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알루미늄 스페이스 프레임 적용 차량의 충돌안전도를 고려한 설계 및 해석
김범진(B.J.Kim),김정호(J.H.Kim),김병길(B.K.Kim),허승진(S.J.Heo),강혁(H.Kang),김종명(J.M.Kim) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
To achieve the weight reduction and the high-safety of the automotive body, we developed the aluminum space<br/> frame vehicle with respect to the light weight material. In this study, we performed the axial crush test and 3-point<br/> bending collapse test with aluminum extrusions which applied the structural foam to decide the application<br/> possibility with respect to the automotive crashworthiness. We also designed the collapse initiators to improve the<br/> crash energy absorbing capability and get the stable collapse modes for the front side member. As a result, we could<br/> suggest the direction of safety design for an aluminum space frame vehicle.
디스크 온도에 따른 열간 저더 발생 임계속도 예측 연구
김범진(B. Kim),이민규(M. Lee),김재민(J. Kim),조종두(C. Cho) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Hot spot phenomenon that occurs during judder vibration, is locally concentrated heat due to friction between brake disc and pad.. It is important to understand the reason behind hot spot phenomenon, for reduction of judder vibration. In this paper, it was studied a hot judder critical speed by a bulk temperature of an automotive brake disc. First, hot spot phenomenon was observed on chassis dynamometer equipment and it measured brake disc speed and temperature of disc surface when occurring hot spot. Then, a critical speed equation written by Dow & Burtton was editted for the temperature as the dependent variable using an brake disc"s material properties graph on temperature. It is a conbination of the result of dynamometer test and the critical speed equation, this paper obtained a hot judder nonlinear critical speed by a bulk temperature of disc brake.
[SAFETY 부문] 초경량 철강차체의 충돌에너지 흡수부재 설계 및 해석
김범진(B.J. Kim),허승진(S.J. Heo),윤병동(B.D. Yoon),남호(H. Nam),여동훈(D.H. Yeo) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Tailored blank(TB) and hydroforming manufacturing technologies are effectively applied to the ultra-light steel auto body(ULSAB). In this paper, the safety design concepts of the TB longitudinal members are formulated and the design parametric studies are performed using crash analysis based on the TB longitudinal member model and also the sub-structure model inclusive engine and transmission model. From the crash simulation results, the effect of the selected design parameters such as TB configuration concepts, number of TB parts, cross sectional shapes of longitudinal member, engine mounting locations and stiffness etc. on the crash energy absorbing characteristics are investigated and evaluated.