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논문 기본 정보

자료유형
학술저널
저자정보
김철 (경북대학교) 이승윤 (경북대학교) 이영춘 (화신)
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제24권 제2호
발행연도
2016.3
수록면
137 - 143 (7page)

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초록· 키워드

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The fifth wheel coupler is a heavy automotive coupling structure which connects a tractor and a trailer used for heavy-duty trucks widely. It is subjected to various loads simultaneously such as rolling, pitching and yawing loads as well as coupling frictional and impact loadings. Most of existing couplers have been overdesigned and, therefore, it is necessary to reduce the dead weight to increase the fuel efficiency. The topology optimization was applied in order to find conceptual layout designs which could show major load paths and ribs locations, and then the size structural optimization was performed in order to determine the heights and thicknesses of coupler ribs with the predetermined various loading conditions for the development of a new slim coupler with a minimum weight and high enough strength and stiffness. As the results of the topology optimum design, an efficient new coupling structure for truck trailers was designed. The weight of the new fifth wheel coupler was reduced by 4.9 %, compared with the existing one, even though all strength requirements were satisfied. The fatigue test of the new coupler was performed with cyclic vertical loads (+78.4 to +235.2 kN) and horizontal loads (-91.2 to +91.2 kN) simultaneously at 1 Hz and the life of 2,000,000 cycles were achieved without failure.

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Abstract
1. 서론
2. 위상최적설계
3. 형상최적화 및 내구시험
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2016-556-002674644