변형형상 및 변형에너지를 이용한 차량 측면 충돌 사고 재구성

Abstract

The meaning of a collision reconstruction is to identify the cause of accident and to rebuild the conditions before collision using all the information after collision. In this study, a side collision reconstruction algorithm using database based on the deformed shape and deformation energy is suggested. A deformation index and the angle index related to the deformed shape and deformation energy are developed to set the database for the side collision reconstruction algorithm. The indices using the deformed shape are compared to those using the deformation energy. Several side collision experiments and simulations according to the velocity and collision angles are performed. Two small size RC cars are developed to carry out the side collision experiments. Several side collision experiments according to the velocity and collision angles are carried out for establishing side collision database. A high speed camera with 1000fps is used to capture the motion of the car and a sensor (LVDT) is used to measure the deformation of the car after the collision. Side collision simulation using LS-DYNA3D is carried out and compared to the experiments for the side collision accident reconstruction. The side collision algorithm is verified to rear car model simulations.