Semi-Active Ride Comfort Evaluation of Heavy Vehicles Using a Hybrid Dynamic Model 2010-01-0718
In this paper, the driver ride comfort in a heavy vehicle (city bus) is studied under the sky-hook semi-active damping force policy. A new hybrid dynamic model composed of a continuous system and a discrete system are integrated in the current work. The chassis of the vehicle is assumed as the continuous beam supported on the discrete suspension springs and dampers. The driver and the seat are also considered as a discrete vibrating system. The dynamic equations are solved by using the assumed mode method, where the mode shapes of a free-free beam have been employed. The results of the semi-active system are compared with those of the passive one through simulations. The results indicate that the new hybrid dynamic model represents more degrees-of-freedom of the system for driver ride analysis compared to the discrete model. In addition, the results show that the semi-active system has a superior performance in terms of the ride comfort.
Citation: Saeedi, K., Fallah, M., and Bhat, R., "Semi-Active Ride Comfort Evaluation of Heavy Vehicles Using a Hybrid Dynamic Model," SAE Technical Paper 2010-01-0718, 2010, https://doi.org/10.4271/2010-01-0718. Download Citation
Author(s):
Khodabakhsh Saeedi, Mohammad Saber Fallah, Rama B. Bhat
Affiliated:
Concordia Univ.
Pages: 11
Event:
SAE 2010 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Load Simulation and Analysis in Automotive Engineering, 2010-SP-2274
Related Topics:
Vehicle ride
Comfort
Simulation and modeling
Buses
Vehicle dynamics /flight dynamics
Noise, Vibration, and Harshness (NVH)
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