Study on side collision reconstruction using database based on deformed shape information

A side collision reconstruction algorithm using a database based on the deformed shape information from experiments is suggested. A deformation index related to the deformed shape is developed to set the database for the side collision reconstruction algorithm. Two small-sized model cars are developed to carry out the side collision test. Several side collision tests according to velocities and collision angles are performed for establishing side collision database. A high speed camera with 1000fps is used to capture the motion of the car. Side collision reconstruction algorithm is developed and applied to find the collision conditions before the accident occurred. Several collision cases are tested to validate the database and the algorithm. A database from computer simulation is verified with experiments. According to comparing errors between simulation and experiment, it is satisfied within 6.6%. This paper was presented at the 4th Asian Conference on Multibody Dynamics(ACMD2008), Jeju, Korea, August 20–23, 2008. Dr. Jeong-Hyun Sohn received his B.S. degree from Pusan National University (1995), M.S. from PNU (1999), and Ph.D. from PNU (2002). He is currently an associate professor in the department of Mechanical Engineering at Pukyong National University in Busan, Korea. He is currently serving as a board member of dynamics and control division, KSME. His major area is vehicle dynamics and flexible multibody dynamics. Dr. Wan-Suk Yoo received his B.S. degree from Seoul National University (1976), M.S. from KAIST (1978) and Ph.D. from University of Iowa(1985). He is professor at Pusan National University, and currently serving as a vice president in KSME. His major area is vehicle dynamics and flexible multibody dynamics.