Abaqus, element removal

Hi everybody,

 is there anyone who is familiar with element deletion or removal to predict crackopening in RC member model in ABAQUS?

I've made a 2D model of RC beam in abaquse with brittle cack properties and brittle failure but I could not get any result. Can I make my model by concrete damage plasticity and using abaqus standard to apply element removal?

I will really appreciate anyone who helps me to solve my problem.

 Thanks in advance