Simulation and Optimizations of Truck’s Cabin Structure Exposed to Explosion

One of the casualties in war zones is casualties due to the explosion of explosives near vehicles. The important issue in these vehicles isn’t to seriously injure the occupant during the explosion. It is necessary to optimize of the cabin structure of heavy vehicles to achieve high-performance vehicles. In this article, the 3-d model of the truck is created to study the effect of exploding near and under a truck and to optimize the truck cabin. The model is meshed by square and 10 mm^2 elements. Then, explosion tests are simulated in two situation: explosion under the vehicle and explosion near the truck according to AEP-55. In the explosion test under the car,using 4 kg TNT equivalent on the ground surface and In the test near the truck, using 8 kg TNT equivalent at the distance of 3 meter at the same level by under cabin surface and the amount of occupant injuries are checked. For meeting the requirements of the explosion and because this truck platform is a commercial vehicle, vehicle floor panels’ material and thickness are modified. The thickness of important parts include 1. Side floor panel 2. Middle floor panel 3. Front side panel 4. Front Panel 5 Door Panel are optimized in 16 modes and Only 7 modes meet the requirements of the explosion test under the vehicle. The optimal mode is 571.39 kg which has decreased 79.72 kg compared to the first mode meet AEP-55 requirements and has decreased 3.31kg compared to the initial mode.