Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"Rolling resistance"”.
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Development of mechanistic pavement rolling resistance model considering dynamic loading
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Development of mechanistic rolling resistance model for pavement life cycle assessment
… a major component of pavement LCA results from rolling resistance (RR) between vehicle-pavement interaction. This study focuses primarily on the development of mechanistic RR model to capture the impact of excess fuel consumption (EFC) and dynamic wheel load (DWL) caused by pavement roughness. …
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Multi-Scale Physics Based Modeling of Tire Rolling Resistance Considering Aging
… internal friction: a phenomenon referred to as rolling resistance. The interaction between the tire and the road surface is one of the most intricate and crucial phenomena in an automobile, because it is responsible for creating forces, moments, and deformation in the tire. Additionally, the …
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Influence of tire-pavement thermomechanical interaction on contact stresses and rolling resistance
… the tire-pavement contact stresses and rolling resistance or loss. A baseline hyperelastic tire model was generated to understand the effect of the applied load, tire-inflation pressure, and traveling speed on contact stresses. Utilizing tire-pavement contact stresses as the main …
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Enhancement of a Rolling Resistance Rig for Force and Moment Testing of Tires
… testing. This study focusses on modifying a rolling resistance machine to make it capable of force and moment and cleat testing along with the standard rolling resistance test. Additionally, the design of a mechanical loading mechanism (used to apply normal force on the tire) in place of the …
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Development of an Apparatus and Testing Strategy for Characterizing Rolling Resistance of Omnidirectional Wheels
… its requisite test apparatus to characterize the rolling resistance of omni wheels across various test conditions, and focuses specifically on the mechanical and electrical design of an apparatus which can measure the rolling resistance coefficient of omni wheels while modulating their load …
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Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions
… the tire-pavement system improves predictions of rolling resistance, fuel consumption, and greenhouse gas emissions. The main contribution of this research lies in the evaluation of tire and pavement as a semi-coupled system, assuming both are deformable bodies, while focusing on contact stresses, …
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Development and Execution of a Testing Strategy for Omnidirectional Wheels
… this often comes at the cost of increased rolling resistance compared to traditional caster wheels. The rolling resistance in omnidirectional wheels is higher than in many other wheels due to several factors including an irregular tread shape, material compliance, and friction in the …
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Influence of rear wheel tire type on wheelchair propulsion biomechanics
… using pneumatic (air filled) tires, with lower rolling resistance, participants had lower push frequency (p < .05), higher self selected speed (p < .05), less perceived exertion, less shoulder internal rotation, and a longer push stroke than when using solid, high rolling resistance tires. As …
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Development of FEA wide-base truck tire and soil interaction models
… 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 …
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Development of truck tire-terrain finite element analysis models.
… and soils are used together to estimate the rolling resistance of the tire over various terrains. The developed soil models are sufficient to model soils behaving like clay. The SPH soil models behave closer to actual soils, providing superior penetration and shear properties. This causes the …
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Applying Pavement Life Cycle Assessment Results to Enhance Sustainable Pavement Management Decision Making
… that relate pavement properties to vehicle rolling resistance and fuel consumption. These models were used, along with other tools to evaluate the impact of including the use phase of a pavement into pavement lifecycle assessments. A detailed project level lifecycle assessment was conducted, …
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Investigation of Severe Abrasive Truck Tyre Wear
In the design of tyres, rolling resistance and wear resistance cannot be optimized at the same time. Tyres with high rolling resistance have good wear performance and good adhesion, whereas tyres with low resistance have poor wear performance and poor adhesion. It is therefore necessary to …
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Analyzing Vibration in Omni-Wheels: A Design of Experiments Approach to Optimizing Omni-Wheel Selection
… by Ilkbahar [1] and Donnellan [2] explore their rolling resistance and static load capacity, a systematic analysis of vibration characteristics remains absent from the literature. This thesis presents an investigation of the vibration behavior of various omniwheel designs using a Design of …
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Energy methods for analyzing drag and inertia in cycling kinematics
… velocity, and power as a function of time. Rolling resistance, drag, inertial energy, and potential energy were then evaluated. An integral energy equation relating these terms to input power was developed. This is much more stable numerically than differential equations in the power and …
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Uncertainty quantification for pavement life-cycle stages
… of a product. It has been shown that rolling resistance (RR), a major component of pavement LCA use stage, has significant impact on transportation-related energy consumption. Pavement related RR mainly includes pavement structure, surface roughness (or smoothness) and texture. This …
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Modeling and analysis of Regional Haul Steer (RHS) truck tire model
… The interaction characteristics included the rolling resistance, cornering force, self-aligning moment, and overturning moment. The analysis was performed at different operating conditions including terrain depth, longitudinal speed, and vertical loads. In general, the results from both …
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