If you use strain controlled condition, you will receive the post peak behavior. If stress controlled boundary is used it will terminate after peak.

Thanks for response sir.

In material property : I entered stress strain values 

For prestressing: Inistate,define commands I used for modeling 

But I don't know how to proceed by strain control method . Sir can you please explain in detail..!

If you need to go for post peak then you should apply your load as a displacement controlled loading (apply a displacement instead of force).