轮胎结构力学-轮胎复合材料理论之进展.pdf

J. D. Walter, 1 G. N. Avgeropoulos,~ M. L. Janssen, I and G. R. Ports ~ Advances in Tire Composite Theory REFERENCE: Walter, J. D., Avgeropoulos, G. N., Janssen, M. L., and Ports, G. R., Advances in Tire Composite Theory, Tire Science and Technology, TSTCA, Vol. 1, No. 2, May 1973,pp. 210-250. A B S T R A C T : Fundamentals of composite material technology are applied to the investigation of multi-ply cord-reinforced rubber systems as used in pneumatic tires. The stiffness parameters of such multi-ply systems are determined through the use of the elastic properties of the constituent cord and rubber components. The effects of coupling between the bending and stretching modes of deformation are discussed along with the limitations of present composite material technology as applied to soft rubbery systems. The predicted stiffness parameters are related to tread wear, obstacle envelopment, vibration, and stress analysis of tires. K E Y W O R D S : cord-rubber composites, elastic theory, tire mechanics, treadwear, obstacle envelopment, tire vibrations, tire stress, holography The material properties of the constituent components of the pneumatic tire--cord and rubber--have been studied in detail by investigators in the industry since the early days of tire production. Thus, the effect of twist on the stress-strain properties of cotton tire cord and the reinforcing effect of carbon black on the modulus of natural rubber were well known phe- nomena many decades ago. On the other hand, the material properties (specifically, the elastic constants) of the cord-rubber composite system that constitutes the tire are not as well known and ha