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Tire grip performance Simulation and Improving Method Considering the Influence of Tread Pattern Stiffness

Journal of Donghua University(English Edition) 2016年第6期33卷 939-943页

作者：王国林付晶周海超杨健梁晨 School of Automotive and Traffic Engineering Jiangsu University

The grip performance of radial tires on dry roads was simulated with the software ABAQUS.A sliding-velocity-dependent friction coefficient on the contact behavior at the tire-pavement interface was selected to describe friction phenomenon for tire and road interface.Anti-lock brake system(ABS) process was achieved by controlling the tire angular velocity to obtain the relationship between friction force and slip rate,while the maximum friction forces were used to evaluate tire grip performance.Physical mechanism of tire grip performance was also analyzed through the frictional force generated from the adhesion region and sliding region by considering the contact differences between the longitudinal slip and the lateral slip,and the deformation characteristics of tire pattern were also investigated.In order to improve tire grip performance,carbon fiber material was added to the tread pattern grooves.The results show that carbon fiber has a significant influence on stiffness distribution of tread patterns and friction force vector in the contact zone.Tire grip performance can be improved by controlling the stiffness distribution and deformation direction of the tread pattern.

关键词： tire tire pattern carbon fiber grip performance friction model

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A Discrete Tire Model for Cornering Properties Considering Rubber Friction

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Automotive Innovation 2020年第2期3卷 133-146页

作者： Nan Xu Yiyang Yang KonghuiGuo State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025Jilin ProvinceChina Pan Asia Technical Automotive Center Co. LtdPudong 201208ShanghaiChina

In this paper,a discrete tire model of comering properties for road vehicles relating to tire grip performance,which is important for driving stability and safety,is presented.The proposed tire model combines realistic rubber friction related to velocity and tire grip performance with deformation of the carcass.The model can describe the stress and strain of the carcass and tread,and the rubber friction coefficient at each point of the contact patch,which is affected by the di stribution of the slip velocity.Meanwhile,the model incorporates the effects of the viscoelastic rubber material and power spectrum of the road,which are explicitly reflected in the rubber friction model.First,an improved rubber friction model based on the Persson theory of rubber friction is introduced in this paper.A discrete analytical tire model,which considers carcass compliance and the discretization of the tread,is then proposed.In addition,important phenomena of tire properties arising from the carcass compl iance and rubber friction are analyzed and the effectiveness of the discrete analytical tire model is validated experimentally.The proposed model provides a new way to optimize the grip performance of a tire by adjusting the tire or rubber physical parameters even before the tire is made.

关键词： Road vehicle Tire model grip performance Rubber friction Running velocity

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