Finite element analysis on the stress state of rope hoisting equipment based on the ABAQUS
This paper presents a simulation of the steel wire rope of a certain type hoisting equipment to explore the distributions of stress and deformation in the process of lifting heavy loads. The SolidWorks software was used to establish the 3D solid model of the 6*6+WS structure of stone cross strand wire rope for a certain lifting equipment. Then the solid model of steel wire rope was imported into the ABAQUS directly through the SolidWorks and ABAQUS interface plugin, the material properties were defined, the contact pairs were established, the model was meshed, and the constraints were applied to solve the finite element model. In the normal working range of the wire rope, axial tension of 5000 N was loaded to analyse the stress and deformation distributions. The results show that the stress of wire rope presents a space spiral distribution and the stress of the lateral steel wire of the rope strand is the largest of the steel wire rope, which will provide reference for the design and improvement of the steel wire rope.
Wire Torsion Measurement for the Tasks of Monitoring of the Mechanical State of Overhead Power Transmission Line
A system of overhead power transmission line monitoring was developed to assess the effect of mechanical loads in a wire/ground wire on its torsion angle. The system allows measuring the torsion angle of the wire, helps to prevent possible overhead power transmission line damage by tracking the tension force, as well as conductor and pendant fitting defects. It includes a control device, a data station, and a dispatch software package. Controllers are installed directly on the wire/ground wire of the overhead power transmission line. The rotation and elevation angles and wire temperature are measured. Input data are processed in the data station with specialized software. The developed system for monitoring the state of overhead power transmission lines, which takes into account the wire rotation, will reduce the costs associated with their maintenance and repair.
Statically indeterminate contacts in axially loaded wire strand
This paper is concerned with the analysis of simple wire strands made from one layer of circular wires helically wrapped around a circular straight core wire. The undeformed configuration is the special case in which each of the surrounding helical wires touches its two adjacent neighbouring helical wires as well as touching the core wire. This forms a statically indeterminate contact problem. A simple finite element model is developed to analyse this situation. Numerical results show that contacts can occur simultaneously at all possible contact points when the strand is subjected to extension with both ends fixed against rotation.