Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: 01 Mar 2007

Load and Inflation Effects on Force and Moment of Passenger Tires Using Explicit Transient Dynamics2

Page Range: 41 – 55
DOI: 10.2346/1.2710447
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Abstract

Explicit transient dynamic FEA (ABAQUS) has been used to model a rolling passenger tire (195/75R14) subjected to a slip-angle sweep of 0 to −1 degree. The computation tracks the rolling and yawing history of the tire on a 3 m (10 in.) diameter drum. Various loads and inflation pressures are applied, and the computed forces and moments at a slip angle of −1 deg are compared to identify their sensitivities to these parameters. It is found that for the current small slip angle used, the lateral force is quite insensitive to inflation and vertical load. The moment, however, is highly dependent on both. The difference in sensitivities is caused by the strong dependence of moment on footprint size, which is controlled by both load and inflation. The presented numerical analysis is useful in understanding tire cornering characteristics.

Keywords: tire; explicit transient dynamics; rolling; yawing; handling; contact; slip angle; force; moment; torque; torsion; finite elements; ABAQUS
Copyright: The Tire Society
FIG. 1.
FIG. 1.

Contact patch of tire with negative slip angle.

FIG. 2.
FIG. 2.

SAE axes.

FIG. 3.
FIG. 3.

Expressions for force and moment.

FIG. 4.
FIG. 4.

Cross-section of mesh.

FIG. 5.
FIG. 5.

Rolling tire model.

FIG. 6.
FIG. 6.

Dynamical rotational equilibrium about vertical yaw Z-axis (SEA).

FIG. 7.
FIG. 7.

Critical time steps of rebar/membrane elements of carcass.

FIG. 8.
FIG. 8.

Critical time steps of rebar/membrane elements of belts.

FIG. 9.
FIG. 9.

Lateral force versus time.

FIG. 10.
FIG. 10.

SAT versus time.

FIG. 11.
FIG. 11.

Lateral force versus load.

FIG. 12.
FIG. 12.

Lateral force at different loads.

FIG. 13.
FIG. 13.

SAT versus inflation.

FIG. 14.
FIG. 14.

Lateral force versus inflation.

FIG. 15.
FIG. 15.

SAT versus inflation.

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