中文摘要：

将固体颗粒介质成形工艺应用于金属板材圆筒件的拉深成形，建立相应的板材拉深力学模型。在固体颗粒传力衰减模型的基础上，通过对工件直壁区的力学分析，得到拉深过程中所需压头单位压力的函数关系式。该关系式表明，当筒形件的直壁段成形后，随着拉深系数的增加，压头最大单位压力呈线性逐渐减小；板材与凹模表面问摩擦因数增大将导致压头单位压力加大，并且该增加趋势非常明显；颗粒介质与板材之间的摩擦因数增大却可以减小压头单位压力；随着颗粒介质初始装料高度的增加，压头单位压力相应增加，这是颗粒介质所传递的应力随传递距离增加而逐渐衰减的结果。并以镁合金板材为研究对象，进行基于颗粒介质成形工艺的拉深试验和有限元模拟验证。研究结果表明，试验、模拟结果与理论值基本吻合。

英文摘要：

Solid granule medium forming（SGMF） technology is applied to the deep drawing for cylinders of sheet metal, and the corresponding mechanical model under this condition is established. On the basis of the pressure-transfer attenuation model, the formula of desired unit punch pressure during the forming process has been obtained through mechanical analysis on the straight wall zone, which demonstrates that after the straight wall zone of the cylinder comes into being, the maximum unit punch pressure will linearly decrease gradually with the drawing coefficient increases; it also turns out that increment of friction coefficient between the sheet and the female die surface will result in a quite obvious tendency of increase in unit punch pressure; nevertheless, increment of that between the sheet and the solid granule medium will otherwise minish the unit punch pressure. Furthermore, with the increasing of the initial medium loading height, the unit punch pressure increases, which is resulted from the gradual attenuation of stress transfered by granule medium with the transferring distance grows. Additionally, magnesium alloy sheet as subject investigated, the deep drawing experiment and finite element simulation based on SGMF technology have been conducted, which has verified that the experimental and simulation results are in good agreement with the theoretical one.