Numerical simulation of coal breaking process of plow bit
Abstract：Based on explicit dynamics software ANSYS/LS-DYNA,the process of two typical plow bit cutting coal wall was simulated.Shape of slot cut by plow bit,load spectrum of bit and coal wall contact and curves of plow bit＇s parameters such as stress and strain time history were got,which can avoid the human error when use theoretical formula to calculate the external load of plow system parameters.The components of the three dimensional contact force load spectrum in the frequency domain were analyzed.The different effect of the load spectrum of two typical structural plow bit on the plow system was analyzed when cutting the coal wall,and found the location of stress concentration in the body of plow bits to discuss the two main failure modes of them,which can provide a theoretical basis for optimal design.According to the analysis results,the optimized plow bit stress is in uniform distribution,significantly improves the mechanical properties and the reliability of the plow system.
Keywords：plow bitprocess of coal breakingload spectrumoptimal design
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 878-883 )