hello everyone

now I use XFEM to simulate the crack of concrete, there are three options for damage evolution: linear, exponential and tabular. when I choose linear to define the damage, I can get a good results, however, when I choose tabular, evebthough the tabular numbers also define a linear damage evolution, a completely wrong reslts is obtained, the stress in the cracked elements can't decrese as the tabular defination. what should I do when use tabular to define the damage evolution? thank you for your kind help!

Fan ZHANG

the setting of a linear evoluation

​​​​​​​the result by a linear setting

the setting of a tabular evoluation

the result by a tabular setting

Abaqus ​​​​​​​