The role of anticollision beam in automobile design is against car after suffering from shock when the first barrier, it will auto before and after the main load-bearing structure in connection into a whole, no matter which position impact in a positive, anticollision beam has great impact in the first time and disperses shock load to the overall mechanical structure of car. For anticollision beam is fixed on the vehicle frame, under a certain impact, will be on both sides of the bearing components to inside at the same time, the common under impact load, achieve the goal of strengthen local intensity and stiffness in the moment, so as to make the car deformation occurs only in the engine compartment or trunk parts, and ensure the cockpit would not happen too much deformation (except in the case is beyond its limit). Increase the deformation of the process of time, so that the impact of the release of the time is relatively long, which can greatly reduce the impact of the vehicle personnel to bear, in addition to the joint action of the vehicle safety belt and other protective facilities, will reduce the degree of injury caused by the failure of the personnel
In the manufacturing of automobile products, gradually increasing the application proportion of aluminum alloy materials is the inevitable trend of automobile lightweight. The development of aluminum alloy anti-collision beam is one of the main ways to realize automobile lightweight. After design verification, aluminum alloy anti-collision beam will replace steel anti-collision beam.
1. According to the simulation analysis results, the energy absorption of aluminum alloy anti-collision beam in front collision is better than that of steel anti-collision beam, which meets the design and application requirements.
2. Compared with steel materials, aluminum alloy has the advantage of low density. Using aluminum alloy structure instead of traditional steel structure can reduce the mass of front anti-collision beam by 30% ~ 50%, and the lightweight effect is remarkable.
3. By comparing the application of aluminum alloy anti-collision beam between joint venture vehicle enterprises and independent vehicle enterprises, it can be found that the use of aluminum alloy anti-collision beam is the future trend of automobile lightweight.
4. Compared with the energy absorption ratio of anti-collision beam, the analysis results show that the energy absorption capacity of aluminum alloy anti-collision beam is significantly better than that of steel anti-collision beam, which is helpful to improve the safety of the whole vehicle.