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논문 기본 정보

자료유형
학술대회자료
저자정보
표정현 (고려대학교) 홍정화 (고려대학교) 김훈희 (고려대학교) 민성기 (고려대학교) 고은영 (지엠대우오토앤테크놀로지)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2010년 한국자동차공학회 학술대회 및 전시회
발행연도
2010.11
수록면
2,494 - 2,500 (7page)

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초록· 키워드

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There have been many studies of passive systems in an effort to decrease the worst fatal head injuries in pedestrians from car accidents. A passive system of structural improvements in vehicles has been a major focus in the motor industry in an attempt to reduce the number road deaths and injuries. The HIC (head injury criterion) is a quantity for head injuries that was obtained by integrating the acceleration that is measured by a head-form impactor for a fixed amount of time. In general, the hood should be designed with lower stiffness to decrease the HIC value. This study introduced a method for decreasing the hood stiffness by making a hole on the inner hood panel. To determine the most effective hole position on the inner hood panel, the concept of modal stiffness was considered. The FRF (frequency response function) results for vehicle model on head-form impact simulation were obtained. In addition, modal analysis of the entire vehicle model was carried out simultaneously.
Subsequently, using the results of these two analyses, adequate hole positions at each modal frequency were selected and the inner hood panel was improved by making a hole on these positions. Finally, through head-form impact simulations on the improved vehicle model with the hole, it was demonstrated that the new method applied in this study is acceptable and useful.
In conclusion, the improved vehicle model with a 40㎜ diameter hole on the inner hood panel showed a significant reduction in the HIC; approximately 12.2% compared to the original vehicle model. A significant reduction in the HIC can be achieved by making only a single hole on the inner hood panel. In addition, this new method is incredibly effective and simple, and can be applied immediately to currently produced vehicles as well as to various impact studies including head-form impacts.

목차

Abstract
1. 서론
2. METHOD
3. Hole을 형성한 차량 model의 충돌해석
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2013-556-001773046