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MODELLING AND ANALYSIS OF ROTATIONAL STEERING VIBRATION FOR SUV USING MULTIBODY DYNAMICS TOOL.
Technical Paper
2008-28-0045
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Steering vibration is a major NVH issue that affects overall NVH comfort in passenger cars. There are two types of fundamental steering vibrations [1]:
- Vertical/lateral translational vibration
- Rotational vibration (Focus of this study)
Many studies of mechanisms contributing to steering wheel nibble have been carried out in the past. An overview of stimulation sources (disturbance factors) to steering nibble like wheel imbalance mass is given. As an example of the controversial aspects of the problem, this paper deals with the assumption of suspension compliance characteristic and its conflict with the observed transfer of vibration caused by small (realistic) amounts of imbalance or tyre force variation. The tyre imbalance is virtually created by adding small mass on front right wheel. After modelling and correlating the full vehicle in ADAMS/car, it is possible to identify a natural frequency that contributes reasonably to the nibble phenomenon in the steering wheel. Based on this model, a CAE study on parameter sensitivity, using the design of experiments' approach, is presented.
A correlation with experimental results for K&C for front suspension subsystems is also presented.
Topic
Citation
Pahwa, G., "MODELLING AND ANALYSIS OF ROTATIONAL STEERING VIBRATION FOR SUV USING MULTIBODY DYNAMICS TOOL.," SAE Technical Paper 2008-28-0045, 2008, https://doi.org/10.4271/2008-28-0045.Also In
References
- Rao Singiresu S. “Mechanical Vibration” Pearson Education 2004
- Nutwell Brian Yu Jinghong Brickner Brian Johnson Michael “Analysis of Vehicle Chassis Transmissibility of Steering Shimmy and Brake Judder: Mechanism Study and Virtual Design of Experiment” SAE Paper no. 2007-01-2342
- Park Joo-Bae Kim Kwang-Woong Lee Sang-Ju “Tyre Mass Imbalance, Rolling Phase Difference, Non-Uniformity- Induced Force Difference, and Inflation Pressure Change Effects on Steering Wheel Vibration SAE Paper no. 2005-01-2317