图 4 所示为各模型 参数随应变的变化。假设这些参数为应变的多项式函 数，通过数据拟合显示只有 7 次多项式具有较高的相关系数 R。因此，添加了应变补偿的 Arrhenius 双曲正 弦函数模型能够为后续斜轧穿孔三维热力耦合有限元仿真提供充分的数据支持。

Figure 4 shows the change of each model parameter with strain. Assuming that these parameters are polynomial functions of strain, data fitting shows that only polynomials of degree 7 have a high correlation coefficient R. Therefore, the Arrhenius hyperbolic sine function model with strain compensation can provide sufficient data support for the subsequent three-dimensional thermal-mechanical coupled finite element simulation of skew rolling and piercing.