UMAT/VUMAT for linear, bilinear and piecewise Drucker-Prager models

These are the user material subroutines (UMAT/VUMAT) in Abaqus for linear, bilinear and piecewise Drucker-Prager models, where strain hardening can be considered. The UMAT/VUMAT are created separately for each case where the finite element model is two-dimensional and three-dimensional.本数据集收录了Abaqus软件中适用于线性、双线性及分段式德鲁克-普拉格模型（Drucker-Prager model）的用户材料子程序（UMAT/VUMAT），此类模型可考虑应变硬化效应。针对有限元模型为二维及三维的各类场景，我们分别开发了对应的UMAT/VUMAT子程序。