Research on Dynamic Characteristics of Shearer Cable Based on Multiphysics Field Coupling

Abstract

Utilizing MCP0.66-1.14 (3*95+1*35) and control wire core cross-sectional areas of 4 mm² , 6 mm² , and 10 mm² as the specifications for shearer cables, a three-dimensional model of the cable is developed using theta and trajpar functions. A four-field coupling simulation model for the electric, magnetic, and thermal structure of shearer cables is established based on the fundamental principles of electric and magnetic fields, temperature fields, and structural mechanics. At a traction speed of for the shearer, linear section simulation experiments were conducted on the cable. With an increase in the cross-sectional area of the control wire core conductor, the cable's equivalent stress, temperature of the cable conductor, magnetic flux density mode, current density mode, and volume loss density exhibit specific changes. This study focuses on cables of identical specifications and explores the impact of cable section to diameter ratios (4, 5, 6, 7, and 8) on the dynamic characteristics of the cables. The findings indicate that as the cable section to diameter ratio rises, the equivalent force increases, while the temperature decreases, with slight decreases observed in the magnetic flux density mode, current density mode, and volume loss density. An orthogonal experiment was designed to investigate the electromagnetic loss characteristics of cable control cores under various influencing factors. The results suggest that among the three factors of cable section diameter ratio, cross-sectional area, and current carrying capacity, the cross-sectional area significantly affects the magnetic flux density mode, current density mode, and volume loss density of the control wire cores. The experimental results demonstrate that the overall characteristics of the cable are favorable.