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Tire load sensitivity describes the behaviour of tires under load. Conventional pneumatic tires do not behave as classical friction theory would suggest. The load sensitivity of most real tires in their typical operating range is such that the coefficient of friction decreases as the vertical load, Fz, increases.
Although it is acknowledged that the initial prototype automotive Tweel tires did demonstrate flaws with regard to noise and high-speed vibration [5] and produced 5 percent more friction compared to a radial tire, [3] these early issues were resolved in subsequent prototypes and, in 2013, automotive Tweel prototype products had been shown to be ...
Its hubless wheels are made from former truck tires, and a chain-driven friction drum provides power and brake force. [ 6 ] Designed "for casual cruising and slow ride-bys at shows", it consists of a 996 cc (60.8 cu in) fuel-injected Suzuki 4-stroke engine [ 7 ] in a steel frame covered by a fiberglass body with electroluminescent wire lighting.
Low rolling resistance tires are designed to reduce the energy loss as a tire rolls, decreasing the required rolling effort — and in the case of automotive applications, improving vehicle fuel efficiency as approximately 5–15% of the fuel consumed by a typical gas car may be used to overcome rolling resistance.
The coefficient of friction rapidly reaches a maximum value at about 10-20 percent slip, and then declines as the longitudinal slip values increase to 100 percent, which represents a fully locked tire. The maximum coefficient of friction in the 0-100 percent slip range is termed "peak" coefficient of friction, and the lower coefficient value ...
The Pacejka tire models are widely used in professional vehicle dynamics simulations, and racing car games, as they are reasonably accurate, easy to program, and solve quickly. A problem with Pacejka's model is that when implemented into computer code, it doesn't work for low speeds (from around the pit-entry speed), because a velocity term in ...
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