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리브 형상 변경에 의한 알루미늄 범퍼 백빔의 경량화 설계
강성종,Kang, Sungjong 한국자동차안전학회 2018 자동차안전학회지 Vol.10 No.2
Optimized section shape of aluminum bumper backbeam for enhancing the front high speed crashworthiness was investigated. Front body analysis model of a convertible vehicle was built up and parameter studies were carried out with changing the inner rib shape and the section thickness distribution. First an inner rib shape displaying most efficient structural performance was selected. Next, for the selected section the effect of section thickness combination was examined. Also, a light weighed backbeam section displaying crash performance over the current design was suggested. Finally RCAR front low speed impact analyses were carried out for the optimized models.
전방 차체의 정면 충돌성능 향상을 위한 범퍼 스테이 설계
강성종,Kang, Sungjong 한국자동차안전학회 2014 자동차안전학회지 Vol.6 No.2
Front side member of the front impacted vehicle plays a key role in minimizing the impacting load transferred to the compartment. To perform that required function, axial collapse should be dominant during side member crashing and, prior to designing side member, it is crucial to minimize bending moment occurred at the front end. In this study, for FE model of a SUV front body, front impact analyses were carried to find out bumper stay design which effectively develope axial collapse in the side member. As a previous work, the thickness of side member reinforcement were changed. Next, the inner thickness of bumper stay was increased. Also, the bead shape and location were modified. Final front body model showed much more axial collapsed mode and enhanced crash performance. In addition, a stay of octagon section was adopted and that model exhibited distinctive increase in impact energy absorption.
강성종 ( Sungjong Kang ),배진우 ( Jinwoo Bae ) 대구가톨릭대학교 자연과학연구소 2020 자연과학연구논문집 Vol.18 No.1
Demand on multi-function vehicles equipped with variable function seats is increasing. For a turntable seat a weight reduction study was carried out through finite element analyses. The analysis conditions were based on the seat belt anchorage regulation test FMVSS 207/210. First, for the initial design, modeling method was verified by comparing with the test results. Next, sub-modeling technique using only cushion frame without tuntable was investigated by applying the displacements from full model analysis to the turntable mounting locations. The design change parameter study was followed using sub-models to find out several effective thickness reduction methods with keeping the seat belt anchorage strength. Finally designed full model showed the equal strength and the weight reduction of 249g, compared with the initial design.