The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering

Abstract The phenomenon of snaking of vehicles can be caused by many factors. It results from the loss of the vehicle’s straight-line direction of motion, which is intended by the driver. In this situation, for single-mass vehicles (like automobiles), special systems (braking) are activated, aiming...

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Main Author: Aleksander Skurjat
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Scientific Reports
Subjects:
Online Access:https://doi.org/10.1038/s41598-024-81859-0
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author Aleksander Skurjat
author_facet Aleksander Skurjat
author_sort Aleksander Skurjat
collection DOAJ
description Abstract The phenomenon of snaking of vehicles can be caused by many factors. It results from the loss of the vehicle’s straight-line direction of motion, which is intended by the driver. In this situation, for single-mass vehicles (like automobiles), special systems (braking) are activated, aiming to return the vehicle to the direction intended by the driver. Additionally, in automobiles wheel caster angle is applied to facilitate maintaining the straight-line direction. However, for articulated vehicles where two masses are connected by articulated joint, such solutions cannot be applied directly because they are complicated. The paper undertakes an analysis of whether an inclined steering axis in vehicles with articulated steering systems will allow to obtain the additional torque to automatically return to rectilinear motion.For this purpose, a mathematical model was developed, and the influence of: the tilt of the articulation joint axis, changes in the position of the centre of gravity of the front and rear frames, tyre stiffness and damping, and steering system stiffness and damping in the vehicle’s trajectory were analysed. The mathematical model consists of six submodels: kinematic model, dynamic model, tyre model, steering system model, front rear yaw angle division model, and solution evaluation method. The research showed that applying a tilt of the articulation joint axis can either positively or negatively affect the resulting direction of motion, and it depends on the adopted vehicle parameters.
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spelling doaj-art-e4a3d83a1be745b0b02b7f4a3e0cdc822025-01-05T12:23:01ZengNature PortfolioScientific Reports2045-23222025-01-0115111210.1038/s41598-024-81859-0The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steeringAleksander Skurjat0Faculty of Mechanical Engineering, Wroclaw University of Science and TechnologyAbstract The phenomenon of snaking of vehicles can be caused by many factors. It results from the loss of the vehicle’s straight-line direction of motion, which is intended by the driver. In this situation, for single-mass vehicles (like automobiles), special systems (braking) are activated, aiming to return the vehicle to the direction intended by the driver. Additionally, in automobiles wheel caster angle is applied to facilitate maintaining the straight-line direction. However, for articulated vehicles where two masses are connected by articulated joint, such solutions cannot be applied directly because they are complicated. The paper undertakes an analysis of whether an inclined steering axis in vehicles with articulated steering systems will allow to obtain the additional torque to automatically return to rectilinear motion.For this purpose, a mathematical model was developed, and the influence of: the tilt of the articulation joint axis, changes in the position of the centre of gravity of the front and rear frames, tyre stiffness and damping, and steering system stiffness and damping in the vehicle’s trajectory were analysed. The mathematical model consists of six submodels: kinematic model, dynamic model, tyre model, steering system model, front rear yaw angle division model, and solution evaluation method. The research showed that applying a tilt of the articulation joint axis can either positively or negatively affect the resulting direction of motion, and it depends on the adopted vehicle parameters.https://doi.org/10.1038/s41598-024-81859-0Articulation joint axis tiltInclinationCamber angleSnakingDirectional stabilitySteering system
spellingShingle Aleksander Skurjat
The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering
Scientific Reports
Articulation joint axis tilt
Inclination
Camber angle
Snaking
Directional stability
Steering system
title The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering
title_full The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering
title_fullStr The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering
title_full_unstemmed The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering
title_short The effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering
title_sort effect of steering axis inclination on the dynamic stability of vehicles with an articulated steering
topic Articulation joint axis tilt
Inclination
Camber angle
Snaking
Directional stability
Steering system
url https://doi.org/10.1038/s41598-024-81859-0
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AT aleksanderskurjat effectofsteeringaxisinclinationonthedynamicstabilityofvehicleswithanarticulatedsteering