ABAQUS 有限元子程序，粘弹性本构，蠕变应力松弛测试拟合结果 cohesive 粘接单元，用于分层分析的子程序，帮助初学者快速掌握ABAQUS的内聚体单元应用(ABAQUS umat creep stress relaxation fitting result Cohesive bonding unit, used for hierarchical analysis of the subroutine, to help beginners quickly grasp the ABAQUS