穿孔速度
The results show that the SPT load displacement curves of BMG are very sensitive to punch velocity and test temperature, and the shape of SPT load displacement curves is controlled by strain rate sensitivity, viscosity and punch velocity etc.
结果表明,BMG材料的SPT载荷位移曲线对压头速度和实验温度的敏感性较高,而SPT载荷位移曲线的形状与材料的应变速率敏感系数、粘度、压头速度等因素有关。
According to the upper-bound theorem, the influence of technological parameters on the average pressure of punch during the ironing with contoured die of equal strain rate is studied.
根据上限原理,研究了等应变模变薄拉延时各变形工艺参数对冲头单位压力的作用。
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