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(续上期)3二维模型盘形滚刀的二维模型是将盘形滚刀的破岩运动作为平面运动进行研究的。3.1理论研究澳大利亚罗克斯巴勒[17(]F.F.Roxborough)对这一模型进行了理论研究,其垂直推力计算(1975年)也采用伊万斯论点,只是把横截面积A修正为矩形面积,并认为是全面积,参见图1(c)。即:
(Continued) 3 2-D Model The 2D model of a disc hob is a study of the rock breaking motion of a disc hob as a planar motion. 3.1 Theoretical Studies This model has been studied theoretically by Roxbalale of Australia [17]. Its vertical thrust calculation (1975) also uses Evans’ argument that the cross-sectional area A is modified to a rectangular area , And considered as full area, see Figure 1 (c). which is: