A domain coupling method for finite element digital image correlation with mechanical regularization: Application to multiscale measurements and parallel computing

Abstract : A general method is proposed to couple two sub-regions analysed with finite element digital image correlation (FE-DIC) even when using a mechanical regularization (R-DIC). A Lagrange multiplier is introduced to stitch both displacements fields in order to recover continuity over the full region of interest. Another interface unknown is introduced to ensure, additionally, the equilibrium of the mechanical models used for regularization. As a first application, the method is used to perform a single measurement from images at two different resolutions. Secondly, the method is also extended to parallel computing in R-DIC. The problem is formulated at the interface and solved with GMRes. A dedicated preconditioner is proposed to significantly accelerate convergence. The resulting method is a good candidate for the analysis of large data-sets. Copyright
Complete list of metadatas

Cited literature [44 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01577929
Contributor : Jean-Charles Passieux <>
Submitted on : Thursday, June 7, 2018 - 10:03:42 AM
Last modification on : Friday, October 11, 2019 - 8:22:58 PM
Long-term archiving on : Saturday, September 8, 2018 - 12:41:34 PM

File

2017-DDcoupling-rb_jcp.pdf
Files produced by the author(s)

Identifiers

Citation

Robin Bouclier, Jean-Charles Passieux. A domain coupling method for finite element digital image correlation with mechanical regularization: Application to multiscale measurements and parallel computing. International Journal for Numerical Methods in Engineering, Wiley, 2017, 111 (2), pp.123 - 143. ⟨10.1002/nme.5456⟩. ⟨hal-01577929⟩

Share

Metrics

Record views

214

Files downloads

198