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Numerical Simulation of Conical Pick Cutting Arc Rock Plate Fracture Based on ANSYS/LS-DYNA

机译：基于ANSYS / LS-DYNA的锥形拾取弧形岩板骨折的数值模拟

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摘要

The new method of rock breaking based on the combination of circular sawblade and conical pick was proposed to improve the effectiveness of hard rock breaking. The numerical simulation method was applied to research the conical pick cutting arc rock plate by ANSYS/LS-DYNA. The conical pick cutting arc rock plate numerical simulation model was established to research the influence of arc rock plate structural parameters and cutting parameters on cracks formation and propagation of the arc rock plate and the cutting force in the process of conical pick cutting arc rock plate. The amount of cracks is positively correlated with arc rock plate thickness, the cutting speed, and distance of cutting point to arc rock plate central axis and negatively correlated with the cutting angle. The mean peak cutting force is positively correlated with the thickness of arc rock plate and the distance of cutting point to arc rock plate central axis; however, it is negatively correlated with the arc rock plate height and width and cutting angle of conical pick. The simulation results can be used to predict the conical pick work performance with various cutting parameters and structural parameters.
机译：提出了基于圆形锯割和锥形挑选的结合的岩石破碎方法，提高了硬岩破碎的有效性。应用数值模拟方法对ANSYS / LS-DYNA的锥形拾取弧形岩板研究。建立了锥形镐切割弧形摇滚板数值模拟模型，以研究弧形岩板结构参数的影响，切割参数对锥形圆岩板裂缝形成及膨胀力的影响。裂缝量与弧形岩板厚度，切割点的切割速度和切割点的距离正相关，与电弧岩板中央轴线呈负相关。平均峰切割力与弧形岩板的厚度和切割点到弧形岩板中央轴线的距离呈正相关;然而，它与锥形镐的弧形岩板高度和宽度和切割角呈负相关。仿真结果可用于预测各种切割参数和结构参数的锥形挑选工作性能。

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