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Measuring orthotropic bending stiffness components of Pinus pinaster by the virtual fields method

Measuring orthotropic bending stiffness components of Pinus pinaster by the virtual fields method
Measuring orthotropic bending stiffness components of Pinus pinaster by the virtual fields method

Orthotropic stiffness components of Pinus pinaster Ait. wood are simultaneously determined by means of a heterogeneous plate bending test. The proposed inverse identification approach couples full-field slope measurements provided by deflectometry with the virtual fields methods. Wooden plates oriented in the longitudinal–radial and longitudinal–tangential material planes were manufactured. A procedure was implemented to allow suitable specular reflective coating of the wooden plates, required in the deflectometry technique. Reconstructed curvature fields, applied load and plate dimensions were input in virtual fields methods for material parameter identification, assuming Kirchhoff–Love classical plate theory. Several virtual fields and load cases were analysed to address the identifiability of the method. The values of the orthotropic elastic constants obtained from the proposed approach were found in good agreement with regard to reference ones for the same species and determined from classical tensile, compression and shear mechanical tests.

deflectometry, Kirchhoff–Love plate theory, plate bending tests, virtual fields method, Wood
0309-3247
1-10
Xavier, José
52ee47fa-06c1-415c-b7ff-b50175e5891e
Pierron, Fabrice
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Xavier, José
52ee47fa-06c1-415c-b7ff-b50175e5891e
Pierron, Fabrice
a1fb4a70-6f34-4625-bc23-fcb6996b79b4

Xavier, José and Pierron, Fabrice (2018) Measuring orthotropic bending stiffness components of Pinus pinaster by the virtual fields method. The Journal of Strain Analysis for Engineering Design, 1-10. (doi:10.1177/0309324718791087).

Record type: Article

Abstract

Orthotropic stiffness components of Pinus pinaster Ait. wood are simultaneously determined by means of a heterogeneous plate bending test. The proposed inverse identification approach couples full-field slope measurements provided by deflectometry with the virtual fields methods. Wooden plates oriented in the longitudinal–radial and longitudinal–tangential material planes were manufactured. A procedure was implemented to allow suitable specular reflective coating of the wooden plates, required in the deflectometry technique. Reconstructed curvature fields, applied load and plate dimensions were input in virtual fields methods for material parameter identification, assuming Kirchhoff–Love classical plate theory. Several virtual fields and load cases were analysed to address the identifiability of the method. The values of the orthotropic elastic constants obtained from the proposed approach were found in good agreement with regard to reference ones for the same species and determined from classical tensile, compression and shear mechanical tests.

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More information

Accepted/In Press date: 2 July 2018
e-pub ahead of print date: 30 July 2018
Keywords: deflectometry, Kirchhoff–Love plate theory, plate bending tests, virtual fields method, Wood

Identifiers

Local EPrints ID: 425776
URI: http://eprints.soton.ac.uk/id/eprint/425776
ISSN: 0309-3247
PURE UUID: 77976af6-aa50-4f44-a513-c870715ed125
ORCID for Fabrice Pierron: ORCID iD orcid.org/0000-0003-2813-4994

Catalogue record

Date deposited: 02 Nov 2018 17:30
Last modified: 20 Jul 2019 00:47

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Contributors

Author: José Xavier
Author: Fabrice Pierron ORCID iD

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