• 제목/요약/키워드: FMVSS

검색결과 70건 처리시간 0.029초

승객 상해치 감소를 위한 측면 에어백의 역할 (Role of Side Impact Airbag in Order to Reduce Passenger Injury Value)

  • 김동석;이명식
    • 한국자동차공학회논문집
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    • 제5권4호
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    • pp.142-151
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    • 1997
  • In order to reduce passenger injuries in side collisions, car makers are developing a side impact airbag system while Volvo has already adopted. This study examines dummy injury reduction effect of a side airbag system using full car side impact simulation according to FMVSS 214 test procedure. The simulation result without side airbag shows a good correlation with test data. The folded airbag simulation is carried out to check main design factors. Through the simulation with side airbag module integrated in the seat frame, it is found that the side airbag system provides a substantially enhanced protection for car occupants in side collisions.

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스티어링 컬럼의 충격 흡수 거동에 관한 연구 (The Study on the Impact Absorbing Behaviour of Steering Column)

  • 허신;구정서;최진민
    • 연구논문집
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    • 통권25호
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    • pp.23-29
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    • 1995
  • Steering column is a typical component that may injure the driver at a frontal collision accident. To protect the driver from an impact, it is very important to study the impact absorbing behaviour of steering column. The dynamic simulation were performed for the ball sleeve type impact absorbing steering column. The simulation results show similar trends to FMVSS 203 test results. Hence using the simulation program developed in this study, it is possible to predict dynamic response of steering system which is used in design modification. Impact absorbing performance of the ball sleeve type steering column with the column angle of $21^\circC$ and $26^\circC$ satisfies the safety criterion of FMVSS 203.

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자동차용 라운드 리클라이너 정적/동적 구조 강도 평가 (Evaluation of Static/Dynamic Structural Strength for Automotive Round Recliner)

  • 이동재;박창수;이경택;김상범;김헌영
    • 한국자동차공학회논문집
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    • 제13권1호
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    • pp.140-146
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    • 2005
  • This study presents the development of a round recliner using the finite element method. That reduces the number of test repeating times and gives an information about stiffness. A simulation model of round recliner mounting seat module and tooth strength simulation are established using a PAM-CRASH and ABAQUS. With the optimization of gear profile, structural strength design of round recliner was achieved. The round recliner seat module simulation, structure strength simulation and a crash safety are requested by FMVSS test. Solution of round recliner optimum variable study and design problem are searched for round recliner stress, deformation and application. Also an examination of safety is made.

승원 안전을 고려한 승용차 A-Pillar Trim의 최적 설계 (Optimum Design of A-Pillar Trim for Occupant Protection)

  • 김형곤;강신일
    • 한국자동차공학회논문집
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    • 제9권2호
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    • pp.99-106
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    • 2001
  • NHTSA has been conducting biomechanical studies to reduce inujuries sustained sustained during automotive collision. Furthermore, NHTSA added the regulation to the FMVSS 201, limiting the equivalent HIC(Head Injury Criterion) value under 1000. In the presont work, a methodology was developed for the optimum design of the A-pillar trim with rib-structures. The design variables for the rib-strucrures were the transverse spacing, the longitudinal spacing, and the thickness. The required sets of the design varibles were decided based on the design of experiments. The head impact simulations were carried out using the LS-DYNA3D, and the HIC(d) values were computed using the resulrs of the head impact simulation. The objective function was constructed using the response surface methed (RSM). When the obtained optimum values were not inside the region of interest, the design proceduers were repeated by changing the region of interest. Finally, an A-pillar trim with rib-structures, which resulred in HIC(d) value under 850 for 15 mph head-trim impact, was developed.

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Development of New-type Weight Classification System

  • Park, Byunghyuk;Hwang, Jaeho;Choi, Jaeyoung
    • 한국자동차공학회논문집
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    • 제24권4호
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    • pp.487-494
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    • 2016
  • In order to comply with the Federal Motor Vehicle Safety Standard(FMVSS) No. 208 that has been in force since September 2003, an automatic airbag suppression system has become an essential option for detecting and protecting infants and children seated in the front passenger seat of vehicles in the U.S. market. MOBIS has developed the world's first weight-based OCS under the name NWCS. NWCS is composed of two sensors and ECU. It is sub-packaged in order to minimize the seat structure deviation. In this paper, technical features, robustness and performance of NWCS are summarized and discussed.

