Hybrid soft soil tire model (HSSTM). Part III : Model parameterization and validation
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Date
Authors
Sandu, Corina
Taheri, Shahyar
Els, Pieter Schalk
Jimenez, Emilio
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Part I describes the tire structure model; part II the contact detection and contact interface models for rigid and deformable terrains; part III the model parameterization and validation. Model parameters are estimated using non-linear least-square optimization to minimize the error between the Hybrid Soft Soil Tire Model (HSSTM) predictions and experimental data. The parameterization routines’ initial conditions are estimated from modal analysis in radial and circumferential directions. The preliminary parameterized model is incorporated in the optimization routine to find tire sidewall and belt parameters in the radial direction using quasi-static cleat loading test data. The vertical force at the spindle and tire contact patch are used to study the model accuracy in the radial direction. FlatTrac tire longitudinal and lateral force test data are employed to estimate the parameters in these directions. The tire shear force and moment at the spindle are validated against experimental data for lateral dynamics performance.
Description
Keywords
Hybrid soft soil tire model (HSSTM), Tire model, Least-square optimization, Parameterization, Modal analysis
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Citation
Sandu, C., Taheri, S., Taheri, S. et al. 2020, 'Hybrid soft soil tire model (HSSTM). Part III : Model parameterization and validation', Journal of Terramechanics, vol. 88, pp. 1-15.