本文对空心件反挤的单位挤压力，采用滑移线法和上限法进行了计算。
The unit pressure in backward extruding hollow billet has been calculated by the slip line method and the upper bound method.
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.
提出了广义滑移线法，将经典滑移线理论拓展到能求解所有二维问题和轴对称塑性变形问题；
The generalized slip-line theory is advanced, which develops the classical slip-line theory and can be used to solve all two-dimensional problems and axisymmetric plastic deformation problems.
研究金属塑性成形规律的理论方法现在有主应力法、上限法、滑移线法、有限元法和有限体积法。
The basic theoretical methods such as Slab method, UBET, Slip Line method, FEM, and FVM have been used in the research of metal plastic forming technology.
研究金属塑性成形规律的理论方法现在有主应力法、上限法、滑移线法、有限元法和有限体积法。
The basic theoretical methods such as Slab method, UBET, Slip Line method, FEM, and FVM have been used in the research of metal plastic forming technology.
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