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

J. A. Nemes, P. W. Randles

Research output: Contribution to journalArticle

9 Citations (Scopus)

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

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Graphite
strain rate
Strain rate
graphite
damage
composite materials
Composite materials
Constitutive models
Delamination
Laminates
Ultrasonics
visual observation
impact velocity
laminates
ultrasonics
Experiments
histories
continuums
profiles

All Science Journal Classification (ASJC) codes

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

Cite this

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Constitutive modeling of high strain-rate deformation and spall fracture of graphite/peek composites. / Nemes, J. A.; Randles, P. W.

In: Mechanics of Materials, Vol. 19, No. 1, 12.1994, p. 1-14.

Research output: Contribution to journalArticle

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