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Communication Dans Un Congrès Année : 2020

A new numerical scheme for the measurement of strain fields in cellular microstructures

Résumé

Full field measurements provided by digital volume correlation (DVC) would undoubtedly contribute to a better understanding of the mechanical behaviour of cellular materials. Nevertheless, when dealing with micro-structures that do not exhibit sufficient micro gray level gradients, traditional digital image correlation (DIC) algorithms lead to a rough spatial resolution that does not allow capturing local strains. In this critical situation, one effective method to increase spatial resolution while mastering measurement uncertainties is the use of mechanical regularization of the underlying optimization problem. Key-words: Digital Volume Correlation, elastic registration, B-splines, fictitious domain methods, image based models, cellular materials.
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Dates et versions

hal-02978110 , version 1 (26-10-2020)

Identifiants

  • HAL Id : hal-02978110 , version 1

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Ali Rouwane, Robin Bouclier, Jean-Charles Passieux, Jean-Noël Périé. A new numerical scheme for the measurement of strain fields in cellular microstructures. International Digital Image Correlation Society Virtual Conference 2020, Oct 2020, Virtual Conference, France. ⟨hal-02978110⟩
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