Multiscale Phase-Field Modeling of Fracture in Nanostructures

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Mohsen Jahanshahi
  • Amir Reza Khoei
  • Niloofar Asadollahzadeh
  • Fadi Aldakheel

Externe Organisationen

  • McGill University
  • Sharif University of Technology
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer2350013
FachzeitschriftJournal of Multiscale Modelling
Jahrgang14
Ausgabenummer4
PublikationsstatusVeröffentlicht - 8 Feb. 2024

Abstract

The scientific community has witnessed, lately, a tremendous progress in the fabrication and synthesis of nanomaterials. As a result, it is essential to develop new and e±cient numerical techniques that are capable of modeling the behavior of materials at nanoscale with su±cient accuracy. In this work, a novel approach is presented for the multiscale analysis of brittle failure in nanostructures using the phase-field modeling. The specimen at microscale is discretized using finite elements (FEs), whose integration points lie in the representative volume elements (RVEs) at nanoscale. The displacement computed in upper scale for a microstructure that contains an evolving crack is imposed on the boundaries of the RVE in lower scale. On the other hand, the stresses and material properties obtained for the RVE in lower scale are transferred to upper scale to compute sti®ness matrices and load vectors. The evolution of the phase-field variable indicates the initiation and propagation of cracks at microscale. In order to avoid time-consuming molecular dynamics (MD) simulations at nanoscale in each step of the analysis, the Mooney–Rivlin material model is used to simulate the behavior of Aluminum (AL) nanostructure at this scale. The approach that is utilized to compute the material constants and the formulation for the multiscale technique combined with the phase-field modeling in upper scale are described in detail. It is discussed how the phase-field variable in microstructure is evolved based on the properties of the RVE in nanostructure. Many numerical examples are presented to demonstrate the application of the proposed multiscale technique in the solution of engineering problems.

ASJC Scopus Sachgebiete

Zitieren

Multiscale Phase-Field Modeling of Fracture in Nanostructures. / Jahanshahi, Mohsen; Khoei, Amir Reza; Asadollahzadeh, Niloofar et al.
in: Journal of Multiscale Modelling, Jahrgang 14, Nr. 4, 2350013, 08.02.2024.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Jahanshahi, M, Khoei, AR, Asadollahzadeh, N & Aldakheel, F 2024, 'Multiscale Phase-Field Modeling of Fracture in Nanostructures', Journal of Multiscale Modelling, Jg. 14, Nr. 4, 2350013. https://doi.org/10.1142/S1756973723500130
Jahanshahi, M., Khoei, A. R., Asadollahzadeh, N., & Aldakheel, F. (2024). Multiscale Phase-Field Modeling of Fracture in Nanostructures. Journal of Multiscale Modelling, 14(4), Artikel 2350013. https://doi.org/10.1142/S1756973723500130
Jahanshahi M, Khoei AR, Asadollahzadeh N, Aldakheel F. Multiscale Phase-Field Modeling of Fracture in Nanostructures. Journal of Multiscale Modelling. 2024 Feb 8;14(4):2350013. doi: 10.1142/S1756973723500130
Jahanshahi, Mohsen ; Khoei, Amir Reza ; Asadollahzadeh, Niloofar et al. / Multiscale Phase-Field Modeling of Fracture in Nanostructures. in: Journal of Multiscale Modelling. 2024 ; Jahrgang 14, Nr. 4.
Download
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AU - Khoei, Amir Reza

AU - Asadollahzadeh, Niloofar

AU - Aldakheel, Fadi

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