Modelling impact damage in composite laminates: A simulation of intra- and inter-laminar cracking

  • Pinna, Christophe
  • Soutis, Constantinos
  • Shi, Yu
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Publication date
January 2020
Publisher
Elsevier BV
Journal
Composite Structures

Abstract

In this work, stress- and fracture mechanics-based criteria are developed to predict initiation and evolution, respectively, of intra- and inter-laminar cracking developed in composite laminates subjected to a relatively low energy impact (⩽15 J) with consideration of nonlinear shear behaviour. The damage model was implemented in the finite element (FE) code (Abaqus/Explicit) through a user-defined material subroutine (VUMAT). Delamination (or inter-laminar cracking) was modelled using interface cohesive elements while splitting and transverse matrix cracks (intralaminar cracking) that appeared within individual plies were also simulated by inserting cohesive elements along the fibre direction (at a crack spacing determined from experiments...

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