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An Analysis on Vehicle Behaviors during Braking
Technical Paper
871232
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Language:
English
Abstract
When braking up a truck with a rigid axle type front suspension of parallel leaf springs, some steer angle deviations occur caused by relative movements between steering linkage pivot and the front axle. In case of heavy braking under nearly locking up conditions, it is expected that the vehicle may show some yawing motion during deceleration.
In this paper, vehicle behavior during braking were analyzed using a simplified simulation model. On the other hand, experiments were conducted to confirm the effects of these factors.
Comparing those results, it was proved that the analytical results show relatively good correspondence to these obtained from experiments and that vehicle behaviors during braking were greatly affected by the steer angle deviations and position of wheels which were locked.
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Authors
Citation
Kambara, H. and Nakano, N., "An Analysis on Vehicle Behaviors during Braking," SAE Technical Paper 871232, 1987.Also In
References
- Takanami Katsuji et al. “Brake Torque Measurement and Evaluation of Directional Stability under Braking” (Japanese), Isuzu Technical Journal 57 1972 1 7
- Sagishima Takao et al. “Consideration of Controllability and Stability of Automotive Vehicle from a View Point of Safety” (Japanese), Journal of Society of Automotive Engineers of Japan, Inc. 25 4 1971 337 387
- Karu Terutoshi “Some Aspects on Highway Wheel Alignment and Vehicle Dynamics on Icy Road” (Japanese), Journal of the Society of Automotive Engineers of Japan, Inc. 30 8 1976 662 668
- Kondo Masaichi “Kiso Jidosah Kogaku (Fundamentals on Dynamics of Road Vehicles)” (Japanese) Yokendo, Japan