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Title Enhancement of a Rolling Resistance Rig for Force and Moment Testing of Tires
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
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;

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…Moment Measurement Capability ..................................................... 20 Table 3: Comparison of Parameters Relevant to Force and Moment Test, Rolling Resistance Test and Cleat Test

…day to cater for the market needs. This work talks about a new tire testing machine designed to conduct force and moment test, rolling resistance test and cleat test for passenger car tires and light truck tires. The design of the machine and the…

…This machine was redesigned and remodeled to conduct the force and moment test, rolling resistance test and cleat test on passenger car and light duty truck tires. The motive behind remodeling the machine was to be able to use it for university research…

…cleats can also be done on the same setup. 1.6 Research Objectives - To design a tire testing machine capable of conducting force and moment test, rolling resistance test and cleat test of tires which includes a tire positioning mechanism and a loading…

…surface is subtracted from the above values of FR to get the actual value of rolling resistance. c. Cleat testing helps in determining the tire response and its ability to absorb energy when excited by an impulse. This test is generally carried out on a…

…the cleat. The loading mechanism in the test setup needs to be rigid enough to sustain the high forces arising from cleat test to avoid any backlash. 13 CHAPTER 2: Design Concept Generation A rolling resistance machine donated by Test Measurement…

…lever Tests Carried Out Rolling resistance test Slip test, cleat test and rolling resistance test 2.2 Design Criteria The maximum values for the forces and moments for which the structural members of the frame have been designed were obtained based on…

…the data presented in the previously published literature. The maximum value of the normal force was ascertained based on the guidelines for cleat test. The guidelines specify the loading capacity to be twice that of the tire rating. Based on this…