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Development of an Engine Mount Optimization Method Using Modal Parameters
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English
Abstract
The purpose of this study was to develop a simple optimization method for use in designing vibration insulators. With this method, stiffness, location and inclination of each insulator are used as design parameters. A performance index consisting of vehicle modal parameters expressed as eigenvalues and eigenvectors has been constructed to evaluate low-frequency idle/shake performance and higher frequency vibration performance involving road/engine inputs. Using this performance index and the sensitivity of the modal parameters, a designer can easily find a suitable direction for optimizing mount performance and thereby obtain a stable solution. The new method was employed to optimize an engine mount system. Experimental data obtained on the system validated the accuracy of the calculated results and showed an improvement in idle/shake performance. This method is a useful tool in designing optimum vibration insulators.
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Citation
Arai, T., Kubozuka, T., and Gray, S., "Development of an Engine Mount Optimization Method Using Modal Parameters," SAE Technical Paper 932898, 1993, https://doi.org/10.4271/932898.Also In
References
- Duncan, A. “Application of Modal Modeling and Mount System Optimization to Light Truck Ride Analysis,” SAE 811313 1981
- Greck, P. Patton, R. “Front Wheel Drive Engine Mount Optimization,” SAE 840736 1984
- Saitoh, S. Igarashi, M. “Optimization Study of Engine Mount Systems,” JSAE, 891081 May 1989
- Fox, R. Kapoor, M. “Rates of Change of Eigenvalues and Eigenvectors,” AIAA Journal 6 December 1968 2426 2429