| Title |
Crashworthiness Study of Sliding Post Using Full Scale Crash Test Data |
| Authors |
장대영(Jang, Dae-Young) ; 이성수(Lee, Sung-Soo) ; 김기동(Kim, Kee-Dong) ; 성정곤(Sung, Jung-Gon) |
| DOI |
https://doi.org/10.12652/Ksce.2020.40.1.0001 |
| Keywords |
충격;충돌실험;강결지주;슬라이딩 지주;감충(堪衝)성능 Impact;Crash test;Rigidly fixed post;Sliding post;Crashworthiness |
| Abstract |
Medium to large post structures installed along the roadside without proper protection can lead to serious vehicle damage and occupant injury at the impact. In North America and Europe, splitting systems such as slip base or breakaway device are used to reduce impacts. But the system has the risk of secondary accident when the splitted post falls down to the traffic or pedestrian. Sliding Post have been proposed as a way to solve this problem. By studying the crash test results of the 1.3ton and 0.9ton vehicle with 60 km/h and 80 km/h to a Rigidly Fixed Post (RFP) and Sliding Post (SP), danger of the conventional RFP and crashworthiness of the SP have been proven. While collision analysis only from the acceleration measured at the center of the vehicle assumes the motion of the post is the same as that of the vehicle, in this paper, by adding high speed film data to the analysis with vehicle acceleration could have separate the post motion from the vehicle motion. It gives better explanations on the movement of post and vehicle in each distinctive time step and provides basics to the crashworthy post design. |