Making Sense of Large FEA NVH Databases using SEA Concepts

2007-01-2183

05/15/2007

Event
SAE 2007 Noise and Vibration Conference and Exhibition
Authors Abstract
Content
The paper presents an energetic post-processing methodology for large-scale vibro-acoustic finite element models. Starting from a dynamic and an acoustic modal basis produced by a finite element analysis (FEA), the methodology produces:
  1. 1
    synthetic and pertinent energetic outputs;
  2. 2
    optimal SEA partitions of the finite element mesh;
  3. 3
    quality indicators of existing SEA partitions.
The methodology involves six different steps, some required, some optional:
  1. 1
    automatic partitioning of the FEA model in patches;
  2. 2
    calculation of distribution matrices;
  3. 3
    definition of mechanical loads;
  4. 4
    definition of damping characteristics;
  5. 5
    modal-based vibro-acoustic response calculation;
  6. 6
    energetic post-processing;
  7. 7
    automatic partitioning in SEA subsystems;
  8. 8
    verification of existing SEA partitions.
Each step will be presented in turn. The methodology will be illustrated by application of the successive steps to a Renault Laguna body and an Alstom two-storey TGV train section.
Meta TagsDetails
DOI
https://doi.org/10.4271/2007-01-2183
Pages
7
Citation
Van den Nieuwenhof, B., Lielens, G., Coyette, J., Guyader, J. et al., "Making Sense of Large FEA NVH Databases using SEA Concepts," SAE Technical Paper 2007-01-2183, 2007, https://doi.org/10.4271/2007-01-2183.
Additional Details
Publisher
Published
May 15, 2007
Product Code
2007-01-2183
Content Type
Technical Paper
Language
English