Influence of Pattern Void on Hydroplaning and Related Target Conflicts

Abstract

The Tire Society was established to disseminate knowledge and to stimulate development in the science and technology of tires. These ends are pursued through seminars, technical meetings and publication of the journal, Tire Science and Technology. The Society is a not-for-profit Ohio corporation that is managed by a duly elected Executive Board of Tire Industry professionals who serve on a volunteer basis.

Phenomenological analysis of hydroplaning through intelligent tyres

“…The time constant is simply expressed as the ratio between the pseudo-relaxation length λ and the test speed V . The identification of the pseudo-relaxation length was done by minimising the difference between the lateral force predicted through model (5) and the values of the lateral force recorded during the tests.…”

“…As a consequence, the contact area between the tyre and the road reduces until the so-called hydroplaning speed is reached, where only the shoulders of the tyre remain in contact with the road (Figure 1). Hydroplaning speed depends on several factors such as normal load acting on the tyre, thickness of the water layer, road texture and tread design [5]. In particular, the capability of the tyre to expel water from the contact patch is a key factor.…”

“…Hydroplaning [1][2][3][4][5] is generated by a wedge of water that remains trapped between the tyre and the road. Due to an undesired mechanism of hydrodynamic lubrication, with increasing speed, the water is pushed under the leading edge of the tyre, causing it to lift from the road.…”

Dynamic measurement of the fluid pressure in the tire contact area on wet roads

“…In addition, number and design of edges have a direct impact on the wet braking performance. On the other hand, pattern design and profile depth determine how fast water on the road is squeezed out under single tread blocks and transported outside the contact patch to allow the transmission of braking forces [10]. Driving speed and water height have a direct impact on the squeeze out process.…”

Speed analysis of the radial tire on hydroplaning pavement

“…The interaction between the tire tread blocks and the snow deformation is implemented by the explicit Euler-Lagrangian coupling scheme. Wies B. et al [7] studied total void, longitudinal, and lateral void distributions of basic winter, summer tread patterns and tread compounds based on the DOE. Cho et al [8] estimated a wet-road braking distance for the vehicles equipped with ABS.…”