粘弹性材料常数的简便拟合法

Simple Curve Fitting to the Constant of Viscoelastic Material

文献 [1]提出了描述粘弹性材料应力应变关系的公式 ,经过简化 ,公式中有四个待定材料常数。为了避免曲线拟合确定四个待定材料常数反复挑选初值的麻烦 ,本文提出了用简便拟合法确定这四个常数的原理 ,导出了相应公式 。

The formula describing the relation between stress and strain of viscoelastic material is founded in the literature \ which has four unknown constants in it after predigestion. This paper presents the principle of calculating the four constants by simple curve fitting to avoid troubles when choosing the initial values of the constants and the corresponding formula is educed. The method is very suitable to program computing procedures.