Catastrophe Analyses of Rock Cut by Helical Cutting Mechanism
To research the change law of the load of the helical cutting mechanism cutting into the rock, the cutting experiment was done basing on the constructed rock. The constitutive model of the cutting load was build according to the experiment load, and the mechanical model of the rock was build too. Simultaneously, the mechanical model of the helical cutting mechanism cutting into the rock was build according to the actual working condition underground; and the cusp catastrophe model of the cutting process was build basing on the catastrophe analysis, the stiffness condition and the energy condition of the helical cutting mechanism cutting into the rock were acquired. Research results indicate that: the stiffness of the haulage system of the helical cutting mechanism must be smaller than the resistance stiffness of the rock, otherwise the strong vibration will be caused, and the helical cutting mechanism and the transmission system will be damaged too; the energy release rate of the helical cutting mechanism must be bigger than the required energy of the rock broken, or else the helical cutting mechanism will be lockout, even the cutting motor is damaged.
Jianmin Zeng, Zhengyi Jiang, Taosen Li, Daoguo Yang and Yun-Hae Kim
S. Y. Liu et al., "Catastrophe Analyses of Rock Cut by Helical Cutting Mechanism", Advanced Materials Research, Vols. 199-200, pp. 280-285, 2011