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Experimental Mechanics

Erschienen in:

01.01.2015

Estimation of Elastoplastic Parameters via Weighted FEMU and Integrated-DIC

verfasst von: F. Mathieu, H. Leclerc, F. Hild, S. Roux

Erschienen in: Experimental Mechanics | Ausgabe 1/2015

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Abstract

DIC-based identification of the constitutive parameters of an elastoplastic law is addressed both from a general viewpoint, and applied to the particular case of dog-bone sample made of commercially pure titanium and subjected to tensile loading. A two-step procedure (Digital Image Correlation — DIC — followed by weighted Finite Element Method Updating — FEMU) is first presented. These two steps can be merged into a single-step procedure (i.e., Integrated-DIC or I-DIC). In both cases, the elastoplastic computations are performed with a commercial code (i.e., non-intrusive identification). When the suited weighting of FEMU is taken into account, which is based on DIC-processed image noise, both I-DIC and FEMU methods provide similar results. It is shown that the addressed experimental case requires the use of static (load) information to get precise estimates of the sought parameters.

Vorheriger Artikel Application of Digital Image Correlation (DIC) in Dynamic Notched Semi-Circular Bend (NSCB) Tests

Nächster Artikel Multiscale Displacement Field Measurement Using Digital Image Correlation: Application to the Identification of Elastic Properties

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Titel: Estimation of Elastoplastic Parameters via Weighted FEMU and Integrated-DIC
verfasst von: F. Mathieu
H. Leclerc
F. Hild
S. Roux
Publikationsdatum: 01.01.2015
Verlag: Springer US
Erschienen in: Experimental Mechanics / Ausgabe 1/2015
Print ISSN: 0014-4851
Elektronische ISSN: 1741-2765
DOI: https://doi.org/10.1007/s11340-014-9888-9

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