USNCAP에 대응하는 반응표면법을 이용한 조수석 안전구속장치 최적화

Abstract

Safety performance of a new car is evaluated through USNCAP and their results in the star rating areprovided to the consumers. It is very important to obtain high score of USNCAP to appeal their performance toconsumers. Therefore the car companies have made the effort to improve their car safety performance. These effortsshould satisfy the demand not only to get high score but also to pass the FMVSS, NHTSA regulations on safety. Hugenumbers of car crash tests have been conducted on these bases by car companies. However physical tests spend toomuch cost and time, as an alternative way, the simulation on the car crash could be a solution to reduce the cost andtime. Therefore the simulations have been widely conducted in car industry and various researches on this have beenreported. In this study, restraint system had been optimized to minimize the injury of female passenger. Belted 5th%ilefemale frontal crash test was selected from various test methods of USNCAP for the study. Initial velocity of the testwas 56km/h. The combination injury probability of USNCAP was selected as an objective function and the injury limitvalue, which was defined in FMVSS, was set to an optimization constraint. Many researches that were similar to thisstudy had been conducted, however most of them had limitation that interaction between airbag and safety belt had notbeen considered. Contrary to these researches, the interaction was considered in this study.