This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Handling Comparison of Vehicles with Steerable Auxiliary Axles
Abstract:
Self-steered or caster steered axles are commonly used to support load on multi-axle commercial vehicles. Such axles can allow more payload to be hauled in some vehicle configurations under the existing bridge formulas. These self-steered axles cannot generate a side load, and serve to unload surrounding fixed axles that do generate lateral forces to turn the vehicle with payload. Since the tire's ability to generate a side load is dependent upon its load, the use of caster-steered auxiliary axles can upset the balance (or the understeering) properties of the vehicle. This work will define the effect of adding a caster steered auxiliary axle and compare it with a steerable axle that positively controls the steer angle and thereby generates a lateral force. This work assumes the reader has a basic knowledge of the well publicized “bicycle” model, and particularly its extension to multi-axle vehicles.
Recommended Content
| Technical Paper | Modeling and Simulation of Lift Axle Control Valve |
| Technical Paper | Configuration of Heavy Trucks with Liftable Axles |
| Journal Article | Steer Laws for Steerable Trailer Axles to Reduce Tire Wear |