Predicting the Loudness of Rattle in a Center-Console

摘要

This paper presents a numerical analysis of the loudness of various 'rattle' events that occur in a vehicle center-console when placed in a random vibration environment. The analysis uses a low frequency Finite Element model to predict the probabilities that rattle will occur at various locations across the console. Closed-form analytical expressions are used to estimate broadband contact forces at the various impact locations. A full-spectrum SEA model is then used to predict the loudness of the individual rattle events. The initial analysis of the center-console indicated a number of audible rattle events which were also observed in road tests. The method is discussed and example results are presented.