Characterization of composite plates using the virtual fields method with optimized loading conditions

Kashif, Syed Muhammad and Toussaint, Evelyne and Gre´diac, M. and Avril, Ste´phane and Kim, J. H. (2008) Characterization of composite plates using the virtual fields method with optimized loading conditions. Composite Structures, 85 (1). pp. 70-82. ISSN 02638223

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Abstract

This paper deals with the direct identification of bending stiffnesses of thin homogeneous anisotropic plates. The idea is to determine the unknown parameters from a single test giving a unique heterogeneous strain field. For the purpose of identification, the virtual fields method (VFM) is used. Here, the VFM is used taking into account two very recent developments: the piecewise construction of virtual fields and the noise minimization effect. Using these new aspects, improvements in terms of result accuracy are shown in comparison to previous studies. These new aspects are used as a tool to grade and to optimize different testing configurations with respect to the location of the applied loading. Some preliminary experimental results are then presented. They are in good agreement with theoretical expectations found in the first part of the study. Keywords: Virtual fields method; Inverse problem; Minimization of noise effect; Optimized testing configuration; Flexure rigidities; Anisotropic composite materials

Item Type:	Article (Journal)
Additional Information:	6377/6736
Uncontrolled Keywords:	Virtual fields method; Inverse problem; Minimization of noise effect; Optimized testing configuration; Flexure rigidities; Anisotropic composite materials
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA630 Structural engineering (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr Syed Muhammad Kashif .
Date Deposited:	03 Jan 2013 11:30
Last Modified:	03 Jan 2013 11:30
URI:	http://irep.iium.edu.my/id/eprint/6736

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