Optimization of structural dynamic behaviour based on effective modal parameters

Optimization of complex structures often leads to high calculation costs. Indeed, the structure has to be frequently reanalysed in order to update the optimization criteria. We propose an optimization method based on effective modal parameters. These parameters are close to the modal matrices used f...

Full description

Saved in:
Bibliographic Details
Published in:International journal for numerical methods in engineering 2007-04, Vol.70 (5), p.523-542
Main Authors: Besset, S., Jézéquel, L.
Format: Article
Language:English
Subjects:
Acoustics
Computational techniques
Engineering Sciences
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Mathematical methods in physics
Mechanics
modal analysis
modal criteria
optimization
Physics
Solid mechanics
Static elasticity (thermoelasticity...)
Structural and continuum mechanics
Structural mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Optimization of complex structures often leads to high calculation costs. Indeed, the structure has to be frequently reanalysed in order to update the optimization criteria. We propose an optimization method based on effective modal parameters. These parameters are close to the modal matrices used for the modal analysis of a structure. Thus, once the structure has been analysed, it becomes very easy to calculate optimization criteria. First, we will explain the modal analysis that we will use in this paper. A modal model will be used to analyse the hollow parts of the structure. The modal analysis of the whole structure will be performed using substructuring and ‘double modal synthesis’ proposed by Jezequel. Secondly, we will explain how to obtain effective modal parameters and their use for optimization. Finally, we will show the efficiency of these parameters through the optimization of a complex structure, using two types of optimization methods. Copyright © 2006 John Wiley & Sons, Ltd.
ISSN:0029-5981
1097-0207
DOI:10.1002/nme.1890