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The virtual fields method with piecewise virtual fields

The virtual fields method with piecewise virtual fields
The virtual fields method with piecewise virtual fields
This paper deals with the identification of constitutive parameters of materials from whole-field strain data. The inverse identification procedure used is the virtual fields method. It is based on the principle of virtual work written with particular virtual fields. A keypoint of the method is the determination of the virtual fields since they directly extract the unknown parameters from the measured fields. The main improvement of the present paper is to show the feasibility of piecewise virtual fields. These piecewise virtual fields are defined by virtual nodal displacements. The headlines of the virtual fields method are recalled in the first part of the paper. The procedure leading to the definition of piecewise virtual fields is then described. Numerical simulations finally illustrate the relevance of the approach and its sensitivity to noisy data.

0020-7403
256-264
Toussaint, E.
2d6eb3c7-296d-4f16-aca8-a93f7ad404f0
Grediac, M.
76e6ce8e-aaec-4474-84ab-fe6802e93c86
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4
Toussaint, E.
2d6eb3c7-296d-4f16-aca8-a93f7ad404f0
Grediac, M.
76e6ce8e-aaec-4474-84ab-fe6802e93c86
Pierron, F.
a1fb4a70-6f34-4625-bc23-fcb6996b79b4

Toussaint, E., Grediac, M. and Pierron, F. (2006) The virtual fields method with piecewise virtual fields. International Journal of Mechanical Sciences, 48 (3), 256-264. (doi:10.1016/j.ijmecsci.2005.10.002).

Record type: Article

Abstract

This paper deals with the identification of constitutive parameters of materials from whole-field strain data. The inverse identification procedure used is the virtual fields method. It is based on the principle of virtual work written with particular virtual fields. A keypoint of the method is the determination of the virtual fields since they directly extract the unknown parameters from the measured fields. The main improvement of the present paper is to show the feasibility of piecewise virtual fields. These piecewise virtual fields are defined by virtual nodal displacements. The headlines of the virtual fields method are recalled in the first part of the paper. The procedure leading to the definition of piecewise virtual fields is then described. Numerical simulations finally illustrate the relevance of the approach and its sensitivity to noisy data.

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More information

Published date: 2006
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 210657
URI: http://eprints.soton.ac.uk/id/eprint/210657
ISSN: 0020-7403
PURE UUID: c2aefeae-222a-48a1-b74a-4ae23cc794b0
ORCID for F. Pierron: ORCID iD orcid.org/0000-0003-2813-4994

Catalogue record

Date deposited: 21 Feb 2012 11:57
Last modified: 15 Mar 2024 03:35

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Contributors

Author: E. Toussaint
Author: M. Grediac
Author: F. Pierron ORCID iD

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