基于遗传算法的岩土本构模型辨识

IDENTIFICATION OF THE GEOMATERIAL CONSTITUTIVE MODEL BASED ON GENETIC ALOGRITHM

通过对岩土本构模型辨识机理的分析 ,提出了基于遗传算法的本构模型辨识方法 ,并用两个工程实例对该法进行了验证。

Through analyzing the identification mechanism of the geomaterial constitutive model, some problems of the existing identification methods based on the traditional system identification theories are revealed. And the new system identification theory--genetic algorithm (GA) is applied to solve this complicated nonlinear system identification problem of the geomaterial constitutive model. Accordingly,a new algorithm to identify the constitutive model based on genetic algorithm is proposed. As an initial study, the identification of the constitutive model is only researched for given model category. At last, this algorithm is verified with two engineering examples. And the results show that this algorithm is very valuable for identification of the geomaterial constitutive model.