Constitutive modeling of high strain-rate deformation and spall fracture of graphite/peek composites

J. A. Nemes, P. W. Randles

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A constitutive model that describes the response of graphite/peek composite materials to high rate uniaxial deformation with resulting damage and spall fracture is presented. A nonlinear, rate-dependent description is used in conjunction with a continuum damage description of evolving delamination damage. Results of flyer plate impact experiments performed on 25 mm thick, transversely isotropic laminates are given. Comparison of measured rear-face particle velocity histories to those predicted by the theory show good agreement over a wide range of impact velocities. Computed damage profiles are compared to visual and ultrasonic observation of the post-impacted specimens.

Original languageEnglish (US)
Pages (from-to)1-14
Number of pages14
JournalMechanics of Materials
Volume19
Issue number1
DOIs
StatePublished - Dec 1994

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Instrumentation
  • Mechanics of Materials

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