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- W4380488336 abstract "Vehicle dynamics models rely on accurate input to estimate fuel consumption, dynamic loading, and ride comfort. One of those inputs is the tire’s responses to loading, usually given as a linear spring and a dashpot connected in parallel. This paper determines the load response and variation with the excitation frequency of two truck tires—a dual tire assembly (DTA) and a new-generation wide-base tire (WBT). The experimental program included variations in load, tire inflation pressure, displacement amplitude, and frequency. The tire was mounted to an axle frame connected to a 250-kN servo-hydraulic actuator, which applied the load to the tire frame. The experimental procedure was to load the tire assembly to the desired value, hold the load constant for 1 min to avoid residual deformations, and then apply a displacement-controlled sinusoidal wave at angular frequencies of 0.63, 3.14, 6.3, and 15.7 rad/s and three amplitudes (1.27, 2.54, and 5.08 mm). The loads applied to the tires were 26.7, 31.1, 35.6, 40.0, and 44.5 kN, and the tire-inflation pressures were 552, 689, and 827 kPa. Stiffness and damping depended on frequency, and simple equations were proposed to calculate the tire’s dynamic response. Regression analysis of the damping and stiffness was completed using power and polynomial functions. At constant amplitudes, the damping decreased exponentially with an increase in frequency, while stiffness exhibited a peak of around 3.14 rad/s. For a tire pressure of 689 kPa and an applied load of 40.0 kN, the largest difference in dynamic stiffness and damping between the WBT and DTA was 23.3% and 35.9%, respectively." @default.
- W4380488336 created "2023-06-14" @default.
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- W4380488336 date "2023-06-13" @default.
- W4380488336 modified "2023-09-25" @default.
- W4380488336 title "Laboratory Characterization of the Dynamic Response of Truck Tires" @default.
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- W4380488336 doi "https://doi.org/10.1061/9780784484890.032" @default.
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