本文用变形功法和滑移线法分别求解变薄拉深力，并将两种方法的计算结果进行了比较。
The thinning drawing force is calculated through deforming work method and slip-line method irrespectively, and the results are compared in this paper.
利用连续速度场解析了筒形件变薄拉深过程拉深力，并获得其上限解析解。
A continuous velocity field is established and applied to the ironing process, and an upper-bound analytical solution is obtained.
利用连续速度场解析了筒形件变薄拉深过程拉深力，并获得其上限解析解。
A continuous velocity field is established and applied to the ironing process, and an upper-bound analytical solution is obtained.
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