This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Making Sense of Large FEA NVH Databases using SEA Concepts
Technical Paper
2007-01-2183
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
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:
- 1synthetic and pertinent energetic outputs;
- 2optimal SEA partitions of the finite element mesh;
- 3quality indicators of existing SEA partitions.
The methodology involves six different steps, some required, some optional:
- 1automatic partitioning of the FEA model in patches;
- 2calculation of distribution matrices;
- 3definition of mechanical loads;
- 4definition of damping characteristics;
- 5modal-based vibro-acoustic response calculation;
- 6energetic post-processing;
- 7automatic partitioning in SEA subsystems;
- 8verification 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.
Recommended Content
Authors
Topic
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.Also In
References
- Karypis G. Kumar V. METIS: A software package for partitioning unstructured graphs, partitioning meshes and computing fill-reducing orderings of sparse matrices 1998
- Mace B. Shorter P. Energy flow models from finite element analysis J. Sound Vib. 2000 233 3 369 389
- Berry M.J.A. Linoff G. Data mining techniques, for marketing, sales and customer support Wiley New York 1997
- Totaro N. Guyader J.L. SEA substructuring using cluster analysis: the MIR index J. Sound Vib. 2006 290 264 289
- Totaro N PhD Thesis 2004 INSA Lyon