umat duncan 2D 用于abaqus本构模型二次开发-abaqus umat duncan 2D constitutive model for secondary development

在Fortran开发环境下实现土的邓肯E-B本构关系模型-Create Duncan E-B model soil constitutive relationship

该程序中包含邓肯张模型在C++中二次开发的具体过程，将其中的代码直接在VC中生成dll文件即可在flac中加以应用-The program contains Duncan zhang model in c++ specific process of secondary development, the code directly in the VC to generate DLL files as well as applications of flac