Development of a Modified Off-Road Rigid Ring Tire Model for Heavy Trucks

Paper #:
  • 2014-01-0878

Published:
  • 2014-04-01
DOI:
  • 10.4271/2014-01-0878
Citation:
Reid, A., Philipps, D., Oijer, F., Johansson, I. et al., "Development of a Modified Off-Road Rigid Ring Tire Model for Heavy Trucks," SAE Technical Paper 2014-01-0878, 2014, https://doi.org/10.4271/2014-01-0878.
Pages:
12
Abstract:
The rigid-ring tire model is a simplified tire model that describes a tire's behaviour under known conditions through various in-plane and out-of-plane parameters. The complex structure of the tire model is simplified into a spring-mass-damper system and can have its behaviour parameterized using principles of mechanical vibrations. By designing non-linear simulations of the tire model in specific situations, these parameters can be determined. They include, but are not limited to, the cornering stiffness, vertical damping constants, self-aligning torque stiffness and relaxation length. In addition, off-road parameters can be determined using similar methods to parameterize the tire model's behaviour in soft soils. By using Finite Element Analysis (FEA) modeling methods, validated soil models are introduced to the simulations to find additional soft soil parameters. By determining the full FEA tire model's characteristics, a simplified rigid-ring model can replace the complex model in full vehicle model simulations to reduce computation time and effort.
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