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Abstract: Cutting depth and spacing are two important parameters for the efficiency of a roadheader in mining operation. In this study, the case of a roadheader excavating a coal gallery is taken into account. Based on the explicit finite element analysis (FEA), the minimum cutting specific energy (SE) was obtained by the series of numerical simulations.
The mechanism of cutting process of roadheader with cutting head was researched, and the influences of properties of coal and rock on cutting load were deeply analyzed. Aimed at the defects of traditional calculation method of cutting load on fully expressing the complex cutting process of cutting head, the method of finite element simulation was proposed to simulate the dynamic cutting process.
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