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Title Enhancement of a Rolling Resistance Rig for Force and Moment Testing of Tires
URL
Publication Date
Date Accessioned
Degree MS
Discipline/Department Mechanical Engineering
Degree Level masters
University/Publisher Virginia Tech
Abstract Tire testing has been one of the important aspects of the tire industry because it helps identify the tire behavior 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 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 previous one using dead weights is also discussed. This study also talks about the structural and vibrational finite element analysis of a tire testing machine. Since the machine was designed to conduct different tire tests, different structural requirements of the tire positioning mechanism pertaining to each test were taken into consideration, and the structure was analyzed for maximum forces and moments acting on the assembly. Cleat testing subjects the tire as well as the structure to an impulse force which calls for the vibrational analysis of the assembly to avoid the structure from resonating. The design was modified to get it easily manufactured and assembled. These design changes and the aspects taken into consideration have also been discussed.
Subjects/Keywords tire testing machine; force and moment test; rolling resistance test; cleat test; tire positioning mechanism; loading mechanism
Contributors Taheri, Saied (committeechair); West, Robert L. (committee member); Sandu, Corina (committee member)
Rights In Copyright
http://rightsstatements.org/vocab/InC/1.0/
Country of Publication us
Record ID handle:10919/71421
Repository vt
Date Indexed 2020-10-14
Grantor Virginia Polytechnic Institute and State University
Issued Date 2016-06-23 00:00:00
Note [degree] Master of Science;

Sample Search Hits | Sample Images | Cited Works

…19 Figure 13: Tire positioning mechanism ............................................................................ 24 Figure 14: Force Hub Mount – Front and Back View ...................................................... 25 Figure 15: Front Box…

…Cleaning using Acetone ........................................................... 38 Figure 27: Meshed Model, Stress Contour and Deformation Contour for Reaction Rod 40 Figure 28: Stress Contour for Static Analysis of Tire Positioning Mechanism

…42 Figure 29: Magnified Stress Contour for Static Analysis of the Tire Positioning Mechanism ........................................................................................................................ 43 Figure 30: Deformation Contour for…

…Static Analysis of the Tire Positioning Mechanism 43 Figure 31: Meshed Model for Frame 1 and Frame 2 ........................................................ 45 Figure 32: Deformation Contour for Frame 1, Modal Frequency = 65 Hz ...................... 46…

…Frequency = 89.1 Hz) ............................ 48 Figure 36: 1st Mode Shape for Tire Positioning Mechanism (Eigen Frequency = 98.91 Hz)…

…75 Figure 68: Force Hub Mount Front Flange ....................................................................... 75 Figure 69: Supporting Structure for the Tire Positioning Mechanism ............................. 76 x Figure 70: SAE Tire Axis…

positioning mechanism was capable of aligning the tire at different slip and camber angles on a drum driven by a motor. This machine also had the provision of measuring the rapid steering response of the tire, which was done by driving the tire with the help…

…using different steel belts. The tire positioning system used hydraulic motors to align the tire at the required position on the belt. The tire positioning mechanism also had the capability of positioning the tire onto one of the drums used for…

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