Development and validation of an off-road rigid ring truck tyre model

Sayegh, Zeinab El; Gindy, Moustafa El; Johansson, Inge; Öijer, Fredrik

doi:10.1504/ijvsmt.2019.101552

Cited by 2 publications

(8 citation statements)

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“…Early studies such as those conducted by Bekker et al [31] and Reece [32] focused on equations for predicting terramechanics characteristics with empirically determined coefficients, such as the well-known pressure-sinkage and maximum shear stress equations (see 2.5 Soil Modelling and Calibration). Later, the focus shifted to theoretical models of the soil itself, such as the dynamic Bekker [33] and continuum models [34][35][36]. In the dynamic Bekker model, the soil was discretized as a set of nodes supported by nonlinear spring elements, which allowed the Bekker stress equations to be easily applied to the normal pressure at each soil node.…”

Section: Introductionmentioning

confidence: 99%

“…Variations of this method have been implemented in FEA environments as well [33]. The continuum model, on the other hand, treats the soil as a continuous body made up of solid elements with an elastic-plastic-based material formulation [34]. This model can work well for simulating the behaviour of harder soils [35] but does poorly for softer terrain since the compaction and shearing of soil particles are unaccounted for [35,36].…”

Section: Introductionmentioning

confidence: 99%

“…While SPH is not as accurate at the small scale as DEM, it is much more realistic than a continuum soil model and is currently pursued as a desirable intermediate complexity model [42]. It has also been used to model a wide variety of soil types, including sand, clay, wet sand, and snow [20,34,35,43]. Due to the high number of parameters needing calibration, both DEM and SPH soil models require the comparison of simulated tests like pressure-sinkage and shear with tests on the real soils to ensure the accuracy of the model [33,43].…”

Section: Introductionmentioning

confidence: 99%

“…The FEA software PAM-CRASH(Version. 2022) from ESI Group was used recently to study tire-terrain interactions [20,34,35,43]. The approach was based on a Goodyear Regional Haul Drive (RHD) truck tire model with multiple element types calibrated with simulated versions of vertical stiffness and drum-cleat tests.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modelling of Truck Tire–Rim Slip on Sandy Loam Using Advanced Computational Techniques

Collings,

El-Sayegh,

Ren

et al. 2024

Geotechnics

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Vehicles often experience low tire pressures and high torques in off-road operations, making tire–rim slip likely. Tire–rim slip is undesirable relative rotation between the tire and rim, which, in this study, is measured by the relative tire–rim slip rate. There is little research on the effect of different terrains on tire–rim slip despite its significance for off-road driving; therefore, this topic was explored through Finite Element Analysis (FEA) simulations. An upland sandy loam soil was modelled and calibrated using Smoothed-Particle Hydrodynamics (SPH), and then a Regional Haul Drive (RHD) truck tire was simulated driving over this terrain, with a drawbar load added to increase drive torque. To examine their effects, five parameters were changed: tire–rim friction coefficient, longitudinal wheel speed, drawbar load, vertical load, and inflation pressure. The simulations showed that increasing the tire–rim friction coefficient and the inflation pressure decreased the tire–rim slip while increasing the vertical and drawbar loads increased the tire–rim slip. Varying the longitudinal wheel speed had no significant effect. Tire–rim slip was more likely to occur on the soil because it happened at lower drawbar loads on the soil than on the hard surface. These research results increased knowledge of tire–rim slip mechanics and provided a foundation for exploring tire–rim slip on other terrains, such as clays or sands.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modelling of Truck Tire–Rim Slip on Sandy Loam Using Advanced Computational Techniques

Collings,

El-Sayegh,

Ren

et al. 2024

Geotechnics

View full text Add to dashboard Cite

show abstract

“…Slade established a simulation model of the tyre and the soil using the finite element method and analysed the driving characteristics of the tyre on sand. 16 Using the finite element software Abaqus, Xia 17 established a simulation model of the interactions between off-road tyres and the soil and analysed both the soil compression deformation and the tyre's tractive performance. Khot et al 18 used the discrete element method to establish a simulation model of sandy loam and studied both the deformation characteristics of the sandy soil and the tractive performance of the wheels in this soil.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the tractive performance of unmanned vehicles using an optimised wheel-step driving system

Wang

Zou

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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A wheel-step driving system that can realise a wheel-step driving mode is proposed to improve the tractive performances of wheeled unmanned vehicles when driving on soft roads. Although the wheel-step driving system proposed in this paper adopts double wishbone suspension, it also can be applied for different suspension configurations after adjustment. In this paper, a typical sandy soil and a designated tyre are selected as hypotheses to verify the enhanced effect of wheel-step driving system on tractive performance. First, the wheel-soil interaction mechanism of the wheel-step driving mode is analysed based on terramechanics theory and the wheel-step driving strategy is optimised. The tractive performances of the wheel-step driving mode and the normal driving mode are compared and analysed through numerical calculations. Then, a soil model is established using discrete element software and a wheel model is established using dynamics software; the coupled simulation of the dynamic and discrete elements compares the drawbar pull, the driving torque and the sinkage in the normal driving mode, the wheel-step driving mode and the optimised wheel-step driving mode. The simulation data verify the effectiveness of the optimisation strategy used and the enhancement effect of the wheel-step driving mode on the traction performance. Finally, a soil-bin test system is built and a tractive performance experiment is performed. The experimental data and the simulation data show good agreement, thus verifying the correctness of the simulation model.

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Development and validation of an off-road rigid ring truck tyre model

Cited by 2 publications

References 0 publications

Modelling of Truck Tire–Rim Slip on Sandy Loam Using Advanced Computational Techniques

Modelling of Truck Tire–Rim Slip on Sandy Loam Using Advanced Computational Techniques

Enhancing the tractive performance of unmanned vehicles using an optimised wheel-step driving system

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