用于有限元软件Abaqus分析材料断裂的粘结区模型（CZM）子程序，由著名学者高彦飞编程，具有很高的参考价值。-ABAQUS allows the addition of a variety of user subroutines. We define a user element by UEL. Information of element and nodal displacements can be obtained from ABAQUS, and we update the stiffn

用于在abaqus中定义cohesive单元的本构行为，通过uel去进行二次开发(It is used to define constitutive behavior of cohesive unit in ABAQUs; moreover, uel is employed to develop cohesive unit)