| Undoubtedly, traffic environment of the world and the life patterns of peoplehave been changed a lot since the invention of motor vehicle. As long as thedevelopment of technology in science, quality and standard of life level up, vehiclesbecome essential tools of transportation as well as the symbol of the civilization ofsociety. Meanwhile, motor vehicle brings a series of safe problems, the most terribleof which is traffic accidents. As is often said that the car accident fierce as a tiger.The casualties and property loss caused by traffic accidents increase year by year,therefore, how to avoid or ease the casualties in car collision process when the trafficaccident happen become the most important task of the passive and safe car functionstudies.Reappearance of a traffic accident may help people to study and summarizeregulation. It’s also useful when analyze traffic accident process or assurance theresponsibility in the accident. So it has become nowadays a social important scienceresearch direction. The occurrence of the traffic accident is usually a synthetic andcomplicated process. In each case, the tragedy caused by overspeed is nothing new.Be showed from this, it is important to exactly calculate the speed of traffic accidenthappened. Is positive as it does, how accurately reckon a car’s speed before collidingfor exactitude processing the traffic accident is a key. And in the process of colliding,there is a close relation between the collision deformation and the collision speed. Ithas great influence on the passengers’ safety. At the same time, the crush stiffness justcan be as a token of collision deformation, therefore, the research of the crushstiffness to the car collision contributes to the emulation of accurate realizationcollision process. In a word, it has very important realistic meaning that researchingon the collision speed, the collision deformation, the crush stiffness, etc, for the safetyof vehicle and to reduce casualties’ rate.This text is mainly about the theory of crush stiffness and how to calculate themin various collision modes of cars. The research here is based on the reappearance oftraffic accidents. It selects data in recent years to carry on a simple analysiscalculation, and to get the variety trend and regulation. |
