Optimal Analysis for Cutter Space of Linear Cutter Machine Based on ABAQUS

In this paper,finite element software ABAQUS is used to simulate a process of the linear cutter machine,and to analyze fragmentation process of the rock and confirmed the optimal cutter space.According to the simulated results,it is shown that special energy(SE)decreases first and then increases following.When disc cutter cutting rock,SE with the increase of rolling length increases until the rolling length up to 100 mm,and then SE remained stable.SE with cutter spacing increases first decreased and then increased.The cutter space decrease until the cutter space reach 70 mm,then SE value obtain basic stability.SE considerations indicate that a spacing of 50 mm is close to optimum in this hard brittle crystalline rock.The 50 mm cutter space which two cutters fragmentation zone is interconnected and SE value reach low,has the optimal value in this simulation study.The research has certain reference value to optimize cutter system and to understand rock fragmentation theory for the boring tunnel project.