Title: Possibility of identification of elastic properties in laminate beams with cross-ply laminae stacking sequences
Authors: Zajíček, Martin
Dupal, Jan
Citation: Applied and Computational Mechanics. 2011, vol. 5, no. 2, p. 239-252.
Issue Date: 2011
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/index.php/acm/article/view/163/131
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: křížově vrstvený laminát;laminátové nosníky;genetický algoritmus;inverzní technika;model konečných elementů
Keywords in different language: cross-ply laminate;laminate beams;genetic algorithm;inverse technique;finite element model
Abstract: The goal of this work is to show the possibility of the identification of laminate beam specimens elastic properties with cross-ply laminae stacking sequences using prescribed eigenfrequencies. These frequencies are not determined experimentally in this paper but they are calculated numerically by means of the finite element (FE) software MSC.Marc. The composite material properties of the FE model based on Euler-Bernoulli theory have been subsequently tuned to correlate the determined frequencies in cross-ply laminate beams with the eigenfrequencies obtained by the software package. A real-coded genetic algorithm (GA) and a micro-genetic algorithm (μGA) are applied as the inverse technique for the identification problem. Because a small efficiency of the GAs in searching for Poisson’s ratio values was found, this parameter and the in-plane shear modulus have been estimated by using the law of mixtures. Some numerical examples are given to illustrate the proposed technique.
Rights: © 2011 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 5, number 2 (2011)
Články / Articles (KME)
Volume 5, number 2 (2011)

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