摘要
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 fire 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.
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.
基金
China Postdoctoral Science Foundations(Nos.2014M551509,2015M571681)
