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타이어에 따른 차량 승차감의 객관 평가와 주관 평가의 상관관계
국민구(Mingu Kuk),김봉수(Bongsu Kim),성기득(Kideug Sung),신영동(Youngdong Shin),정철호(Cheolho Jeong) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The vehicle ride comfort is one of the most important performances in the automotive industry. The vehicle ride comfort is rated as SAE subjective assessment by professional test driver. But, subjective assessment is lack of objectivity. So recently objective assessment has been used in researching in the areas of the vehicle ride comfort. In this study, a passenger car is driven at several tires, vehicle speeds, road profiles. And objective assessment method for the vehicle ride comfort test is constructed. First, the triaxial accelerometers are mounted on the knuckle, floor, seat, seat-back and are measured by twelve accelerations. And the measured accelerations express one ride comfort value according to Human Vibration of ISO 2631-1 and BS6841. Correlations are determined between objective ride comfort value and subjective rating.
타이어 설계 요인에 의한 타이어 특성과 차량 조종안정성에 관한 연구
김종찬(JongChan Kim),국민구(MinGu Kuk),송성우(SungWoo Song) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Tire design elements such as tread pattern design, mold cavities, compound materials, constructions, etc., affect vehicle handling performance. The study of these design elements has been a field of constant interest in the automotive industry. However it not only takes a lot of time and cost but also has difficulties that requires a lot of experience to ensure the reliability of the results. In this paper, the handling performance variation according to the tire design factors was experimentally investigated. First, the force and moment characteristics of the tire according to tire design element were analyzed. For this work, the test conducted with 4 different structural stiffness types of tires and measured the characteristics of force and moment using the tire test machine(Flat Trac CT Plus). Next, the characteristics of the vehicle behavior were analyzed depending on the characteristics of the force and moment. For th is wo rk, vehic le te sts su ch as On-Cen ter Handlin g, Slow ly Ram p Ste er, et c., we re perform ed usi ng t he steering robot(SR -30). Fin ally, from the test re sul ts of this pa per , the correla tion was confir med betw een the tire design elements, the characteristics of tire force and moment and characteristics of vehicle behavior.
김종찬(JongChan Kim),국민구(MinGu Kuk),송성우(SungWoo Song) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
Tire design variables, such as tread patterns, mold cavities, compounds, and structures, affect the response performance of the vehicle. In this study, the following experimental methods are used to find tire characteristics that affect the response performance of a vehicle. First, the structural variables were adjusted to make samples of different response levels, and then various indoor tests were performed using FLAT-TRAC to derive the tire characteristics associated with the vehicle’s response from the prepared samples. In order to evaluate the response performance of the vehicle for each tire samples, a objective outdoor test was then performed on the proving ground using various measurement equipments as like RT-3000, steering robot, etc. Finally, the relationship between the response performance of the vehicle and the characteristics of the tire was compared from these results.