Implementation of an Uncertainty Analysis Process to SEA Predictions

2007-01-2312

05/15/2007

Event
SAE 2007 Noise and Vibration Conference and Exhibition
Authors Abstract
Content
A process is implemented to propagate uncertainties inherent to the Statistical Energy Analysis (SEA) modeling practice to variance in predictions. A Monte Carlo based approach is scripted for the VA-One environment to account for uncertainties in gross parameters of SEA model subsystems. The variance module of the commercial software is used to estimate possible variations in local modal properties. A first-order expansion solution is applied to integrate uncertainties in the power inputs of the system. The impact of each type of source is assessed in computing overall variance in predictions. The process is applied to analysis of in-flight interior cabin noise predictions using a simplified aft fuselage section SEA model.
Meta TagsDetails
DOI
https://doi.org/10.4271/2007-01-2312
Pages
9
Citation
Cousineau-Bouffard, G., "Implementation of an Uncertainty Analysis Process to SEA Predictions," SAE Technical Paper 2007-01-2312, 2007, https://doi.org/10.4271/2007-01-2312.
Additional Details
Publisher
Published
May 15, 2007
Product Code
2007-01-2312
Content Type
Technical Paper
Language
English