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Influence of Vehicle Body Torsional Stiffness on the Vehicle Controllability and Stability of Medium-Duty Trucks
Technical Paper
891295
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Language:
English
Abstract
A reduction in vehicle weight sometimes results in a reduction in truck body torsional stiffness. Hence, the authors investigate the influence of vehicle body torsional stiffness on vehicle controllability and stability. A simulation analysis and vehicle test are carried out on a medium-duty truck, and the frequency response characteristics of the vehicle are studied by changing vehicle design parameters. The results show that a reduction in body torsional stiffness does not affect the yaw and lateral characteristics of vehicle motion, but increases the steady state gain of the front roll angle. Accordingly, even if body torsional stiffness is unavoidably lowered, appropriate controllability and stability can be maintained by increasing the roll stiffness of the front suspension, thereby reducing the front roll angle.
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Authors
Topic
Citation
Hasegawa, S., Kusahara, Y., and Watanabe, Y., "Influence of Vehicle Body Torsional Stiffness on the Vehicle Controllability and Stability of Medium-Duty Trucks," SAE Technical Paper 891295, 1989.Also In
References
- Mori T. “Calculations on the Roll Stiffness of Trucks Using Nonlinear Spring Model” Nissan Diesel Technical Review 50 1988
- Emori R. I. Horiguchi J. Ikami T. “Motion of Tractor-Semitrailer in Accident-Prone Conditions” IPC-4, 871181 1987
- Miki S. “Method for Evaluating Stability and Handling of a Truck Considering Body Torsional Rigidity” SAE paper 881870 1989
- Shibahata Y. Ikawa K. Irie N. “The Improvement of Vehicle Stability and Controllability by Rear Suspension” Nissan Technical Review 19 1983
- Abe M. “Vehicle Dynamics and Control” Kyoritsu Shuppan 1979