Highlights HSSTM parameterization via standard measurements, modal analysis, and FEM is presented. Modal analysis includes set-up, quasi-static loading test, and estimating tire modal shapes. Theoretical in-plane vibration analysis and parameter estimation procedure are presented. Validation results are presented for the simulation results of HSSTM against tests performed in the Terramechanics test rig.
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.
Hybrid soft soil tire model (HSSTM). Part III: Model parameterization and validation
Journal of Terramechanics ; 88 ; 1-15
2019-11-04
15 pages
Article (Journal)
Electronic Resource
English
Hybrid Soft Soil Tire Model (HSSTM). Part II: Tire-terrain interaction
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