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Which method to model RC wall rested over ground subjected to blast load considering sliding/overtur

Which method to model RC wall rested over ground subjected to blast load considering sliding/overtur

Which method to model RC wall rested over ground subjected to blast load considering sliding/overtur

(OP)
Dear Colleges, 

I modeled an RC wall that is subjected to lateral blast pressures using surface to surface contact, where a finite thin part of the underlying soil modeled as an elastic material with only 50mm thick. The bottom surface of that part constrained from movement in all directions, and upper surface connected to the bottom of wall base using surface-to-surface contact using a high coefficient of friction equals to 0.8. After the solution of the dynamic explicit problem, it is found that the wall is moving (slide and overturn) without stoppage till the end of step time! even when subjected to very low levels of loads? When the step time increased, the wall still moves till the end of extended time. I'm expecting that wall shall move certain distance then stop. Is the type of contact i'm using suitable? and how to model such contact by another ways?

Kindly help

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