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등이축 인장시험과 물성 보정을 이용한 캘리퍼 브레이크 피스톤 씰의 해석 신뢰도 향상을 위한 연구
김희용(Heeyong Kim),김문성(Munsung Kim),우창수(Changsu Woo) 한국자동차공학회 2015 한국자동차공학회 부문종합 학술대회 Vol.2015 No.5
The stiffness of piston seal is one of the main factor influencing the performance for caliper brake such as brake drag and brake oil consumption. With uniaxial compression test of rubber, it is difficult to obtain compression property due to friction force and the results of material test and CAE for rubber may have an small error themselves. In this study, equi-biaxial tension test and material calibration were carried out. In order to measure properties at pure state, compression properties were obtained by equi-baxial tension test and To improve reliability, calibrated material property was determined by optimization between CAE compression results and test compression results of piston seal. By using the calibrated material property, the comparison of experimental and analytical results for the performance of caliper brake shows good agreement.
멀티 에이전트를 이용한 도시고속도로 교통축에 대한 통합제어.Ⅰ: 문제 정의
조기용(Kiyong Cho),김문성(Munsung Kim),배철호(Chulho Bae),서명원(Myungwon Suh) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_1
Freeway Corridors consist of urban freeways and parallel arterials that drivers can use alternatively. Ramp metering in freeways and signal control in arterials are contemporary traffic control methods that have been developed and applied in order to improve traffic conditions of freeway corridors. However, most of the existing studies have focused on either optimal ramp metering in freeways, or progression signal strategies between arterial intersections. There have been no traffic control systems in Korea that integrates the freeway ramp metering and arterial signal control. The effective control strategies for freeway operations may cause negative effects on arterial traffic. On the other hand, traffic congestion and bottleneck phenomenon of arterials due to the increasing peak-hour travel demand and ineffective signal operation may generate an accessibility problem to freeway ramps. Thus, the main function of the freeway which is the through-traffic process has not been successful. The purpose of this study is to develop an integrated control model that connects freeway ramp metering systems and signal control systems in arterial intersections. And Optimization of integrated control model which consists of ramp metering and signal control is another purpose. The design of experiment, neural network, and simulated annealing are used for optimization.
멀티 에이전트를 이용한 도시고속도로 교통축에 대한 통합제어.Ⅱ: 최적화
조기용(Kiyong Cho),김문성(Munsung Kim),권성진(Sungjin Kwon),서명원(Myungwon Suh) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_1
Freeway Corridors consist of urban freeways and parallel arterials that drivers can use alternatively. Ramp metering in freeways and signal control in arterials are contemporary traffic control methods that have been developed and applied in order to improve traffic conditions of freeway corridors. However, most of the existing studies have focused on either optimal ramp metering in freeways, or progression signal strategies between arterial intersections. There have been no traffic control systems in Korea that integrates the freeway ramp metering and arterial signal control. The effective control strategies for freeway operations may cause negative effects on arterial traffic. On the other hand, traffic congestion and bottleneck phenomenon of arterials due to the increasing peak-hour travel demand and ineffective signal operation may generate an accessibility problem to freeway ramps. Thus, the main function of the freeway which is the through-traffic process has not been successful. The purpose of this study is to develop an integrated control model that connects freeway ramp metering systems and signal control systems in arterial intersections. And Optimization of integrated control model which consists of ramp metering and signal control is another purpose. Optimization results are verified by comparison with the results from MATDYMO.
박건일(Gunil Park),이진호(Jinho Lee),김문성(Munsung Kim),방창선(Changseon Bang),최재웅(Jaewoong Choi),최경순(Kyongsoon Choi) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
고유가 시대에 정보시스템의 발달과 더불어 안전하고 경제적인 항해계획의 수립을 지원하는 시스템에 대한 요구가 증대되고 있다. 이에 저자들이 개발한 최적항로평가시스템에 대하여 그 개발 내용 및 적용 사례를 소개한다. 기상예보데이터를 이용하여 소요시간 및 연료소모량 관점에서 최적화된 항해 계획을 생성하며, Parametric roll을 포함한 각종 내항성능 지표를 정량적으로 평가하여, 항해자로 하여금 항해의 안전성 및 경제성 관점에서 최적화된 항해 계획을 수립하도록 지원하는 시스템을 개발하였다. 개발된 시스템의 유효성은 실 항해중 적용한 사례 및 시뮬레이션 결과를 통해서 검증하였다. For the safety and efficiency of voyage, the demand for decision support system in route planning has been increasing with the advance of information technology and the increase of oil price. According to the needs, the authors developed an optimum route assessment system. The system assists an navigator to make an optimum route plan with respect to sailing time and fuel consumption using weather forecast data. Also, the system provides the quantitative estimation for the various safety indexes including parametric roll and etc. Using these functions, a navigator is able to design the safe and efficient voyage plan. The effectiveness of system were verified by the operation during actual voyages and the simulation studies.
이수홍(Soohong Lee),박준철(Juncheol Park),김문성(Munsung Kim),김민철(Mincheol Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
To meet the emission regulation & increase the power, new development including engine variant is conducted in passenger car diesel engine. The application of 3D multi-body dynamics, based on flexible bodies, is a well-established method for calculating the dynamic behavior and local loads in the current engine development process. However, comprehensive input data are required for such a calculation method and computing times are very high. These disadvantage limit the application in an early development phase and the investigation of many variants. Nowadays, analytical calculation methods are state of the art in the concept phase of the engine development instead of numerical methods. This research describes the optimum design of crank train system by using EXCITE Designer with iSIGHT in early design stage of HSDI passenger car diesel engine.
Development of Stiffness Analysis Program for Automotive Wheel Bearing
Inha Lee(이인하),Younggeol Cho(조영걸),Jungho An(안정호),Youngmin Cho(조영민),Munsung Kim(김문성),Cheonsoo Jang(장천수),Younghwan Lee(이영환),Seungpyo Lee(이승표) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Automotive wheel bearing is an essential component of the vehicle and transmits engine power into wheels and supports vehicle weight. As comfortable ride has recently been the common interest, the stiffness of bearing which affects the steering performance becomes significant. In this study, the program BSAP was developed to carry out the stiffness analysis by designer easily and quickly. BSAP has three templates; CATIA template, AFC template, and Report template. In CATIA template, 3D analysis model was generated from the CAD model by eliminating useless fillets and holes and assigning heat treatment parts. Material property, boundary conditions and loadings were applied and analysis was performed in AFC template. Finally, analysis results were reported automatically in Report template. Bearing stiffness analysis was performed by using the BSAP. To verify the reliability of BSAP, the analysis results were compared with experiment results. They showed good agreement with the experiment results.