Auto buffer and operating the vehicle collision safety device

The rapid development of transportation, making the road maintenance and construction to become regular, the traffic impact of large events. In this paper, highway maintenance and construction zone traffic safety research, analysis and comparison of the buffer in the collision safety device on the impact energy absorption of collision impact injuries of personnel in order to enhance the conservation area of traffic safety.Highway Maintenance area for heavy vehicles, when driving at high speed and high speed strayed into conservation areas, and heavy construction vehicles collide, is undoubtedly a suicidal act. Based on vehicle and occupant injury, the rear of the vehicle safety device to install a buffer and reduce the collision damage to the vehicle, as well as damage to the vehicle occupant, to improve safety and reduce the purpose of social property. Analysis of vehicle collisions with the buffer performance of safety devices, using the model of virtual experiment method to simulate the entire collision. Simulation process, the first study the structure of the buffer safety device designed to get the feasibility of the program, based on previous research on the collision information barrier and safety regulations, the use of CATIA software, the basic model of the design of safety devices, application of ANSYS analysis software for finite element analysis of several models, will be K file into LS-DYNA in the buffer by the relevant safety devices and vehicle energy absorption characteristics of center of mass acceleration curve, based on the simulated results, select the best buffer security device structure. Non-linear large deformation during the collision areas, in the simulation process, to keep the traffic and buffer the same basic parameters of safety devices, change the vehicle's impact velocity and angle of the circumstances, the impact of the buffer safety devices, and based on European EN1317 safety standards, safety devices and further validate the buffer feasibility in practical applications. In the crash simulation process, safety devices based on the original buffer structure, analysis and comparison of different buffer structures on vehicle safety devices peak acceleration of mass center, as well as safety devices, the impact energy absorption characteristics, select the best safety device structure of the buffer for the future of the real vehicle collision to provide some validation program. 

Keywords: frontal impact, the buffer safety devices, energy absorption characteristics, finite element, nonlinear