Experimental investigation of a hydraulic engine mount by taguchi method

Abstract

This study applied the design of experiment (DoE) to a hydraulic engine mount. Taguchi L16 orthogonal array was selected as an experimental plan, and various mounts were assembled and tested. The dynamic stiffness, Kd, values at 50 Hz frequency for +/- 0.1 mm vibration amplitude as the reference value were concluded. The best design combination, the priority order, and the contribution ratios of design parameters were determined by applying signal-to-noise ratio (S/N) and variance analysis (ANOVA). In the analyses, it was found that dynamic hardening, eta, and fluid volume, V, were much more effective than other parameters on the Kd. Then, the regression analysis was applied to create two equations considering all parameters and only two effective parameters. It was obtained that Kd values calculated from the two equations were close to each other and in good agreement with the experimental results of the mounts in the DoE and the other two mounts not included in the DoE. This study has shown that analytical equations that give accurate results can be concluded for Kd via the Taguchi method. (Received in October 2024, accepted in February 2025. This paper was with the author 2 weeks for 2 revisions.)