• 한국자동차공학회논문집
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• 제6권1호
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• pp.151-162
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• 1998

During a straight driving and cornering maneuver by a vehicle various forces and moments are exerted on the tire's footprint. A cornering properties, handling and stability performances of vehicle can be predicted by these forces and moments values. Therefore, on this study, a lateral force and a aligning torque are predicted by these forces and moments values. Therefore, on this study, a lateral force and a aligning torque are predicted using a finite element method. Contact area of the tire between bead and wheel are fixed to simplify of a finite element model. Lateral force is exerted on the rigid surface as a real load with Coulum friction after inflate and load vertically. Then, rotate the tire's axle to simulate a free rolling untill taken the equilibrium of a aligning torque. Also, experimental observations are made to test a reliability of a FE analysis conducted in this study. The finite element analysis said that good agreement was obtained with experimental results of these cornering properties, giving confidence within about one percent. So it os recommended that a finite element analysis can be used as a good tool to predicted the tire cornering properties.

• 한국자동차공학회논문집
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• 제24권3호
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• pp.310-318
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• 2016

The demands for vehicle safety systems such as ABS and ESC have been increased. Accurate vehicle state estimation is required to realized the abovementioned systems and tire-friction coefficient is crucial information. Estimation of lateral tire-road friction coefficient using pneumatic trail information is mainly dealt in this paper. Pneumatic trail shows unique characteristics according to the wheel side slip angle and these property is highly sensitive to vehicle lateral motion. The proposed algorithm minimizes the use of conventional tire models such as magic formula, brushed tire model and Dugoff tire model. The pure side slip maneuver, which means no longitudinal dynamics, is assumed to achieve the ultimate goal of this paper. A simulation verification using Carsim and Simulink is performed and the results show the feasibility of the proposed algorithms.

• 대한기계학회논문집A
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• 제41권7호
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• pp.585-590
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• 2017

주행중인 차량의 거동은 지면과 타이어의 접촉면에 발생하는 힘과 토크에 의해 결정된다. 타이어에 작용하는 힘과 토크를 계산하기 위하여 다양한 타이어 모델들이 사용되고 있으며, 본 연구에서 사용하는 브러쉬 모델(brush model)은 타이어의 물리적 특성을 이용하여 지면과의 접촉면에 발생하는 힘과 토크를 구하는 모델이다. 브러쉬 모델은 힘과 토크를 계산하는데 다른 타이어 모델에 비하여 적은 수의 계수를 필요로 하지만, 힘과 토크를 계산하는데 낮은 자유도를 가지기 때문에 시험 데이터를 정확하게 표현하는데 한계가 있다. 본 논문에서는 이러한 단점을 개선하기 위하여 타이어 마찰계수 및 특성계수에 최소한의 변수를 추가한 개선된 모델을 제안하고, 이의 유효성을 검증하였다.