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저속 후방 추돌시 BioRID-Ⅱ를 이용한 목 상해 지수 측정에 관한 연구
유한규(Hankyu Ryu),김영은(Youngeun Kim),홍정화(Junghwa Hong),윤경한(Kyonghan Yoon),홍승준(Seungjun Hong) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
Although typically classified as AIS 1, whiplash injuries continue to represent a substantial social problem with associated costs estimated at over $1 billion annually. The primary objective of this study was to determine the effects of seat positions(seatback angle, headrest height) on risk for whiplash injury in low speed(ΔV=4~10㎞/h) rear-end impact. To accomplish this, rear impact seat carriage tests and simulations were conducted using the BioRID-Ⅱ dummy seated in a mass production seat, which allowed for the adjustment of seatback angle and headrest height. Neck injury criteria(NIC, N<SUB>㎞</SUB>) were then compared for different ΔV and seat positions.
저속 후방 추돌시 인체 크기가 목 상해 지수에 미치는 영향 분석
유한규(Hankyu Ryu),김영은(Youngeun Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
According to the automobile insurance data, most of the victims of rear-end accidents experienced a whiplash injury classified as AIS 2 or less. To date, mainly three different neck injury criteria are proposed: NIC, N㎞ and LNL. The primary objective of this study was to determine the effects of the occupant size on the neck injury criteria in low speed(ΔV=10㎞/h) rear-end impact. To accomplish this, rear impact simulations were conducted using the MADYMO human facet occupant model(50th percentile male) and the three scaled occupant models seated in a mass production seat. Neck injury criteria(NIC, Nkm, LNL) were then compared for the different occupant models.
저속 후방 추돌 시험시 가속도 측정 장치가 목 상해 지수에 미치는 영향 분석
유한규(Hankyu Ryu),한인석(Inseok Han),김영은(Youngeun Kim) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
According to the automobile insurance data, most of the victims of rear-end accidents experienced a whiplash injury classified as AIS 2 or less. The primary objective of this study was to determine the effects of the accelerometer array on the neck injury criteria in low speed(△V=4, 6, 8km/h) rear-end impact test. To accomplish this, rear impact simulations were conducted using the MADYMO human facet occupant model(50th percentile male) and the occupant models equipped accelerometer array. Neck injury criteria(NIC, N㎞, LNL) were then compared for the different occupant models.
벨트 하중 상해 예측을 위한 내장기관이 포함된 고령자 흉곽 모델 개발
한인석(Inseok Han),유한규(Hankyu Ryu),김영은(geun Kim),윤경한(Kyonghan Yoon),채수원(Soowon Chae) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Thoracic injury from restraint loading is the principle causative factor of death, which was shown to be particularly significant for older drivers. The purpose of this study is to characterize thoracic response to belt loading of older drivers by using a thorax finite element (FE) model. The adult FE thorax model and aged model were developed to carry out this study. The cortical thickness of the rib was differently assigned to each 9 sections(anterior, lateral, posterior, inner, outer, upper and lower). The internal organ model contains the lung, heart, trachea, aorta, vena cava and midriff. Self contact and general contact were assigned to each organ. The adult FE model and each rib were validated by comparing model response with available experimental cadaver test data. The quantified patterns of age-related shape and material changes were applied to the adult model(age 38) to develop the aged model(age 65). The simulations showed that the aged model more affected by belt force than adult model. Stress of the thorax was increased, because of larger rib angle due to aging effect. Furthermore, failure strain was reduced due to the material properties change.