土本构模型参数的图象程序确定法

Picture-Program Method for Determining Parameters of Soil Constitutive Models

本文提出了一种确定土的本构模型参数的新方法。该法借助于计算机图象程序,通过采用某个模型计算出的应力应变曲线与试验曲线的拟合,直接在屏幕上调整和确定模型参数。在确定参数时,还可以兼顾不同的应力路径。用该法编制了包括5种本构模型在内的图象程序,程序计算实例表明该法简洁直观、准确实用。

A new method for determining the parameters of soil constitutive models is presented. With the help of picture-program, the method can be used to adjust and determine the parameters of varied models directly on computer screen by the coincidence of the calculated stress-strain curves of certain model with the exeperimental ones. Varied stress paths can be taken into account in determining parameters. With this method, the picture-program has been worked out which contains five different constitutive models. Examples of the program shown that the method is succinct, speedy, accurate and practical.