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차체 강성 및 충돌 성능을 위한 위상최적화 기법을 활용한 차량 load-path 개발
기승관(Seungguan Kee),김정호(Jungho Kim),배현우(Hyunwoo Bai),김용석(Yongsuk Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
This paper presents the development of efficient load-paths by using Topology Optimization for Body Stiffness and Crashworthiness. Within the context of crash loadcases, topology optimization should not be used to design crushable regions of the vehicle. For these loadcases it maybe useful to interrogate the section forces from an existing Crash analysis model to gain insight into the relative magnitudes and directions. The conversion model from transient loadcases such as crash to static loadcases and the body stiffness model are conducted by using topology optimization for the efficient load-paths. This study focused on not to develop structural performance but to improve the load bearing efficiency of the structure.
휠 허브 내장형 가속도계 신호를 이용한 차량 안정성 제어 시스템(ESP)의 제어 알고리즘에 관한 연구
김일환(Seungguan Kee),기승관(Ilhwan Kim),허승진(Seung-JIn Heo) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Electronic Stability Program(ESP) is a vehicle dynamics control system that supports a driver in critical driving situations. ESP controls dynamic vehicle motion in emergency situations, and allows a vehicle to follow a desired course by the driver. When ESP is active, the driver feels unfamiliar by its own braking. In this research, a lateral acceleration sensor on each wheel was added to conventional ESP with yaw rate sensors. This addition allows ESP to react quicker to the vehicle's Understeer/Oversteer. Thus, maintaining the vehicle's stability, even with lower brake pressure, becomes possible, as well as reducing the driver's unfamiliar feeling.