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Grip - unipi.it
As the only contact point between the vehicle and the road, the tyre ensures two fundamental functions. It gives the vehicle its directional stability, which the driver needs to steer it. The tyre acts as a transmission component for brake and drive torque. Pneumatic tyres for automobiles began to be manufactured away back in 1895.
with Michelin tyres—broke the 100 km/h barrier. Manufacturers were fully aware that there was considerable room for progress. In 1920, large low-pressure tyres were developed. In 1930, the first patent on reducing tread pattern noise was issued. In 1946 came the invention of radial tyres with flexible side
The stiffness adjustable wheel mechanism based on compliant …
2024年1月8日 · This study proposes a variable-stiffness mechanism for non-pneumatic tires such that can actively adapt to various environments.
Facoltà di Ingegneria dell'Università di Pisa
Facoltà di Ingegneria dell'Università di Pisa
It has been observed that there are two main mechanisms of wet grip: rubber friction and hydroplaning. While rubber friction enables the generation of a braking or steering force by the tire through the rubber-road contact, hydroplaning reduces its …
first mechanism is the frequency excita-tion of the material by the road texture. The rubber is distorted when it slips over the rough spots on the road, thus lead-ing to a loss of energy, the so-called in-dentation mechanism. The second mech-anism is molecular adhesion, which Figure 2: TaMeTirE modelling approach: 1. Mechanical model based on ...
Michelin Tire Grip.pdf - Gr i p Grip Société de Technologie...
2021年11月10日 · • The first mechanism is the frequency excitation of the material by the road texture. The rubber is distorted when it slips over the rough spots on the road, the size of which varies from 1 centimetre (macrotexture range) to 1 micron (microtexture range). This mechanism is known as the road roughness effect.
WET GRIP OF WORN TIRE: MECHANISMS ANALYSIS, TEST METHOD RELEVANCE
2019年3月5日 · Experts know that on wet roads a worn tire has lower grip than a new one. Here, we propose an original approach (based on the calculation of the grip coefficient μ at each speed of the braking...
Tyre grip - Racecar Engineering
2020年1月2日 · Grip is defined as the coefficient of friction between the surface of the tyre and the surface of the racetrack. This friction depends on an array of factors including the roughness of the track as well as the type, temperature and therefore behaviour of the tyre rubber.
Tametire : predict tire performance | Michelin Simulation Services
It calculates the forces and moments acting on the tire under pure and combined slip conditions and according to the tire operating conditions: vertical load (or rolling radius), inflation pressure, slip angle, slip ratio, camber angle, speed and temperature.