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보행자 보호 Flex PLI 다리 모형의 십자 인대 거동 해석
김한승(Hanseung Kim),이용훈,박재원(Jaewon Park),Jeongkeun Khim 한국자동차공학회 2015 한국자동차공학회 부문종합 학술대회 Vol.2015 No.5
European New Car Assessment Program (EuroNCAP) has applied Flexible Pedestrian Legform Impactor (Flex-PLI) instead of Transport Research Laboratory (TRL) legform impactor as pedestrian protection lower leg assessment since 2014. The TRL legform focused on knee acceleration and bending angle when legform impact to vehicle, but in case of Flex-PLI, ligament elongation is main measuring factor as leg injury. To find condition that effect to Anterior Cruciate Ligament (ACL) and Posterior Cruciate Ligament (PCL) behavior, thickness and density of energy absorber (EA) are considered as control factor. Pedestrian protection assessment will be conducted to CAE analysis by LS-Dyna.
김관희(Guanhee Kim),임종훈(Jonghun Lim),서관호(Kwanho Seo),김정근(Jeongkeun Khim) 한국자동차공학회 2013 한국자동차공학회 학술대회 및 전시회 Vol.2013 No.11
91 domestic vehicles have been tested according to Korean New Car Assessment frontal crashworthiness test protocol, and 52 out of the 91 vehicles are rated 5 star, which means the highest frontal crashworthiness. Only 12.5% of the test vehicles were rated 5 star before 2002 while 73.1% of the test vehicles were rated 5 star since 2003. The portion of 5 star rated vehicles are increased by 6 times during the last ten years. Even though vehicle frontal crashworthiness improved, the deaths in frontal crash impact do not decreased. In 2012, 329 occupants were died in frontal crash, this is 17.1% decreased compare to that of 2002, but the deaths in frontal crash occupies about 15.7% of the vehicle to vehicle deaths and this is 1.3%P higher than that of 2002. This figures show that the KNCAP frontal crashworthiness test protocol does not enough to reflect the real world frontal crash accident. In this study we conducted small overlap frontal crash according to IIHS test protocol, which occupies high portion of deaths in frontal crash, to evaluate vehicle frontal crashworthiness.