Flexible multibody dynamics approach for tire dynamics simulation

Yamashita, Hideaki

doi:10.17077/etd.gfixb2od

Cited by 3 publications

(20 citation statements)

References 50 publications

(96 reference statements)

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“…This, however, requires extensive computational efforts to interface different codes in time domain and to assure numerical stability, especially under severe transient maneuvering scenarios that need to be considered in off-road mobility performance evaluation. To address these computational and modeling challenges, a new continuum-based tire-soil interaction simulation capability that can be fully integrated into general multibody dynamics computational algorithm has been recently proposed by Yamashita, et al using the flexible multibody dynamics techniques [14]. Using this approach, flexible tires, deformable soil and various rigid/flexible vehicle components can be modeled in a single multibody dynamics computational framework without resorting to co-simulation techniques.…”

Section: List Of Tablesmentioning

confidence: 99%

“…Using this approach, flexible tires, deformable soil and various rigid/flexible vehicle components can be modeled in a single multibody dynamics computational framework without resorting to co-simulation techniques. The nonlinear deformable tire model is developed using shear deformable laminated composite shell elements based on the finite element absolute nodal coordinate formulation, while deformable terrain is modeled using the finite element soil model using the capped Drucker-Prager failure criteria with the multiplicative finite plasticity theory [14]. These models were successfully validated against the test data [14].…”

Section: List Of Tablesmentioning

confidence: 99%

“…The nonlinear deformable tire model is developed using shear deformable laminated composite shell elements based on the finite element absolute nodal coordinate formulation, while deformable terrain is modeled using the finite element soil model using the capped Drucker-Prager failure criteria with the multiplicative finite plasticity theory [14]. These models were successfully validated against the test data [14]. However, use of high-performance computing as well as integration into high-fidelity full vehicle models have not yet been addressed rigorously.…”

Section: List Of Tablesmentioning

confidence: 99%

“…Since additional internal element parameters do not need to be introduced to alleviate lockings, complex plasticity failure models, like the Drucker-Prager yield criterion for deformable soil, can be implemented in a straightforward manner [14].…”

Section: Shear and Thickness Locking Remediesmentioning

confidence: 99%

“…As shown in Fig. 3.5, the global position gradient vector tensor F can be decomposed into elastic and plastic components [14]. This creates an intermediate stress-free state for which a classical return mapping scheme can be used to determine the plastic strain.…”

Section: Generalized Elastic Force Formulationmentioning

confidence: 99%

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Integration of deformable tire-soil interaction simulation capabilities in physics-based off-road mobility solver

Peterson¹

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The objective of this study is to integrate a continuum-based deformable tire and terrain interaction model into a general-purpose physics-based simulation environment capable of offroad vehicle mobility analysis and high-performance computing potential. Specifically, the physics-based deformable tire and terrain models which were recently proposed and validated by Yamashita, et al. will be implemented into the structure of the multi-physics simulation engine Chrono. In off-road vehicle mobility analysis, empirical and analytical models have been commonly used for vehicle-terrain interaction. While these models utilize experimental data or terramechanics theories to create quick predictive mobility models, they are unable to capture the highly nonlinear behavior of soft soil deformation, which can lead to inaccurate or unreliable results. In order to resolve these limitations, the use of physics-based numerical approaches have been proposed. These methods make use of finite element and discrete element simulations to describe the interaction between the vehicle and deformable terrain. Continuum-based finite element models transfer tire forces to the terrain and model the deformation with elasto-plastic constitutive equations. Discrete element soil uses a large number of small rigid body particles to describe the microscale behavior of granular terrain, with the deformation of the soil represented by the motion and contact of the particles. While these physics-based models offer a more accurate vehicle-terrain interaction model, the solution procedure can become complex and computationally expensive since co-simulation techniques are often used. To address these issues, the analysis of physics-based full vehicle dynamics simulations utilizing high-fidelity deformable tire and terrain models in a multi-physics engine with highperformance computing capability is desired. To this end, the deformable tire model formulated using the continuum mechanics based shear deformable laminated composite shell element proposed by Yamashita, et al. was integrated into the flexible body dynamics simulation framework of Chrono. This shell element is based on the absolute nodal coordinate formulation and is defined by the global position coordinates and the transverse gradient coordinates of its four nodes. Element lockings are eliminated with the incorporation of the enhanced assumed strain (EAS) and assumed natural strain approaches (ANS). The element formulation includes an extension to model laminated composite materials. Additionally, a locking-free 9-node brick element was integrated into the Chrono framework that makes use of the curvature coordinates at iv the center of the element. This element is formulated with the Hencky strain measure such that multiplicative finite strain plasticity theory can be used to incorporate soil plasticity models, such as the capped Drucker-Prager failure criterion. With the shear deformable laminated composite shell element and plastic soil brick element integrated into the Chrono multi-physi...

