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首页> 外文期刊>World Journal of Mechanics >Finite Element Simulation of a Doubled Process of Tube Extrusion and Wall Thickness Reduction
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Finite Element Simulation of a Doubled Process of Tube Extrusion and Wall Thickness Reduction

机译:管材挤压和壁厚减小双重过程的有限元模拟

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This research deals with the forward extrusion process of tubes. In this process, a piercing process was carried out on the billet to produce the tube, followed directly by a reduction in the wall thickness. A specific geometrical shape for the piercing zone and the wall thickness reduction zone were chosen and designed. The effects of the redundant shear strain and the magnitude of the extrusion load were investigated and simulated with the finite element method using Q Form software program. Lead was used as model materials since (if the experiments were carried out at room temperature) it has the similar behavior of the steel at high temperature. The results obtained have shown that at the piercing zone, the lowest values of the extrusion load, the redundant strain, the total strain and the finite element effective strain were when a piercing tool (mandrel) of (C = 1.1) was used. While, at the die zone, the lowest values of the extrusion load, the redundant strain, the total strain was when a die of (C = 0.9) was used.
机译:这项研究涉及管的正向挤压工艺。在该过程中,在坯料上进行穿孔处理以生产管,然后直接减小壁厚。选择并设计了刺穿区域和壁厚减小区域的特定几何形状。利用有限元方法,使用Q Form软件程序研究并模拟了多余的剪切应变和挤压载荷大小的影响。铅被用作模型材料,因为(如果在室温下进行实验)它具有与钢在高温下相似的性能。获得的结果表明,在穿孔区域,当使用(C = 1.1)的穿孔工具(心轴)时,挤出载荷,冗余应变,总应变和有限元有效应变的最小值最低。而在模具区域,挤出载荷的最小值,冗余应变,总应变是使用(C = 0.9)模具时的总应变。

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