Initiation and evolution of debonding phenomena in layered structures

Marco Franscesco Funari, Paolo Lonetti (Lead / Corresponding author)

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    A new methodology based on a moving mesh technique and a multilayer formulation is proposed with the purpose to predict crack onset, evolution and coalescence of the interlaminar damage mechanisms. In particular, a numerical approach based on Arbitrary Lagrangian Eulerian (ALE) formulation combined with shear-deformable beam elements is implemented in a numerical procedure based on the finite element method. The moving mesh technique combined with a multilayer formulation ensures a reduction of the computational costs, required to predict crack onset and subsequent evolution of the debonding phenomena. The analysis is performed with respect to several onset configurations, including the case in which multiple debonding mechanisms with coalescence affects the interfaces. The proposed approach is quite robust to be implemented also in dynamics, in which the process zone is known to advance at high speed ranges. In order to verify the proposed modeling, a sensitivity study in terms of convergence and stability of the solution is proposed. Moreover, comparisons with existing results available from the literature are developed with the purpose to verify the reliability and the consistency of the proposed formulation. © 2017 Elsevier Ltd
    Original languageEnglish
    Pages (from-to)133-145
    Number of pages13
    JournalTheoretical and Applied Fracture Mechanics
    Volume92
    Early online date29 May 2017
    DOIs
    Publication statusPublished - Dec 2017

    Fingerprint

    Debonding
    Coalescence
    Multilayers
    Cracks
    Moving Mesh
    formulations
    Formulation
    coalescing
    Multilayer
    mesh
    Crack
    cracks
    Verify
    Finite element method
    Predict
    Stability and Convergence
    Numerical Procedure
    Computational Cost
    Costs
    finite element method

    Keywords

    • ALE
    • Crack initiation
    • Debonding
    • Dynamic fracture mechanics
    • FEM
    • Cracks
    • Fracture mechanics
    • Mesh generation
    • Multilayers
    • Numerical methods
    • Shear deformation
    • Arbitrary Lagrangian Eulerian formulations
    • Convergence and stability
    • Moving mesh techniques
    • Numerical approaches
    • Numerical procedures
    • Sensitivity studies
    • Shear deformable beams
    • Finite element method

    Cite this

    Funari, Marco Franscesco ; Lonetti, Paolo. / Initiation and evolution of debonding phenomena in layered structures. In: Theoretical and Applied Fracture Mechanics. 2017 ; Vol. 92. pp. 133-145.
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    abstract = "A new methodology based on a moving mesh technique and a multilayer formulation is proposed with the purpose to predict crack onset, evolution and coalescence of the interlaminar damage mechanisms. In particular, a numerical approach based on Arbitrary Lagrangian Eulerian (ALE) formulation combined with shear-deformable beam elements is implemented in a numerical procedure based on the finite element method. The moving mesh technique combined with a multilayer formulation ensures a reduction of the computational costs, required to predict crack onset and subsequent evolution of the debonding phenomena. The analysis is performed with respect to several onset configurations, including the case in which multiple debonding mechanisms with coalescence affects the interfaces. The proposed approach is quite robust to be implemented also in dynamics, in which the process zone is known to advance at high speed ranges. In order to verify the proposed modeling, a sensitivity study in terms of convergence and stability of the solution is proposed. Moreover, comparisons with existing results available from the literature are developed with the purpose to verify the reliability and the consistency of the proposed formulation. {\circledC} 2017 Elsevier Ltd",
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    Initiation and evolution of debonding phenomena in layered structures. / Funari, Marco Franscesco; Lonetti, Paolo (Lead / Corresponding author).

    In: Theoretical and Applied Fracture Mechanics, Vol. 92, 12.2017, p. 133-145.

    Research output: Contribution to journalArticle

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