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우준성(Junseong Woo),배진욱(Jinwook Bae),임종현(Jonghyun Yim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Many countries have established their own regulations and classifications to protect pedestrians. Certification test of pedestrian protection is important to get a selling permission of vehicle. This result is composed of head injury (HIC_15), acceleration and bending angle of lower leg, femur force and bending moment of upper leg. In this paper, improved section shapes and materials for lower leg impact was researched by CAE. The stiffness of a bumper foam and a LBS(lower bumper) affects a tibia acceleration, and the angle between hood edge and bumper affects a bending angle. Lower leg injury can be reduced by proper composition of the stiffness and angle. Additionally, we suggested an improved design for TIC test as well as pedestrian protection.
정성필(Sungpil Jung),전갑진(Kabjin Jun),이수호(Suho Lee),우준성(Junseong Woo),박태원(Taewon Park),윤재호(Jaeho Yoon) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
It is very difficult to estimate the braking performance of a vehicle because brake system includes many parts such as a booster, a master cylinder, a valve and so forth. To calculate the braking characteristics such as braking force through the real vehicle test requires much time and cost. Therefore, the development of the way to estimate the braking performance of a vehicle with computational methods is needed. In this paper, a program which can analyze the whole braking capabilities of a vehicle is presented. Since all input and output data are composed of the Microsoft Excel format, it is easy to manage design data and found the data base. It is considered that the braking characteristics against the variation of booster vacuum pressure are changed when a vehicle is under braking. Furthermore, the additional postprocessor not only makes the graph presentation of the result data but also generates the Excel result files for the report.