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Ride Dynamics and Pavement Loading of Tractor Semi-Trailers on Randomly Rough Roads
Technical Paper
2004-01-2622
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An investigation of the vertical dynamics of a tractor semi-trailer traversing a random road profile was conducted. This paper presents the development of a 14 degree-of-freedom (DOF), dynamic ride model of a tractor semi-trailer. It is based on work previously conducted by Vaduri and Law [1] and Law et al [2]. The DOFs include: (a) vertical displacements of each of the five axles, the tractor frame, the engine on its mounts, the cab on its suspension, and the driver's seat; (b) pitch displacements of the trailer with respect to the tractor, the cab, and the rigid tractor frame; and, (c) the first bending or beaming modes of the tractor and trailer frames. The model also incorporates suspension friction, and tire non-uniformities. The simulation of the model is conducted using MATLAB software.
Further, the model is used to examine the effects on ride and pavement loading of wide-base and conventional tires, suspension friction, tractor and trailer beaming, and statistical variations in parameters such as tire pressure, axle suspension stiffness, etc.
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Citation
Trangsrud, C., Law, E., and Janajreh, I., "Ride Dynamics and Pavement Loading of Tractor Semi-Trailers on Randomly Rough Roads," SAE Technical Paper 2004-01-2622, 2004, https://doi.org/10.4271/2004-01-2622.Also In
References
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