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The dynamics of market, technology and competition have brought the focus towards the importance of low noise levels for everything from Automobiles to Home Appliances. In Home Appliance industry, where the product is generally placed in a confined space, consumers demand quiet and smoother running products with quality. Domestic Refrigerators are one of the major products in home appliances industries. Noise produced by refrigerator can be intense enough to cause discomfort to consumers. Thus, the concern with the noise produced by refrigerator has gained a great importance both for consumers and for manufacturers of refrigerators. To address the noise issue in a domestic refrigerator, NVH characteristic of a refrigerator needs to be evaluated. In general, Finite/Boundary Element (FE-BEM) method used for low to mid frequencies whereas Energy based Statistical Energy Analysis (SEA) method is very well effective to predict noise levels at high frequency with great success.Hybrid method in ESI-VA one software couples Finite Element Analysis (FEA) and Statistical Energy Analysis (SEA) techniques to predict structure and air borne noise in single analysis. This paper demonstrates methodology development for prediction of structure and airborne noise of refrigerator using hybrid FE-SEA method in full frequency range (100 Hz to 10000 Hz). In order to predict full refrigerator response successfully using Hybrid FE-SEA method, stiff and modally dense components of full refrigerator has been described by FE and SEA techniques respectively. Additionally, Predicted noise levels are validated with test data and correlated simulation model further used for noise improvement in current design.
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