一种新的含一至六阶塑性张量的各向同性金属屈服函数

Yang Feng, Liu Jun, W. ShaoHua, W. Xiaoyan
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引用次数: 1

摘要

屈服函数是建立塑性本构关系和分析塑性变形的重要方法。因此,本文导出了包含一至六阶塑性张量的各向同性金属的屈服函数,将一般屈服函数在其泰勒中展开。同时,本文对塑性张量进行了无迹、完全对称和客观的分析。各向同性金属的屈服函数可以退化为拉压屈服性能相同和不同的屈服函数。最后,通过Lode试验的结果,证明了该屈服函数在具有相同和不同拉压屈服特性的金属材料中是非常适用的。该屈服函数中包含2个材料参数,形式简单,具有较高的工程应用价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A New Yield Function on Isotropic Metals Included One to Six-Order Plastic Tensors
The yield function is very important in establishing the plastic constitutive relation and analyzing the plastic deformation. Hence this article derives the yield function on isotropic metals included one to six-order plastic tensor, expanded of the general yield function in its Taylor. As well, the plastic tensors are analyzed by traceless, totally symmetric and objectivity in this article. And the yield function for isotropic metals can be degenerated to the one for identical and different property on tension-compression yield. Finally, by means of the results of Lode test, it is proved that this yield function is very suitable in the metal materials, which had the identical and different property for tension- compression yield. And there are 2 material parameters in this yield function, hence, the form is simple and had higher value in engineering.
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