【摘要】 曲线拟合是实验数据处理的基本方法之一。将曲线拟合方法归结为有理论模型和无理论模型两类,据此,对曲线拟合的一般思路和重要方法进行了讨论。对两类方法进行了比较,并将它们联合用于对材料流变状态的速率-微分型本构模型的曲线拟合。更多还原

【Abstract】 Curve fitting is one of the basic methods in experimental data processing. In this paper, the methods of curve fitting are classified by existence of theoretic model. According to the above (classification), the paper discusses the general and important methods of curve fitting. Then it compares the two species of method and addresses a new method based on neural networks and least square. Finally, the new method is used for curve fitting of rheologic modelvelocity-differential constitutive relations.更多还原