Research And Optimization Of Anti-ballistic Performance Of Vehicle-mounted Shelter

The vehicle-mounted cabin is a mobile compartment which is used to provide specific conditions and conditions required for normal work and equipment.The bulletproof performance of the large board of the shelter determines whether the vehicular shelter can be used in anti-terrorism or combat.Based on the situation that some shelter plate can not meet the specified bullet proof requirements,this paper proposes a new type of lightweight composite material to carry out the structural design,optimization and test verification of the vehicle borne shelter plate.Firstly,this paper analyzes the development status and main problems of the shelter at home and abroad,introduces the main research contents of this paper,expounds the basic principles and research methods of the penetration problem,puts forward the principles to be followed in the design of the large plate of the bulletproof shelter,carries out the chassis selection of the vehicle shelter and the structural design of the shelter.Secondly,the three-dimensional model of the shelter plate is simplified and the finite element model of the aluminum/polyurethane composite target plate is established.Through the finite element simulation,the bulletproof performance of the shelter plate is analyzed and it is concluded that the aluminum/polyurethane composite target plate cannot meet the specified bulletproof requirements.In response to this problem,the ceramic/fiber composite target plate is designed based on the collaborative action of ceramic panel/fiber back.The finite element simulation analysis shows that the composite target plate can effectively protect single and multiple projectiles.Meanwhile,the influence of the size of composite materials and different combination of ceramics on the bulletproof performance of composite target plate is studied,which provides an important reference for the structural optimization of composite target plate.Finally,the optimal Latin hypercube test design method and NSGA-II algorithm are used to optimize the structure of the vehicular shelter panel and the optimization scheme is obtained:the thickness of Si C is 4.54mm,the thickness of Al₂O₃ is 4.50mm,the thickness of aramid fiber is 7.17mm.Through simulation analysis and experimental research,it is concluded that the optimized scheme improves the bulletproof performance of ceramic/fiber composite target plate and the bulletproof performance of the optimized ceramic/fiber shelter plate meets the specified bulletproof requirements.