金属塑性成形过程的时域区段划分

The Period Partition of Metal Forming Process

为了解决三维体积成形有限元数值模拟所面临的技术困难 ,模型元方法从方法学与工程塑性理论方面找到一种解决问题的途径。为使在复杂的三维体积成形过程中能清晰地划分出不同的模型单元 ,并使每个模型单元均有较准确的理论模型与之相对应 ,在划分模型单元前必须对金属塑性成形过程在时域上划分出不同的时域区段。文中讨论了金属塑性变形过程时域区段划分的原理与方法 。

For solving the technical obstacle faced in 3 D finite element numerical simulation of bulk forming, the model element method gives us a solution in methodology and engineering plasticity theory. For distinctly dividing up different model elements in complicate process of bulk forming and making each model element correspond with theoretic model precisely, different periods of metal forming process must be determined prior to model element's partition. This paper mainly discussed the principle and method of period partition of metal forming process and presented several examples of period partition in metal forming process.