Finite element modelling of Dyneema® composites: From quasi-static rates to ballistic impact

Mark Hazzard*, Richard Trask, Ulrich Heisserer, Mirre Van Der Kamp, Stephen Hallett

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

3 Citations (Scopus)
131 Downloads (Pure)

Abstract

A finite element methodology to predict the behaviour of Dyneema® HB26 fibre composites at quasi-static rates of deformation, under low velocity drop weight impact, and high velocity ballistic impact has been developed. A homogenised sub-laminate approach separated by cohesive tied contacts was employed. The modelling approach uses readily available material models within LS-DYNA, and is validated against experimental observations in literature. Plane-strain beam models provide accurate mechanisms of deformation, largely controlled through Mode II cohesive interface properties and kink band formation. Low velocity drop weight impact models of HB26 give force-deflection within 10% of new experimental observations, with in-plane shear strain contour plots from models directly compared with experimental Digital Image Correlation (DIC). Ballistic impact models utilising rate effects and damage showed similar modes of deformation and failure to that observed in literature, and provide a good approximation for ballistic limit under 600 m/s impact speed.
Original languageEnglish
Pages (from-to)31-45
Number of pages15
JournalComposites Part A: Applied Science and Manufacturing
Volume115
DOIs
Publication statusPublished - 1 Dec 2018

Keywords

  • Dyneema®
  • Finite element analysis (FEA)
  • Impact behaviour

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