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首页> 外文期刊>Materials Science Research International >Simulation of the forgin gprocess incorporating strain-induced phase transformation using the finite volume method (part I; basic theory and numerical methodology)
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Simulation of the forgin gprocess incorporating strain-induced phase transformation using the finite volume method (part I; basic theory and numerical methodology)

机译：使用有限体积方法对包含应变诱导相变的异物过程进行模拟（第一部分;基本理论和数值方法）

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A method to simulate the forging process and corresponding strain-induced austenitic-martensite phase transformation is formulated in the Eulerian description and its feasibility is examined. The method uses finite volume meshes for tracking material deformation and an automatically refined facet surface to accurately trace the free surface of the deforming material. By means of this finite volume method, an approach has been developed in the framework of metallo-thermo-mechanics to simulate metallic structure, temperature and stress/strain in the forging process associated with phase transformation. The incremental expression on the formulation of the kinetics equation is derived from Tsuta and Cortes' model. A mixture rule is adopted to evaluate the aggregate flow stress of the austenite-martensite affected by the respective flow stresses and phase transformation. This approach has been implemented in the commercial computer program MSC.SuperForge. This is the first report in which the fundamental framework is stated and the applicability of the developed method is confirmed using experimental results of the forging of a cylindrical billet. Some practical forging applications are demonstrated in the second report.
机译：在欧拉描述中提出了一种模拟锻造过程和应变诱发的奥氏体-马氏体相变的方法，并检验了其可行性。该方法使用有限体积的网格来跟踪材料的变形，并使用自动精加工的小平面表面来精确地跟踪变形材料的自由表面。通过这种有限体积方法，在金属热力学框架内开发了一种方法来模拟与相变有关的锻造过程中的金属结构，温度和应力/应变。动力学方程公式的增量表达式来自Tsuta和Cortes模型。采用混合规则来评估受各自流应力和相变影响的奥氏体-马氏体的总流应力。这种方法已经在商用计算机程序MSC.SuperForge中实现。这是第一份报告，其中陈述了基本框架，并使用圆柱坯锻造的实验结果证实了所开发方法的适用性。第二份报告演示了一些实际的锻造应用。

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