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针对矿用多孔式制动盘磨损机理,运用有限元数值模拟方法,得出不同孔径与孔间距下的制动盘应力场分布。采用定速摩擦试验机,在12.5 N、37.5 N、62.5 N与87.5 N载荷下对不同孔径与孔间距、不同孔纹路排列的多孔式试样进行磨损实验,通过正交多项式回归分析方法处理实验数据,得出孔径与孔间距对耐磨性的综合影响,结果表明:斜四边形、正四边形与六边形纹路下的多孔式制动盘磨损量比普通制动盘低70%以上。
Aiming at the wear mechanism of mine porous brake disc, the distribution of stress field of brake disc with different hole diameters and hole spacings is obtained by the finite element method. A fixed-speed friction tester was used to test the wear behavior of porous samples with different pore sizes and pore pitches arranged at different pore sizes of 12.5 N, 37.5 N, 62.5 N and 87.5 N, and the experiments were conducted by orthogonal polynomial regression analysis The results show that the wearing capacity of perforated brake discs under oblique tetragon, regular tetragon and hexagonal lines is more than 70% lower than that of ordinary disc brake.