High frequency structural and acoustic problems require prohibitive computational efforts. The tendency, nowadays, is to find a solution in statistical terms (SEA) through an average of the field variables on the space domain. A limitation of SEA is the loss of any local information. In contrast wit
ENERGY TRANSFER FOR HIGH FREQUENCIES IN BUILT-UP STRUCTURES
β Scribed by A. LE BOT
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 418 KB
- Volume
- 250
- Category
- Article
- ISSN
- 0022-460X
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β¦ Synopsis
This paper is concerned with the prediction of vibrations at high frequencies in built-up structures. In the high-frequency range, the dynamical behaviour of structures is driven by energy transfer rather than modal aspects. The description of systems in terms of energy is thus well-suited and leads to closed-form equations of an integral type on energy variables. The numerical solution of these equations is achieved with appropriate software called CeReS, and the results are compared with experimental measurements on a multi-plate structure.
2002 Academic Press
π SIMILAR VOLUMES
A local modal/perturbational method is described which enables estimates to be made of the statistics of frequency response functions of a system whose properties are uncertain. The method is computationally very e$cient, providing these estimates at little cost above that required to perform a sing