The Performance Simulation Research Of Highway Guardrail Terminal Collision Energy Attenuator Device

The number of cars and highway construction mileage has increased, which directly results in the substantial increase in the number of traffic accidents. Accidents caused by collision or scratch between car and the guardrail or car running out of the road lead to serious loss of life. Therefore, improving the existing structures in the form of guardrails and highway guardrail terminal, highway traffic safety research and analysis work facility has very important theoretical and practical value.First, this paper, based on the evaluation criteria guardrail research status and abroad, combined with the actual needs of road protection facilities, research and analysis and concluded that the conditions for China’s road guardrail terminal research, research methods, technical routes and standard evaluation system.Secondly, it analyzed the car with the finite element method guardrail collision course about the basic principles and algorithms for solving equations from finite element, element algorithm, stress correction, the contact time of the collision integral interface and other aspects to consider, and choose the appropriate control of the actual situation equations and arithmetic unit, and put forward the concept of new guardrail terminal, pointed out the advantages of traditional guardrails, and provides a theoretical basis for the following vehicle and guardrail terminal collision energy attenuation device performance study.From the status of highway traffic safety actual needs and innovative perspective, researches and develops a new halves highway guardrail terminal terminal and the cylinder head structure of the collision energy attenuation device and its computer simulation and dynamics research and analysis. Applications dynamics simulation analyzed the collision process under different collision conditions, the kinetic energy of the collision process to get the conversion law, the state of deformation and stress distribution process of formation. Provide a theoretical reference value for conducting future research in the field of traffic safety facilities.According to the evaluation standard guardrail level of crashworthiness analysis and simulation, two highway guardrail terminal collision energy attenuation device of this thesis have a good overall toughness and cushioning terminal, which can effectively absorb collision energy, and effectively attenuate the impact of the collision, and try to avoid vehicles and vehicle passengers due to put too much pressure or pulls guardrail and serious accidents. Highway guardrail terminal of the paper design collision energy attenuation devices with low manufacturing cost, beautiful appearance, easy installation and maintenance, etc. The highway guardrail crash attenuation device is mainly used in highway guardrail W wave plate board, the terminal of the concrete barrier, but also can be applied to the triangle intersection and interchange security zone location. The results have good market prospects.