Method for calculating a friction-slippage curve for a tire

US7673495B2 · kind B2 · utility

Assignee

• PIRELLI TYRE S.P.A. · IT

Inventors

• Oliver Albohr · Tönning, DE
• Luciano Garro · Milano, IT
• Udo Kuhlmann · Dresden, DE
• Vittorio Peveri · Milano, IT
• Bo N. J. Persson · Lich, DE
• Alessandro Pinto · Kensington, US

Key dates

• Filing date: Aug 30, 2005
• Grant date: Mar 9, 2010
• Expiry date: Aug 31, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2210/12
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for calculating a μ-slippage curve for a tire based on laboratory data derived from characteristic values of a used compound, of the road surface and a vehicle without producing a complete tire, and a method for calculating a μ-slippage curve for a tire include the steps: calculating a friction force between rubber compound and a rough surface based on a friction coefficient for different slippage values and lateral positions of the tire wherein the friction coefficient is calculated depending on a sliding velocity between the rough surface and a tread block and on a temperature of the tire. After calculating the friction force, the motion of a tread block depending on pressure distribution during the movement of the tread block through the contact area and on characteristics of a tire body is calculated. The resulting μ-slippage curve is composed from effective μ-slippage values for different slippage values wherein effective μ-slippage values are calculated based on the friction force and a nominal force derived from the pressure distribution.