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Author : Hao Li
Publisher :
ISBN 13 : 9783943995428
Total Pages : 0 pages
Book Rating : 4.9/5 (954 download)
Download or read book Analysis of Off-road Tire-soil Interaction Through Analytical and Finite Element Methods written by Hao Li and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Adnan Degirmencioglu
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.3/5 (129 download)
Download or read book A Study of Soil-tire Interactions Using Finite Element Method written by Adnan Degirmencioglu and published by . This book was released on 1997 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bryan Peterson
Publisher :
ISBN 13 :
Total Pages : 85 pages
Book Rating : 4.:/5 (995 download)
Download or read book Integration of Deformable Tire-soil Interaction Simulation Capabilities in Physics-based Off-road Mobility Solver written by Bryan Peterson and published by . This book was released on 2016 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study is to integrate a continuum-based deformable tire and terrain interaction model into a general-use physics-based simulation environment capable of off-road 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 models. 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 high-performance computing capability is desired.
Author : Zeinab El-Sayegh
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Modeling and Analysis of Truck Tire-terrain Interaction written by Zeinab El-Sayegh and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the key factors for improving the mobility and operating efficiency of trucks is the understanding of the tire-terrain interaction characteristics. Due to the broad range of terrains that trucks may operate over, the understanding process of the tire-terrain interaction is necessary. The terrains for on-road operations are commonly dry or wet surfaces. For off-road operations, a more extensive range of deformable terrains exists, such as dense sand, clayey soil, and gravel. In some cases, vehicles may operate over terrains covered with snow or layers of mixed snow and ice. This research work focuses on modeling and investigating the tire-terrain interaction on several terrains to better predict off-road truck performance. The truck tire used in this research is the off-road Regional Haul Drive (RHD) size 315/80R22.5 drive tire. The truck tire is built node-by-node using Finite Element Analysis (FEA) technique and is validated using different dynamic and static tests that are compared to the manufacturer's measured data. The terrains are modeled and calibrated using the Smoothed-Particle Hydrodynamics (SPH) instead of the classical FEA technique. Furthermore, two soil moisturizing techniques are presented to model moist soils, the virtually calibrated moist sand is validated against physical measurements. The in-plane and out-of-plane rigid ring tire model parameters are calculated for the off-road tire running on various terrains. The tire-terrain interaction is performed under several operating conditions and the effect of the operating conditions are investigated. Furthermore, a detailed study of the rolling resistance coefficient prediction over different terrains is presented. In this research work, the hydroplaning phenomenon is investigated. The hydroplaning speed of the tire is computed under different operating conditions. A novel equation to predict the truck tire hydroplaning speed as a function of several tire operational parameters is developed and validated against an empirical equation. In addition, the rigid ring tire model is integrated into a highly advanced full vehicle model to predict the truck on-road and off-road performance. Nonetheless, in order to validate the simulation results of the truck tire-terrain interaction obtained in this thesis physical testing was carried out in Gothenburg, Sweden by Volvo Groups Truck Technology.
Author : Mirwais Sharifi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Modelling and Validation of Agricultural Tire-terrain Interaction written by Mirwais Sharifi and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of Finite Element Analysis (FEA) and simulation software has been extensively used for many engineering applications. More precisely, computerized methods have paved way for accurately simulating tire-terrain interaction. By predicting forces, vibrations, and numerous physical effects, any industry with pneumatic tires can greatly reduce time, cost and effectively design and improve their machinery. The modelling and validation of a High Lug Farm Service (HLFS) agricultural tire is carried out in order to accurately predict tire-terrain interaction. In conjunction with the tire, two agricultural soils are modelled using Smoothed-Particle Hydrodynamics (SPH) method and calibrated to experimental results. An analytical off-road rigid ring model is used to model the HLFS tire's interaction with a surface. The soil dynamics of the HLFS tire running on soil is researched and compared to experimental results. Steering characteristics including self-aligning moment, rolling resistance coefficients, relaxation lengths were obtained under various operating conditions.
