This project is about the current military situation in the World, which is specific with asymmetric warfare. In this specific warfare, improvised explosive devices situated under or near a road are often used. The project describes formation and spread of a shock wave after blast of an explosion. It specifies negative effects of the blast of an explosive device directly situated under a vehicle, vulnerabilities for the occupants or the vehicle structure. The main goal of this project was aimed at the numerical simulations of different types of vehicles bottoms. The Simulations are made by a finite element method in program called LS-DYNA, based on the conditions from STANAG 4569 and AEP-55 Volume II. In the end, there are some specific comparisons of the solutions for the safety of the occupants, which include the solutions of the vehicle bottom.