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RISS 인기검색어
- 검색키워드
- 저자 : 홍창섭(Chang-Sup Hong) (검색결과 2 건)
- 무료
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[안전] 트럭의 충돌 특성해석을 위한 유한요소 모델의 개발
홍창섭(Chang-Sup Hong),오재윤(Chae-Youn Oh),김학덕(Hak-Duck Kim),이대창(Dae-Chang Lee),송주현(Ju-Hyun Song) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_2
This paper develops a finite element model for the crashworthiness analysis of a truck. A simulation for a truck frontal crash to a rigid barrier using the model is performed with PAM-CRASH installed in IBM super computer RS/6000. Full vehicle model is composed of 86467 shell elements, 165 beam elements and 98 bar elements, and 86769 nodes. The model uses four material model such as elastic, elastic-plastic(steel), rigid and elastic-plastic(rubber) material model which are in PAM-CRASH. Frame and suspension system are modeled with 28774 shell elements and 31412 nodes. Cab is modeled with 34680 shell elements and 57 beam elements, and 36254 nodes. Bumper is modeled with 2262 shell elements, and 2508 nodes. Axle, steering shaft, etc are modeled using beam or bar elements. Mounting parts are modeled using rigid bodies. Bodies are interconnected using nodal constrains or joint options. To verify the developed model, frontal crash test with 30mph velocity to a rigid barrier is carried out. In the crash test, vehicle pulse at lower part of b-pillar is measured, and deformed shapes of frame and driver seat area are photographed. Those measured vehicle pulse and photographed pictures are compared those from the simulation to verify the developed finite element model.
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[안전] 트럭의 승객거동해석을 위한 유한요소 모델의 개발
홍창섭(Chang-Sup Hong),오재윤(Chae-Youn Oh),김학덕(Hak-Duck Kim),이대창(Dae-Chang Lee),송주현(Ju-Hyun Song) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1999 No.11_2
This paper develops a finite element model for studying occupant behavior of a truck equipped with a driver side airbag. The developed model simulates an occupant behavior using PAM-SAFE in IBM super computer RS/6000. The model is developed based on a sled test. A 50% hybrid dummy I II is used for measuring head and chest accelerations and femur loads. and major injury coefficients such as HIC, CA and femur load. Interior parts of the truck compartment are modeled using rigid bodies and contact type II of PAM-CRASH. In the definition of contact type II, force-deflection relationships of each body is utilized. Airbag cushion is modeled using shell elements. Airbag cover groove is modeled using rivet elements. Airbag tether is modeled as nonlinear bar elements. Airbag model has two vent holes to ventilating the exploded gas. Airbag is folded close to the real airbag folding procedure, and folded cautiously in order not to have initial penetration. A vehicle pulse acquired from 31 mph frontal barrier test is used as input signal for the simulation. The simulation conditions are tuned to the sled test ones. The measured dummy accelerations and major injury coefficients and filmed dummy behavior and airbag inflation process using high speed camera are compared to the simulation results to verity the developed finite element model.
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