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首页> 外文期刊>Journal of Materials Engineering and Performance >An Applied Analytical Method for the Forward Extrusion of Metals
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An Applied Analytical Method for the Forward Extrusion of Metals

机译：一种用于金属向前挤出的应用分析方法

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摘要

An applied analytical formulation was developed to deal with the forward extrusion of non-symmetric sections based on the upper bound method. This method of solution has been developed as an alternative to finite element method with the advantages of less time consumption and expense. The deforming region where the material flow occurs was formulated in a new and more realistic fashion by streamlines and stream surfaces. Streamlines and stream surfaces were defined parametrically for the material flow and the development of the kinematically admissible velocity field. The newly developed velocity field incorporated features such that the real physical aspects of the problem were followed more closely than before. The internal, shear and frictional power terms were obtained from the upper bound solution. Using the present method of analysis, the pattern of material flow and the relative extrusion pressure were computed. Results compared to previous works indicated substantial improvements. Experimental and numerical investigations were carried out, and the proposed theoretical model was verified. Close agreement was observed between the analytical results and those from the simulation and the experiment.
机译：开发了一种应用的分析制剂，以应对基于上染色方法的非对称部分的前向挤出。这种解决方案的方法已经开发为有限元方法的替代方案，其中优点减少消耗和费用。通过流线和流表面以新的和更现实的方式配制材料流动的变形区域。流动线和流表面是参数定义的用于材料流动和运动学允许的速度场的开发。新开发的速度场掺入功能，使得问题的实际物理方面比以前更紧密。从上染料溶液中获得内部，剪切和摩擦力术语。使用本发明的分析方法，计算材料流动模式和相对挤出压力。结果与以前的作品相比表明了大量改进。进行了实验性和数值研究，验证了所提出的理论模型。分析结果与模拟和实验中的分析结果和那些之间观察到密切一致。

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