Finite element simulation study on cutting coal and rock by cutting head of roadheader

Abstract

In order to improve the cutting efficiency of the roadheader and address the challenge of monitoring the load of the cutting head and pick, a load simulation method was proposed using ABAQUS finite element software to simulate the cutting head at different cutting depths under various cutting conditions. According to the coal cutting test, a finite element simulation model was developed using Drucker-Prager as the constitutive model of coal to simulate the conical pick cutting of coal. The results of the finite element analysis were compared with the cutting test results, and the reliability of the former was confirmed. The study further involved establishing a model of cutting coal with different depths under various working conditions, and the torque waveform was obtained through finite element simulation. MATLAB was employed to program the theoretical formula, the theoretical waveforms of the force and torque of the cutting head were obtained. Additionally, the mean value of the cutting force of each pick in the finite element simulation results under different working conditions was statistically analyzed, and its distribution law was obtained. The results showed that the finite element simulation results were in good consistency with the theoretical calculation results, indicating that the simulation method was both reasonable and feasible for simulating the coal cutting process. Finite element simulation combined with theoretical calculation can be used in the stability control of cutting head dynamic load, and provide a basis for improving cutting efficiency.