Muthyala, Dhiraj Kumar
DESIGN AND EXPERIMENTAL ANALYSIS OF HUB CALIBRATION OF TIRE FORCE AND MOMENT TESTING MACHINE
1 online resource (60 pages) : PDF
University of North Carolina at Charlotte
Tire cornering force and moment data from an indoor tire testing machine is very important to auto-makers and tire researchers with respect to the performance of vehicles. As such, the quality of the tire data is also crucial and it is dependent on the accuracy and epeatability of the tests for a given tire. One valuable parameter in the quality of the tire data for a given tire testing machine is precise alibration. This thesis presents the design of a force and moment calibration setup for Michelin’s M-15 tire testing machine. Although 45years old, this machine will later demonstrate quite good force and moment measurement capability. Three calibration fixtures were designed to apply reference forces and moments on the hub of the tire testing machine as desired. By performing extensive calibration tests, the setup is fine-tuned to minimize the errors caused by load cell interaction and the geometrical inaccuracy of calibration setup itself. Furthermore, a standard calibration procedure has been developed to calibrate the Lateral Force (Fy), Aligning Moment (Mz) and Overturning Moment (Mx) for the M-15 tire testing machine. This comprehensive report will serve as a guide or hand-book for future calibrations. The calibration constants are determined for the M-15 machine that can be used for tire testing and the results of the calibration tests suggest that the error percentage in the tire data will be within 1% and which satisfies the SAE’s recommended accuracy for force and moment testing.
CALIBRATIONDESIGN AND EXPERIMENTPROTOCOLSTIRE DATATIRESTIRE TESTING MACHINE
Hill, JerreKeanini, Russell
Thesis (M.S.)--University of North Carolina at Charlotte, 2018.
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