用于模拟混凝土单元的弹塑性模型，并有损伤变量，在ABAQUS中umat中输入弹性模量，泊松比与屈服应力即可。-The elastic-plastic model for the simulation of concrete unit, and the damage variable in the ABAQUS umat enter the elastic modulus, Poisson' s ratio and yield stress can be.

abaqus可用的用户子程序，可以考虑混凝土弹性模量随时间，应力变化等情况下的徐变。可以考虑徐变恢复。-creep of concrete

计算多材料单元平均应力应变,用于提取计算等效弹性模量 泊松系数(Calculate the average stress-strain of multi-material elements)

用Python脚本实现abaqus 材料参数中的弹性模量随坐标变化。(With Python scr ipt, the elastic modulus of ABAQUS material parameters varies with coordinates.)

使用umat计算蔡吴失效准则，计算失效指数If，弹性模量和强度参数见表3.1.(Compute the Tsai-Wu failure index IF on each layer of Example 3.8 (p. 151) using a UMAT subroutine, available in umatS8R5.for. The elastic moduli and strength values for the lamina are given in Table 3.1)