자동차 시트용 라운드 리클라이너의 후방 충돌 성능 평가를 위한 수치해석 모델링 (Numerical Modeling to Evaluate Rear Crashworthiness for Round Recliner of Automotive Seats)

  • 김정민;이경택;김헌영
    • 한국자동차공학회논문집
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    • 제17권1호
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    • pp.64-71
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    • 2009
  • The development of more safe recliners is an important issue in the automotive industry. However, the development of new recliners is costly and take much time because it is typically based on experimental evaluation using prototypes. This study presents the evaluation of rear crashworthiness for round recliner using finite element method. That reduces the number of repeating test and gives an information about stiffness. To evaluate rear crashworthiness, the FMVSS 301 simulation and pendulum impact simulation were performed. The load path on two simulations was observed and compared each other in this paper. Also stress, strain and internal energy was compared. It is attempted the tooth strength simulation using a substructure option on PAM-CRASH.

어린이보호용좌석 효과의 실험적 연구 (Experiments of CRS for Safety Improvement)

  • 이재완;박형원;윤경한;박경진
    • 한국자동차공학회논문집
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    • 제11권4호
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    • pp.79-85
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    • 2003
  • The child restraint system is blown to be excellent to reduce child occupant injury in frontal collisions. The effects of the child restraint system are experimently investigated according to FMVSS 213. A sled simulator is utilized with varying restraint types such as 2point, 3point seat belts, forward-facing types and booster types of child restraint systems. The head and chest injuries for various cases are evaluated based on industrial standards. Also, the maximum displacements of the head and the knees are measured by film analysis. Using the results of the test, the effects of the child restraint system is discussed and reduction of child occupant injury is pursued.

운전자 충돌에 의한 에너지 흡수식 스티어링 시스템의 동적 해석 (Dynamic Analysis of Energy Absorbing Steering System for Driver Impacts)

  • 허신;구정서;최진민
    • 연구논문집
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    • 통권24호
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    • pp.97-106
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    • 1994
  • Steering system is typically one of the vehicle parts that may injure an unrestrained driver in a frontal collision. Therefore, the engineers of vehicle safety parts researched the allowable injury criteria such as HIC(head injury criterion). chest acceleration and knee impact force. From their research, they recognized that development of energy absorbing steering system was necessary to protect the driver. Energy absorbing parts of steering system consist of shear capsule, ball sleeve and shaft assembly. We performed the modelling and dynamic analysis of the energy absorbing steering column with the unrestrained driver model. The conclusions of this study are as follows. 1) The variation of column angle has an important effects on the dynamic responses of steering system and driver behavior. 2) The energy absorbing steering system satisfies the safety criterion of FMVSS 203, 208, but not the safety criterion of FMVSS 204.

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단품 압궤 시뮬레이션을 이용한 FMH 충격흡수부재의 설계방법에 관한 연구 (Designing FMH Impact-Absorbing Structure by Using Subcomponent Collapse Simulation)

  • 김지훈;전인기;최재민;김성훈
    • 대한기계학회논문집A
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    • 제34권8호
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    • pp.1113-1118
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    • 2010
  • 차량의 내장부품 설계에 있어 내장 부품의 탑승자 보호를 위한 FMVSS 201 법규에 따른 FMH 충격성능 만족을 위한 충격흡수구조 설계 방법이 필요하다. 충격흡수구조 설계 과정에 있어 FMH 충격 성능은 헤드라이닝의 타격 위치 및 헤드폼의 접근각에 따라 위치별로 각각 다르게 설정되며, FMH 충격 흡수부재는 위치에 따른 차체의 강성 및 상관부품을 고려하여 각 타격 위치에 따른 적절한 충격 흡수 성능을 가져야 하며 차체 강성의 변화를 고려한 효율적인 설계 방법이 필요하다. 본 연구에서는 충격 흡수구조 설계 과정에 있어 초기 설계안에 대한 충격 강도 검토의 시간을 줄이기 위해 전차량 시뮬레이션에서 수행하던 FMH 충격흡수부재 설계를 단위 모델의 압궤 시뮬레이션을 통해 진행함으로써 보다 빠르고 효율적으로 타격 위치별 적합한 충격 흡수구조를 설계하는 방법을 검토하였다.