Behavior of Tubular-Hat Structure Subjected to Low Velocity Impact Three-Point Bending

Abstract

Crashworthiness is one of the most important criteria in vehicle market. A good crashworthiness avoids being injury for the passenger. There are many accidents happen every day, the most dangerous collision is in horizontal. It can make the passenger injured or died easily, because the distance from body frame to passenger in cabin is very narrow. Therefore, this study is conducted to explore the behavior of top – hat and double - hat structures subjected to three – point impact bending by using analytical and numerical methods. The length of flange is not effected to bending resistance with the same perimeter of top-hat structure. The mean force of double – hat section is higher than the top – hat so that the capability to absorb energy of double – hat structure is better.