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

J. A. Nemes; P. W. Randles

doi:10.1016/0167-6636(94)90033-7

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

J. A. Nemes, P. W. Randles

Research output: Contribution to journal › Article › peer-review

10 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 language	English (US)
Pages (from-to)	1-14
Number of pages	14
Journal	Mechanics of Materials
Volume	19
Issue number	1
DOIs	https://doi.org/10.1016/0167-6636(94)90033-7
State	Published - Dec 1994

All Science Journal Classification (ASJC) codes

Materials Science(all)
Instrumentation
Mechanics of Materials

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10.1016/0167-6636(94)90033-7

Cite this

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title = "Constitutive modeling of high strain-rate deformation and spall fracture of graphite/peek composites",

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.",

author = "Nemes, {J. A.} and Randles, {P. W.}",

note = "Funding Information: The authors wish to acknowledge the support of the DARPA Naval Technology Office, in particular Mr. Jim Kelly and to acknowledge Dr. Robert Badaliance of the Naval Research Laboratory for support of the experimental work. Gratitude is also expressed to Mr. Larry Lee and Mr. Eric Smith of Ktech Corporation for performing the experiments and providing insight into their interpretation and to Mr. Kirth Sim-monds of the Naval Research Laboratory for performing the ultrasonic examination.",

year = "1994",

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AU - Nemes, J. A.

AU - Randles, P. W.

N1 - Funding Information: The authors wish to acknowledge the support of the DARPA Naval Technology Office, in particular Mr. Jim Kelly and to acknowledge Dr. Robert Badaliance of the Naval Research Laboratory for support of the experimental work. Gratitude is also expressed to Mr. Larry Lee and Mr. Eric Smith of Ktech Corporation for performing the experiments and providing insight into their interpretation and to Mr. Kirth Sim-monds of the Naval Research Laboratory for performing the ultrasonic examination.

PY - 1994/12

Y1 - 1994/12

N2 - 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.

AB - 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.

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

Abstract

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