article takes the bridge crane as the engineering background, first, a dynamic model of a steel wire rope lifting system based on ADAMS/Cable was established, and the dynamic stress spectrum of the steel wire rope during the lifting process was calculated and obtained. Secondly, by establishing the geometric model and finite element model of the wire rope, the tensile stress and wire displacement distribution of the wire rope and the contact stress between the wire rope and the pulley and the wires inside the wire rope are analyzed during the lifting process of the crane. The final results show that the instantaneous acceleration of the steel wire rope increases the maximum tensile stress of the steel wire rope by 37% compared with the stable lifting stage at the instant of starting the steel wire rope, causes an increase in the stress amplitude of the wire rope cross section, and the lifting process of the steel wire rope is accompanied by unstable vibration loads. The analysis found that the outermost cross-section of the steel wire rope's outer strand was subjected to the greatest stress, and its local maximum tensile stress amplitude was increased by 56% compared to the stable lifting stage. The contact stress generated by the contact between the steel wire rope and the pulley causes contact wear on the external and internal strands of the steel wire rope, and promotes fatigue fracture of the steel wire rope.

Numerical Calculation and Analysis of Mechanical Strength of Steel Wire Product

2011 ◽  
Vol 228-229 ◽  
pp. 1022-1028
Author(s):  
Dao Ming Wang ◽  
You Fu Hou ◽  
Qing Rui Meng
Keyword(s):  
Finite Element ◽  
Mechanical Strength ◽  
Steel Wire ◽  
Element Model ◽  
Wire Rope ◽  
Element Analysis ◽  
Wire Ropes ◽  
Tensile Experiment ◽  
The Impact ◽  
Better Than

To obtain the influence law of laying combination and lay pitch multiple on mechanical strength of steel wire product, we took 6×19IWS right lang lay and right regular lay wire ropes as examples, combining with the strength theory, nonlinear finite element analysis were carried out with ANSYS software. The simulation results show the mechanical strength of the lang lay wire rope is better than that of the regular lay at the same lay pitch multiple; the lay pitch multiple of rope has a great impact on mechanical strength of steel wire product, however, the impact trend is similar among difference laying combinations, meanwhile the effect of the lay pitch multiple of strand is relatively small. Finally, finite element model for wire rope was verified reasonable through tensile experiment. Research results have important applications value for structural design and rational use of wire rope.

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