Efficient modelling and optimisation of hybrid multilayered plates subject to ballistic impact

M. Yong, L. Iannucci, B.G. Falzon

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Among the key challenges present in the modelling and optimisation of composite structures against impact is the computational expense involved in setting up accurate simulations of the impact event and then performing the iterations required to optimise the designs. It is of more interest to find good designs given the limitations of the resources and time available rather than the best possible design. In this paper, low cost but sufficiently accurate finite element (FE) models were generated in LS Dyna for several experimentally characterised materials by semi-automating the modelling process and using existing material models. These models were then used by an optimisation algorithm to generate new hybrid offspring, leading to minimum weight and/or cost designs from a selection of isotropic metals, polymers and orthotropic fibre-reinforced laminates that countered a specified impact threat. Experimental validation of the optimal designs thus identified was then successfully carried out using a single stage gas gun. With sufficient computational hardware, the techniques developed in this pilot study can further utilise fine meshes, equations of state and sophisticated material models, so that optimal hybrid systems can be identified from a wide range of materials, designs and threats.
Original languageEnglish
Pages (from-to)605-624
Number of pages20
JournalInternational Journal of Impact Engineering
Volume37
Issue number6
Early online date15 Jul 2009
DOIs
Publication statusPublished - Jun 2010

ASJC Scopus subject areas

  • Aerospace Engineering
  • Automotive Engineering
  • Civil and Structural Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Ocean Engineering
  • Safety, Risk, Reliability and Quality

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