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스케일링 방법과 해석을 이용한 고령자 가슴상해기준 개발에 관한 연구
한완희(WanHee Han),김혜영(Hyeyoung Kim),김기성(KiSeong Kim),윤영한(YoungHan Youn) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
According to 2005 national census and the statistical analysis of traffic accident from nation policy report, 65 year older population and fatalities are on the rapid increase. Especially elderly driver and passengers have a disproportionately higher crash involvement rate and commonly sustain more severe injuries than the other generation. The current frontal impact regulation of Korean safety standard is based on the FMVSS208 to protect the motor vehicle occupant in the event of frontal crash type accidents. The injury criteria utilized in the regulation is based on Hybrid 50%ile dummy. In this study, the thorax injury criteria and the biomechanical chest impact response(F-D corridor) for Korean elderly were derived from the scaling method that takes into account the differences in size and material properties of the rib bone between adults and elderly. Also the Korean elderly Hybrid III simulation model was verified using the chest impact response scaled from response requirements of the Hybrid III 50%ile dummy.
국외 사체 시험 결과 분석과 스케일 방법을 이용한 고령자 가슴상해 기준연구
한완희(Wanhee Han),윤영한(YoungHan Youn),최문영(MoonYoung Choi) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The study introduced two methods for deriving the thoracic injury criteria. First, the scaling method that was developed by H. J Mertz is very simple. The scaling method has been used to develop injury criteria of other dummies such as Hybrid Ⅲ 5%tile, 95%tile and Hybrid Ⅲ child dummy. In order to use the scaling method, the size scale factor has been defined by the anthropometry data of Korean elderly as over 65 years old and the material scale factor has been referenced by the Kent’s paper. The second method to use the injury risk curve is more complex than the scaling method because the statistical analysis and a lot of the test results of PMHS were required. The PMHS test don’t be conducted in Korea, so the results in foreign countries have been analyzed to derive the thoracic injury risk curve using the logistic regression.
김기성(Kiseong Kim),한완희(Wanhee Han),윤영한(Younghan Youn),황범진(Beomjin Hwang) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Recently automobile market has been watched with deep concern about environmentally friendly vehicle for reducing environmental pollution. The environmentally friendly vehicle is excellent in energy efficiency ratio and the least vehicle in automobile exhaust fumes. The one of cause is weight in the energy efficiency ratio and exhaust fumes, etc. Because the weight of vehicle is getting heavier, the energy efficiency ratio becomes worse and the amount of exhaust fumes increases. In this paper, the magnesium seat back frame was designed to reduce the weight and improve the strength using sensitivity analysis. The magnesium seat is lighter than formal seat and better in anti-vibration. Also it is excellent for interception of electromagnetic waves, so it will be applied usefully in the electronic automobile. However the maximum stress of magnesium is lower than other material like steel so we studied to satisfy the qualification which is raised the strength and minimized the weight of the seat frame. A primary objective of the study is to develop a new magnesium seat back frame for the passenger car. Back moment analysis of the conventional steel seat frame was conducted as a base model. Back moment strength with the developed magnesium seat back frame were compared to those of the base model. Then this paper describes a study that was conducted to determine sensitivity of several design factors for finding main design factors to light weight and sustain strength as steel frame using the matrix of orthogonal arrays. The design factors that may have major effect on FEM simulations were selected and orthogonal array was set up for analysis. By the design matrix, the magnesium seat frame was analyzed using LS-DYNA. The performance sensitivities of magnesium seat frame are analyzed using Taguchi method. In conclusion, the proper strength was had in the magnesium seat frame with comparison of steel frame and this frame could be reduced the weight about 40% of the steel seat frame.
윤영한(Younghan Youn),한완희(Wanhee Han),김병윤(Byungyoon Kim),유지훈(Jihoon Yoo) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Nowadays a rail safety rise a social issue. This research is analysis between train and worker, set a scenario for build collision analysis system by MADYMO. This research has the purpose of what design the rescue equipment for reduce injury when crash between train and worker.