Author : Sally Annette Shoop
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.3/5 (91 download)
Download or read book Finite Element Modeling of Tire-terrain Interaction written by Sally Annette Shoop and published by . This book was released on 2001 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kristian Lee Lardner
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Prediction of the Off-road Rigid-ring Model Parameters for Truck Tire and Soft Soil Interactions written by Kristian Lee Lardner and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant time and cost savings can be realized through the use of virtual simulation of testing procedures across diverse areas of research and development. Fully detailed virtual truck models using the simplified off-road rigid-ring model parameters may further increase these economical savings within the automotive industry. The determination of the off-road rigid-ring parameters is meant to facilitate the simulation of full vehicle models developed by Volvo Group Trucks Technology. This works features new FEA (Finite Element Analysis) tire and SPH (Smoothed Particle Hydrodynamics) soil interaction modeling techniques. The in-plane and out-of-plane off-road rigid-ring parameters are predicted for an RHD (Regional Haul Drive) truck tire at varying operating conditions. The tire model is validated through static and dynamic virtual tests that are compared to previously published literature. Both the in-plane and out-of-plane off-road rigid-ring RHD parameters were successfully predicted. The majority of the in-plane parameters are strongly influenced by the inflation pressure of the tire because the in-plane parameters are derived with respect to the mode of vibration of the tire. The total equivalent vertical stiffness on a dry sand is not as heavily influenced by the inflation pressure compared to predictions on a hard surface. For perspective, at 110 psi, the dry sand total vertical stiffness is nearly nine times smaller than that determined on the hard surface, while the lateral stiffness on soft soil (Dry Sand) is at a minimal of three times higher than that of the corresponding values tested on a hard surface. The cornering stiffness is primarily load dependant because the inflation pressure is only noticeably influential at high vertical loads. More importantly, the soil builds in front of the tire, creating what is called a bulldozing effect, during high slip angles. The additional lateral force of the soil exerted onto the tire during cornering maneuvers may contribute to higher than expected results and may be confirmed through future investigation of the cohesion of the soil model.
Author : Mehrsa Marjani
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Development of FEA Wide-base Truck Tire and Soil Interaction Models written by Mehrsa Marjani and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tires are considered one of the most important components of ground vehicles as they are the only link between the chassis and ground. They support the vehicle weight and cushion road surface irregularities to provide a comfortable ride. Tires are designed in a way that provide necessary tractive, braking, and cornering forces to form a safe and stable ride for ground vehicles. Recent advancements in computerized and virtual modeling provided an efficient methodology for accurate prediction of tire characteristics. In this thesis Finite Element Analysis (FEA) is employed as a method to accurately construct a new virtual wide-base tire model, validate it, and then study rolling resistance of the tire on a hard surface. This thesis includes tire-soil interaction and effects of soil on tires rolling resistance. To accurately study rolling resistance on soft soil, various soil models are created by using FEA and Smoothed Particle Hydrodynamics (SPH), as a representative of dry sand soil. Soil models are calibrated by using shear-displacement and pressure-sinkage simulation tests. The simulation results are then compared to published data. Also, the created soil models are compared to each other to determine the optimum one based on computational time efficiency and accuracy. SPH, as the accurate current method for soil modeling, has long computational solving time. In this thesis FEA/SPH hybrid soil models are studied and modified to achieve lower computational solving time while having the desirable accuracy. Rolling resistance of tire on each soil model is carried out through various loads and inflation pressures and the simulation results are compared to physical test results to examine the accuracy of each soil model. The new hybrid soil model created in this thesis reduces the computational CPU time almost by half and slightly increases accuracy compared to full SPH soil model.
Author : Ryan Lescoe
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (66 download)
Download or read book Improvement of Soil Modeling in a Tire-soil Interaction Using Finite Element Analysis and Smooth Particle Hydrodynamics written by Ryan Lescoe and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sally A. Shoop
Publisher :
ISBN 13 :
Total Pages : 59 pages
Book Rating : 4.:/5 (498 download)
Download or read book Finite Element Modeling of Tire-terrain Interaction written by Sally A. Shoop and published by . This book was released on 2001 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roger W. Meier
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (359 download)
Download or read book Proceedings, First North American Workshop on Modeling the Mechanics of Off-Road Mobility, 5-6 May 1994 written by Roger W. Meier and published by . This book was released on 1994 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Charles Chiroux
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (489 download)
Download or read book Three Dimensional, Non-linear, Finite Element Analysis of Compactable Soil Interaction with a Hyperelastic Wheel written by Robert Charles Chiroux and published by . This book was released on 2001 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lan Meng
Publisher :
ISBN 13 :
Total Pages : 324 pages
Book Rating : 4.3/5 (129 download)
Download or read book Truck Tire/pavement Interaction Analysis by the Finite Element Method written by Lan Meng and published by . This book was released on 2002 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fatemeh Gheshlaghi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Modeling and Analysis of Off-road Tire Cornering Characteristics written by Fatemeh Gheshlaghi and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cornering performance characteristics of wheeled vehicles substantially rely on the forces/moments generated from interactions between pneumatic tires and terrains. Accurate models are thus required to predict these forces/moments to be employed in vehicle simulations for development and design. The goal of this dissertation research is to provide a virtual testing environment in Pam-Crash software as an alternative to actual tests for Finite Element Analysis (FEA) and Smoothed Particle Hydrodynamics (SPH) analysis of rolling tire interactions on deformable terrains. SPH method and hydrodynamics-elastic plastic material were used to simulate different soil types that are often utilized in vehicle-terrain interactions. Two pressure-sinkage and shear-strength experiments were used to calibrate the terrains. The simulation findings were compared with the measured data that showed good agreements. Furthermore, a detailed analysis of the rolling resistance coefficient and cornering properties of the tire over various terrains is presented, as well as the development of Genetic Algorithms (GA) to determine the mathematical relations for the cornering force, self-aligning moment, and overturning moment as functions of important operating factors. Cornering tests were performed for the RHD tire operating over the mud soil to examine the validity of the GA-based cornering force, self-aligning moment, and overturning moment relationships. It was concluded that the identified mathematical relations could provide very good estimations of the cornering characteristics under a broad range of operating conditions and soils.
