Title: Modeling wave dispersion and band gaps in heterogeneous elastic media
Authors: Rohan, Eduard
Seifrt, František
Citation: Applied and Computational Mechanics. 2007, vol. 1, no. 1, p. 243-254.
Issue Date: 2007
Publisher: University of West Bohemia
Document type: article
článek
URI: http://www.kme.zcu.cz/acm/old_acm/full_papers/acm_vol1no1_p028.pdf
http://hdl.handle.net/11025/1804
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: fononické materiály;periodická mikrostruktura;homogenizace;modelování vln;heterogenní elastická média
Keywords in different language: phononic materials;periodic microstructure;homogenization;modelling of waves;heterogenous elastic media
Abstract: In this paper we report recent developments and results concerning validation of the homogenization approach applied in modeling waves in strongly heterogeneous elastic media. The homogenization limit model is obtained for stationary waves, but can also be used to estimate dispersion properties for long guided waves propagation. Band gaps distribution depends on the material contrast and on the geometrical arrangements in the microstructure. Similarity between discrete structures and heterogeneous continua is used to demonstrate the dispersion phenomena. The modeling approach has been extended to the piezo-phononic materials, which may be useful in designing smart materials. Also problems of optimal shape design at the microscopic level were pursued.
Rights: © 2007 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 1, number 1 (2007)
Články / Articles (KME)
Volume 1, number 1 (2007)

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