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THE INFLUENCE OF BELT DYNAMICS ON CORNERING AND BRAKING PROPERTIES OF TYRES

J.‐P. St.‐Maurice, P.W.A. Zegelaar, Hans B. Pacejka

Open publisher page 13 citations

Abstract

The dynamic tyre behaviour is studied by means of experiments and a dynamic tyre model. To represent the tyre dynamics up to approximately 60 Hz a rigid ring model is used. The tyre-road interface is modelled using a steady state tyre model in conjunction with the relaxation length concept to describe the longitudinal and lateral force and the aligning moment generation properties of the tyre. Residual compliances are introduced to account for the large carcass deformations near the tyre contact patch. The measured frequency response functions of forces and moments with respect to the applied steering angle or brake torque are used to estimate the tyre parameters. From the experiments the total tyre relaxation length is determined as function of the level of slip and the normal load. The influence of the velocity on the natural frequencies of the belt is shown as well.

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What this paper is about

The dynamic tyre behaviour is studied by means of experiments and a dynamic tyre model. To represent the tyre dynamics up to approximately 60 Hz a rigid ring model is used. The tyre-road interface is modelled using a steady state tyre model in conjunction with the relaxation length concept to describe the longitudinal and lateral force and the aligning moment generation properties of the tyre. Residual compliances are introduced to account for the large carcass deformations near the tyre contact patch. The measured frequency response functions of forces and moments with respect to the applied steering angle or brake torque are used to estimate the tyre parameters. From the experiments the total tyre relaxation length is determined as function of the level of slip and the normal load. The influence of the velocity on the natural frequencies of the belt is shown as well.

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Available abstract

The dynamic tyre behaviour is studied by means of experiments and a dynamic tyre model. To represent the tyre dynamics up to approximately 60 Hz a rigid ring model is used. The tyre-road interface is modelled using a steady state tyre model in conjunction with the relaxation length concept to describe the longitudinal and lateral force and the aligning moment generation properties of the tyre. Residual compliances are introduced to account for the large carcass deformations near the tyre contact patch. The measured frequency response functions of forces and moments with respect to the applied steering angle or brake torque are used to estimate the tyre parameters. From the experiments the total tyre relaxation length is determined as function of the level of slip and the normal load. The influence of the velocity on the natural frequencies of the belt is shown as well.

Key concepts: Slip angle, Brake, Contact patch, Residual, Torque, Vehicle dynamics, Slip (aerodynamics), Engineering

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THE INFLUENCE OF BELT DYNAMICS ON CORNERING AND BRAKING PROPERTIES OF TYRES — Research Paper | ScholarLens