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정면충돌 시 복합상해지수를 사용한 에어백 전개시점 평가 방법 개발
송기훈(Kihoon Song),김태웅(Taewung Kim),최형연(Hyung-Yun Choi),김상철(Sang-Chul Kim),홍석호(Seok Ho Hong),임장묵(Jang-Mook Lim),신세리(Seri Shin) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
This study aimed to develop the evaluation method for air bag deployment threshold during frontal crashes using injury severity score (ISS) and a whole-body functional capacity index (WBFCI) using a computational human surrogate model and real-world crash data. National Automotive Sampling System Crashworthiness Data System (NASS-CDS) 2006-2015 were queried for occupants involved in frontal crashes. 449 cases of AIS2+ unique injuries were derived, and the resulting major injury mechanisms were assigned. To derive WBFCI and ISS from the frontal impact analysis results, A finite element mid-size male occupant model (Global Human Body Model Consortium-owned GHBMC Model, v4.5) was divided into 21 body regions and the output was defined so that the probability of injury is known in each body region. Based on the probability of injury derived from the analysis results. The first Monte Carlo sampling was conducted to create virtual passengers with the abbreviated injury score (AIS) severity level for each body region, and the second Monte Carlo sampling was performed so that FCI and ISS could be calculated from virtual passengers with AIS patterns for each body region. The frontal crash simulations were performed in a simplified sled model for four different delta V(ΔV) with or without airbags when the belt was equipped. Then, the validity of this method was examined through comparative verification with real-world crash data.
THOR 더미 흉부 압입시험 결과에 기반한 최적의 안전벨트 경로 제안
박현재(Hyunjae Park),조아현(Ahyun Cho),김태웅(Taewung Kim),조민기(Mingi Cho),이태희(Taehee Lee),이수열(Sooyul Lee),진욱(Wook Jin) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
This paper investigated an optimal belt path for minimizing maximum chest deflection of THOR-M50 dummy. To understand structural characteristics of the thorax region, a series of thorax compression tests were performed. Based on the test results, an optimal belt path, which path through the mid-point of the upper IR-TRACC was suggested. The optimal belt path, then, was verified through belt pull tests. Since the belt pull experiment was performed under a simplified static condition, the validity of the optimum belt path need to be verified under dynamic loading conditions such as sled or vehicle crash tests.