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로드휠의 슬립을 고려한 궤도차량의 평면운동에 관한 연구
윤재섭(Jaeseop Yoon),오덕수(Ducksoo Oh),임원식(WonSik Lim),강상욱(Sangwook Kang) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Steering mechanism of a tracked vehicle is quite different from that of a wheeled vehicle. A separate treatment of the steering of tracked vehicles is therefore required. A number of methods that can accomplish the steering of a tracked vehicle are skid-steering, articulated steering, and curved track steering. Among these, skid-steering is the most widely used method for steering tracked vehicles. Skid-steering is a complex phenomenon that involves the dynamics of a moving vehicle, track, and the properties of soil. In this study, A practical model that includes track slippage, inertia force and moment is presented to analyze and predict steering dynamics and steerability.
오덕수(Ducksoo Oh),윤재섭(Jaeseop Yoon),임원식(WonSik Lim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The three-dimensional internal flow analysis of a torque converter has been widely used to analyze and predict the performance and dynamic characteristics of a torque converter. Recently, many studies on internal flow analysis and flow visualization of a torque converter are being carried out. In this study, the steady state performance of a torque converter such as torque ratio, efficiency and capacity factor is estimated for three-dimension internal flow analysis. Also structure analysis is carried out making us of estimated internal pressure distribution. From the result, there is a possibility of knowing the variable for an optimum design of torque converter for heavy load vehicle.
축 방향 누설 자속이 고려된 2차원 FEA를 활용한 표면 부착형 영구자석 동기 전동기의 설계
정재우(Jaewoo Jung),박형일(Hyungil Park),윤재섭(Jaeseop Yoon),정하민(Hamin Jung),여훈(Hoon Yeo),홍정표(Jungpyo Hong) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
This paper deals with optimum design of surface mounted permanent magnet synchronous motor (SPMSM) for automotive component. For a compact system structure, it was designed as a motor with a 14-pole 12-slot concentrated winding and hollow shaft. The motor is a thin type structure which stator outer diameter is relatively large compared to its axial length and is designed to have a high magnetic saturation for increasing the torque density. Since the high magnetic saturation in the stator core increases the axial leakage flux, a 3-dimensional (3-D) finite element analysis (FEA) is indispensable for torque analysis. However, optimum designs using 3-D FEA is inefficient in terms of time and cost. Therefore, equivalent 2-D FEA which is able to consider axial leakage flux is applied to the optimization to overcome the disadvantages of 3-D FEA. The structure for cost reduction is proposed and optimum design using equivalent 2-D FEA has been performed.