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Section: List Of Tablesmentioning

confidence: 99%

Section: List Of Tablesmentioning

confidence: 99%

Section: List Of Tablesmentioning

confidence: 99%

Section: Shear and Thickness Locking Remediesmentioning

confidence: 99%

Section: Generalized Elastic Force Formulationmentioning

confidence: 99%

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Integration of deformable tire-soil interaction simulation capabilities in physics-based off-road mobility solver

Peterson¹

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Physics-Based Deformable Tire–Soil Interaction Model for Off-Road Mobility Simulation and Experimental Validation

Yamashita

Jayakumar

Alsaleh

et al. 2017

Journal of Computational and Nonlinear Dynamics

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A physics-based deformable tire–soil interaction simulation capability that can be fully integrated into the monolithic multibody dynamics computer algorithm is developed by extending a deformable tire model based on the flexible multibody dynamics approach to off-road mobility simulations with a moving soil patch technique and it is validated against test data. A locking-free nine-node brick element is developed for modeling large plastic soil deformation using the multiplicative finite strain plasticity theory along with the capped Drucker–Prager failure criterion. To identify soil parameters including cohesion and friction angle, the triaxial compression test is carried out, and the soil model developed is validated against the test data. In addition to the component level validation for the tire and soil models, the tire–soil interaction simulation capability developed in this study is validated against the soil bin mobility test results. The tire forces and rolling resistance coefficients predicted by the simulation model agree well with the test results. It is shown that effect of the wheel loads and tire inflation pressures is well captured in the simulation model. Furthermore, it is demonstrated that the moving soil patch technique, with which soil behavior only in the vicinity of the rolling tire is solved to reduce the soil model dimensionality, leads to a significant reduction in computational time, thereby enabling use of the high-fidelity physics-based tire–soil interaction model in the large-scale off-road mobility simulation.

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Research status and prospect of plate elements in absolute nodal coordinate formulation

Zhang

Ren

Zhou

2022

Proceedings of the Institution of Mechanical Engineers, Part K:

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The Absolute Nodal Coordinate Formulation (ANCF) is a milestone in the study of flexible multibody dynamics and is of great significance for the study of the dynamics of multi-flexible systems, of which the plate element is an important part. In this article, the construction and principles of this type of element are systematically traced, the types of elements that have been studied are summarized, and the research history of the element locking problem and extended applications in different fields are briefly described. Through the systematic summary, the shortcomings in the current research and application of the element are identified, and some suggestions for future theoretical research on the plate element are given. The functional expansion of the plate element under the conditions of constraints, materials and physical fields as well as practical engineering applications are discussed.

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Flexible multibody dynamics approach for tire dynamics simulation

Cited by 3 publications

References 50 publications

Integration of deformable tire-soil interaction simulation capabilities in physics-based off-road mobility solver

Integration of deformable tire-soil interaction simulation capabilities in physics-based off-road mobility solver

Physics-Based Deformable Tire–Soil Interaction Model for Off-Road Mobility Simulation and Experimental Validation

Research status and prospect of plate elements in absolute nodal coordinate formulation

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