In bulk deformation processes such as forging, rolling, extrusion, and wire drawing there is an intentional change in the thickness or the lateral dimension of the workpiece.
大部分的变形过程如：锻造，轧制，挤压和拉丝都有同样的过程就是有意使工件的厚度或外部尺寸发生变化。
The bulk metal forming processes are calculated and analyzed by using a multi - step finite element method (FEM) based on deformation theory of plasticity.
运用一种基于全量理论的多步有限元方法计算分析了金属体积成形过程。
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