• 한국기계가공학회지
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• 제10권3호
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• pp.1-6
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• 2011

This study focused on the localization of swivel type tube couplers, which all depend on imports. In this study, a computer application analysis was performed using a finite element method as a preliminary study. In the major developments related to the objective of this study, the air brake system produced by car makers represents a different in the installation point of an air tank according to the type of cars or in the length and direction of its hoses and that leads to cause lots of problems. For solving such problems, the design of the major elements in a swivel type tube coupler was analyzed using a finite element method, and its validity was also verified. In the process that verifies the validity of this study, it was necessary to investigate how much external force affects the desorption of the tube support, which is the most important element in swivel type tube couplers. For achieving the investigation, a pressure test was implemented for the tube support according to the Federal Motor Vehicle Safety Standards(FMVSS). In the results of the pressure test, all samples satisfied the FMVSS. In addition, several tests were implemented by installing the sample of the developed swivel type tube coupler to an actual vehicle. In particular, rotation tests with various angles were applied by welding the swivel type coupler to an air tank through an argon welding process. In the results of the installing test for an actual vehicle, it was verified that the designed structure was determined as a structure that is able to endure the eccentric torque and deformation pressure applied to several directions that are the major problems in such fixed type tube couplers. Therefore, in the comparison of the performance of the developed product with the product of PARKER, it was possible to verify that the localized swivel type tube coupler developed in this study shows more excellent than that of the existing products by PARKER.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1999년도 춘계학술대회 논문집
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• pp.159-163
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• 1999

A seat frame structure in automotive vehicles made of polymer matrix composite to achieve weight reduction at low cost was developed. In order to design and manufacture the actual product, studies on material selection, and structural analyses were performed. Structural analyses were performed with a finite element analysis. Analyses were done for several cases suggested in various safety regulations of FMVSS(Federal Motor Vehicle Safety Standards). Each result was utilized to modify the actual shape to obtain a lighter, safer and more stable design. The final design was used to produce a sample bottom plate of the seat structure. Substitution of the material resulted in a weight reduction effect with equivalent strength, fatigue and impact characteristics. Furthermore, several effects from the replacement of the material besides weight reduction were also examined.

• 한국자동차공학회논문집
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• 제20권4호
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• pp.10-15
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• 2012

The design of automobile occupant seat belt system has been studied by using MADYMO. Based on the FMVSS 208 (Federal Motor Vehicle Safety Standards 208) and the USNCAP (United States New Car Assessment Program) regulations, seat belt design parameters were chosen for the design improvement to the 5th percentile female dummy: limit force of load limiter, time to fire of shoulder belt, inlet length of shoulder belt, inlet length of lap belt. The design of experiment method was employed to optimize the design parameters of passenger seat belt. Range of injury probability due to the change of H-point position was estimated by the simulation.

• 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.