Energy Flow Method for Mid-Frequency Vibration Analysis

2003-01-1454

05/05/2003

Event
SAE 2003 Noise & Vibration Conference and Exhibition
Authors Abstract
Content
The Energy Flow Method (EFM), which is based on a Finite Element Analysis (FEA) model and its modal frequency response solution is presented in this paper. The energy and power for each subsystem are the primary response and excitation parameters as in the Statistical Energy analysis (SEA) method. This gives a broad-brush prediction by averaging over both frequency and spatial domain. This prediction is useful when uncertainties exist in the model. The FEA model is used to capture the geometry detail, which is critical in mid-frequency vibration. As an example, a five-plate system is studied using various methods, including traditional FEA, SEA and EFM. The last one has been implemented in MSC/NASTRAN. A discussion is given to understand the limitation of SEA and FEA application in mid frequency response.
Meta TagsDetails
DOI
https://doi.org/10.4271/2003-01-1454
Pages
6
Citation
Zhang, Q., Wang, C., Wang, D., Qian, M. et al., "Energy Flow Method for Mid-Frequency Vibration Analysis," SAE Technical Paper 2003-01-1454, 2003, https://doi.org/10.4271/2003-01-1454.
Additional Details
Publisher
Published
May 5, 2003
Product Code
2003-01-1454
Content Type
Technical Paper
Language
English