Author : Moustafa El-Gindy
Publisher : Springer Nature
ISBN 13 : 3031362160
Total Pages : 469 pages
Book Rating : 4.0/5 (313 download)
Download or read book Road and Off-Road Vehicle Dynamics written by Moustafa El-Gindy and published by Springer Nature. This book was released on 2023-07-10 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces and provides a detailed understanding of on- and off-road vehicle dynamics. It discusses classical on-road tyre mechanics, including finite element tyre modelling and validation, using a combination of theoretical and experimental data sets. Chapters explore new computational techniques that describe terrain models and combined to develop better off-road vehicle models, and focus is placed on terrain characterization and modelling, using two popular modelling techniques, as well as performance characteristics of off-road vehicles - including rolling and driven combinations, traction, and steering. The effect of multi-pass and soil compaction on tyre performance is described as well. The book presents a unique neuro-tyre model for both on-road and off-road situations, capable of computing the steering, braking characteristics, and soil compaction. Road vehicle characteristics are described, including the stability and control, roll centre and roll axis, and rollover mechanics. The road vehicle braking performance is also described, including the brake components, choice of brake, and the transient load transfer. Finally, the dynamics and control of multi-wheel combat vehicles are presented and described extensively. The book is dedicated to undergraduate and graduate engineering students, in addition to researchers, and the automotive industry. As well as provide the readers with a better understanding of vehicle dynamics and soil mechanics. The book is also beneficial for automotive industries looking for a quick and reliable model to be implemented in their main software.
Author : Song-tao Chen
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Study of Tire-terrain Interaction Using the Finite Element Method written by Song-tao Chen and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gianpiero Mastinu
Publisher : CRC Press
ISBN 13 : 0849333229
Total Pages : 1710 pages
Book Rating : 4.8/5 (493 download)
Download or read book Road and Off-Road Vehicle System Dynamics Handbook written by Gianpiero Mastinu and published by CRC Press. This book was released on 2014-01-06 with total page 1710 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring contributions from leading experts, the Road and Off-Road Vehicle System Dynamics Handbook provides comprehensive, authoritative coverage of all the major issues involved in road vehicle dynamic behavior. While the focus is on automobiles, this book also highlights motorcycles, heavy commercial vehicles, and off-road vehicles. The authors of the individual chapters, both from automotive industry and universities, address basic issues, but also include references to significant papers for further reading. Thus the handbook is devoted both to the beginner, wishing to acquire basic knowledge on a specific topic, and to the experienced engineer or scientist, wishing to have up-to-date information on a particular subject. It can also be used as a textbook for master courses at universities. The handbook begins with a short history of road and off-road vehicle dynamics followed by detailed, state-of-the-art chapters on modeling, analysis and optimization in vehicle system dynamics, vehicle concepts and aerodynamics, pneumatic tires and contact wheel-road/off-road, modeling vehicle subsystems, vehicle dynamics and active safety, man-vehicle interaction, intelligent vehicle systems, and road accident reconstruction and passive safety. Provides extensive coverage of modeling, simulation, and analysis techniques Surveys all vehicle subsystems from a vehicle dynamics point of view Focuses on pneumatic tires and contact wheel-road/off-road Discusses intelligent vehicle systems technologies and active safety Considers safety factors and accident reconstruction procedures Includes chapters written by leading experts from all over the world This text provides an applicable source of information for all people interested in a deeper understanding of road vehicle dynamics and related problems.
