Analytical and Parametric Optimization of Force Transmissibility by Taguchi Method for Double Stage Engine Mountings
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Abstract
It is essential to design a warship to avoid detection by submarines or enemy ships. One of the recent techniques used is to mount all vibrant machinery on a double stage vibration isolation system. For high structure-borne noise attenuation there is requirement of two-stage mounting system. The main goal of current research work is to reduce vibration levels from machinery to foundation, and thereby to reduce radiate noise levels from ship hull. The present work deals with the mathematical modeling and parametric optimization of force transmissibility (Ftr) for design of engine foundation system. The vertical vibrations of the system are assumed to be most predominant, and other types of vibrations are neglected. The research work is carried out for finding parameters of mounts and optimizing the same. The analysis is based on discrete system modeling. Taguchi method is used for finding optimal combination of process parameters based on S/N ratio and analysis of variance (ANOVA) is statistical technique to investigate contribution of each process parameters on the performance characteristic. The result shows that spring stiffness is most affecting process parameter.
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