Fracture and Structural Integrity e-ISSN 1971-8993 Open access
SI: Fracture and Structural integrity: ten years of F&IS Vol. 13, No. 47 (2019)

A numerical model based on ALE formulation to predict crack propagation in sandwich structures

Author and affiliation details
DOI
10.3221/IGF-ESIS.47.21
Pages
277-293
Published
Published inVol. 13, No. 47 (2019)Go to the issue

Abstract

A numerical model to predict crack propagation phenomena in sandwich structures is proposed. The model incorporates shear deformable beams to simulate high performance external skins and a 2D elastic domain to model the internal core. Crack propagation is predicted in both core and external skin-to-core interfaces by means of a numerical strategy based on an Arbitrary Lagrangian–Eulerian (ALE) formulation. Debonding phenomena are simulated by weak based connections, in which moving interfacial elements with damage constitutive laws are able to reproduce the crack evolution. Crack growth in the core is analyzed through a moving mesh approach, where a proper fracture criterion and mesh refitting procedure are introduced to predict crack tip front direction and displacement. The moving mesh technique, combined with a multilayer formulation, ensures a significant reduction of the computational costs. The accuracy of the proposed approach is verified through comparisons with experimental and numerical results. Simulations in a dynamic framework are developed to identify the influence of inertial effects on debonding phenomena arising when different core typologies are employed. Crack propagation in the core of sandwich structures is also analyzed on the basis of fracture parameters experimentally determined on commercially available foams.

Keywords

Article history

  1. ReceivedUntil the next stage: 30 days
  2. Revision requestedUntil the next stage: 10 days
  3. RevisedUntil the next stage: 1 day
  4. AcceptedUntil the next stage: 59 days
  5. Published

How to cite

APA

Funari, M. F., Greco, F., Lonetti, P., & Spadea, S. (2018). A numerical model based on ALE formulation to predict crack propagation in sandwich structures. Fracture and Structural Integrity, 13(47), 277–293. https://doi.org/10.3221/IGF-ESIS.47.21

IEEE

M. F. Funari, F. Greco, P. Lonetti, and S. Spadea, “A numerical model based on ALE formulation to predict crack propagation in sandwich structures,” Fracture and Structural Integrity, vol. 13, no. 47, pp. 277–293, 2018, doi: 10.3221/IGF-ESIS.47.21.

MLA

Funari, Marco Francesco, et al. “A numerical model based on ALE formulation to predict crack propagation in sandwich structures.” Fracture and Structural Integrity, vol. 13, no. 47, 2018, pp. 277–293. https://doi.org/10.3221/IGF-ESIS.47.21.

Chicago

Funari, Marco Francesco, Fabrizio Greco, Paolo Lonetti, and Saverio Spadea. 2018. “A numerical model based on ALE formulation to predict crack propagation in sandwich structures.” Fracture and Structural Integrity 13 (47): 277–293. https://doi.org/10.3221/IGF-ESIS.47.21.

Harvard

Funari, M.F., Greco, F., Lonetti, P. and Spadea, S. (2018) ‘A numerical model based on ALE formulation to predict crack propagation in sandwich structures’, Fracture and Structural Integrity, 13(47), pp. 277–293. doi: 10.3221/IGF-ESIS.47.21.

Vancouver

Funari MF, Greco F, Lonetti P, Spadea S. A numerical model based on ALE formulation to predict crack propagation in sandwich structures. Fracture and Structural Integrity. 2018;13(47):277-293. doi:10.3221/IGF-ESIS.47.21

BibTeX

@article{funari2018, author = {Funari, Marco Francesco and Greco, Fabrizio and Lonetti, Paolo and Spadea, Saverio}, title = {A numerical model based on ALE formulation to predict crack propagation in sandwich structures}, journal = {Fracture and Structural Integrity}, year = {2018}, volume = {13}, number = {47}, pages = {277--293}, doi = {10.3221/IGF-ESIS.47.21}, url = {https://doi.org/10.3221/IGF-ESIS.47.21}, issn = {1971-8993} }

RIS

TY - JOUR AU - Funari, Marco Francesco AU - Greco, Fabrizio AU - Lonetti, Paolo AU - Spadea, Saverio TI - A numerical model based on ALE formulation to predict crack propagation in sandwich structures JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2018 DA - 2018/12/03 VL - 13 IS - 47 SP - 277 EP - 293 DO - 10.3221/IGF-ESIS.47.21 UR - https://doi.org/10.3221/IGF-ESIS.47.21 SN - 1971-8993 ER -

Licence

Copyright © 2019 Marco F Funari, Fabrizio Greco, Paolo Lonetti, Saverio Spadea.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

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