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Lateral Shake Analysis of Open Top Cars
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English
Abstract
This paper analyzes the vibration of open-top cars known as lateral shake. The characteristics of the phenomenon were identified by means of road tests and a test method called the shake test was devised to reproduce these characteristics in order that the respective roles of the suspension, body and engine could be determined. On the basis of the analysis findings, a simple but practical simulation model was realized and used to investigate various methods of reducing lateral shake. The simulations indicated that although changing the natural frequency of the suspension has little effect, increasing the natural torsional frequency of the body and/or utilizing the engine as a dynamic damper results in a significant improvement. Further experiments conclusively demonstrated that by optimizing the body structure in accordance with FEM analysis results and optimizing the spring constant of the engine mounts, the level of lateral shake can be halved.
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Citation
Yamauchi, A., Nagano, M., and Kimura, T., "Lateral Shake Analysis of Open Top Cars," SAE Technical Paper 920409, 1992, https://doi.org/10.4271/920409.Also In
References
- Maeda T. Tomita T. Yamane K. “The development of FAMILIA CABRIOLET” Mazda Technical Review No. 4 1986
- Urushiyama Y. Noguchi H. Tobita T. “Sensitivity Analysis Using Frequency Response Function in NVH Analysis” Journal of the JSAE 41 13 1987