Surface Heating by Friction and Abrasion by Thermal Decomposition

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Abstract
In this research, an attempt is made at determining the frictional temperatures which may occur in tires under various driving conditions. This is based on phenomenological theories of heat conduction. Since these temperature pulses are to be traced back to heat current pulses which may last in the neighborhood of 10−2 second, the resulting warming will be localized in boundary layers of the order of 10−2 cm. From the estimated values of the temperatures, it is concluded that the abrasion which occurs under normal driving conditions is purely mechanical. Only under extreme conditions, such as in very rapid acceleration, or in case of locked wheels—particularly at what we call “contact bridges” or surface elevations—may we expect high frictional temperatures, which lie far above the decomposition temperature of rubber.

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