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 165 for “"tires"”.
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A comprehensive analytical model for pneumatic tires
This study presents a comprehensive analytical tire model for both vehicle dynamic simulation and tire design. The model is composed of two parts--modeling of the contact mechanism and determination of the tire forces/moments. A static circular beam model is introduced for the contact mechanism, in …
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Modeling, Design, and Assembly of Spring Tires
… thesis discusses the modeling of these spring tires with numerical methods along with the design of two spring tire prototypes for use on the aforementioned rover platforms. A streamlined assembly process for these compliant wheels is also outlined as well as the results of compression testing, …
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Potential use of wide tires for steep slope skidding
… investigated the potential use of wide skidder tires for forest harvesting operations on steep slopes. During the summer of 1984, field tests were conducted to compare the performance characteristics of 24.5-32 and 66-43 rubber tires on a JD-640 grapple skidder loaded with tree length material. …
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Suspension Controls and Parameter Estimation Using Accelerometer Based Intelligent Tires
… when turning. Accelerometer based intelligent tires have been used to estimate vehicle states like vertical load on tire, velocity of the vehicle, unsprung mass acceleration, and forces on a tire. All these estimations would be helpful in observing various parameters of a vehicle using data …
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Hybrid Friction Estimation based on Intelligent Tires and Vehicle Dynamics
… regarding the interaction between the tires and the road surface. This knowledge gap significantly impacts the safety and control of the vehicle. Thus, to address this issue, this research introduces a novel fusion approach to estimate friction at the tire-road contact interface. This …
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Real-Time Implementation of Road Surface Classification using Intelligent Tires
… were placed on the inner liner of the tires. An advanced signal processing technique was utilized along with a machine learning model to classify the road surfaces. The instrumented Volkswagen Jetta with intelligent tires was retrofitted with new instrumentation for collecting data and …
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Design and Analysis of an Innovative run-flat system for pneumatic tires
Pneumatic tires have been an essential part of the automobile since the early 20th century. Providing load carrying, braking, accelerating and turning capability as well as a certain degree isolation from the road, they fail to function without the presence of air pressure inside them. Run-flat …
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Solid waste disposal and enforcement with an application to Virginia's scrap tires
This dissertation fills a void in the economics literature related to the effect of enforcement costs on solid waste disposal policy. The analysis demonstrates that the choice of a cost effective policy tool, be it either an enforcement mechanism or targeted subsidy, is an empirical question …
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Handling Performance Analysis of Run-Flat and Standard Tires Using Pacejka Tire Model
… the handling performance of standard pneumatic tires and self-supporting run-flat tires under deflation scenarios using a combined finite element and vehicle dynamics simulation approach. Finite element models of both tire types were developed in Abaqus to extract lateral force characteristics …
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Enhancement of a Rolling Resistance Rig for Force and Moment Testing of Tires
… which further helps in improving the design of tires. It also helps automotive manufacturers choose the best tire for their automobiles. Indoor tire testing helps in relating the data better because of greater repeatability of the testing setup as compared to outdoor testing. This study focusses …
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Structure-Borne Vehicle Interior Noise Estimation Using Accelerometer Based Intelligent Tires in Passenger Vehicles
With advancements in technology, electric vehicles are dominating the world making Internal Combustion engines less relevant, and hence vehicles are becoming quieter than ever before. But noise levels remain a significant concern for both passengers and automotive manufacturers. The vehicle's …
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The Application of Intelligent Tires and Model Base Estimation Algorithms in Tire-road Contact Characterization
… to study the application of the intelligent tires to improve mobility; first, a wheeled ground robot was designed and built. A Fuzzy Logic algorithm was developed and validated using the robot for classifying different road surfaces such as asphalt, concrete, grass, and soil. The second test …
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Improved Vehicle Dynamics Sensing during Cornering for Trajectory Tracking using Robust Control and Intelligent Tires
Tires, being the only component of the vehicle in contact with the road surface, are responsible for generating the forces for maintaining the vehicle pose, orientation and stability of the vehicle. Additionally, the on-board advanced chassis control systems require estimation of these tire-road …
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An Analysis of the Financial Expansion of Business Corporations Engaged in the Manufacture of Rubber Tires and Tubes, 1946-1960
Made available in DSpace on 2014-12-09T17:52:43Z (GMT). No. of bitstreams: 1 6511739.pdf: 8530621 bytes, checksum: 80dc5106b403ec86eb90851a05804149 (MD5) Previous issue date: 1965
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Influence of rear wheel tire type on wheelchair propulsion biomechanics
… speed using five different pairs of tires. Upper limb and trunk kinematics, perceived exertion, stroke pattern and the temporal characteristics of propulsion were measured. When using pneumatic (air filled) tires, with lower rolling resistance, participants had lower push frequency (p …
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