The dynamic response of inelastic, delaminated composite plates

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The dynamic behavior of metal matrix composite (MMC) plates is considered. In particular, the influence of inelastic deformations and delamination at the interfaces of the lamina on the macroscopic and local response of Al{sub 2}O{sub 3}/Al plates are studied. The work is carried out using a recently developed plate theory which models both delamination and localized history-dependent effects such, as inelasticity. A linear debonding model for the interface is employed for the current work. The theory models both the initiation and growth of delaminations without imposing any restrictions on the location, size, or direction of growth of the delamination. In … continued below

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10 p.

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Williams, T.O. & Addessio, F.L. April 1, 1997.

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Description

The dynamic behavior of metal matrix composite (MMC) plates is considered. In particular, the influence of inelastic deformations and delamination at the interfaces of the lamina on the macroscopic and local response of Al{sub 2}O{sub 3}/Al plates are studied. The work is carried out using a recently developed plate theory which models both delamination and localized history-dependent effects such, as inelasticity. A linear debonding model for the interface is employed for the current work. The theory models both the initiation and growth of delaminations without imposing any restrictions on the location, size, or direction of growth of the delamination. In the current work the response of the individual lamina in the plate are modeled using the Method of Cells (MOC) micromechanical model. The inelastic behavior in the matrix is modeled using the unified viscoplastic theory of Bodner and Partom. The behavior of a Al{sub 2}O{sub 3}/Al plate under dynamic cylindrical bending subjected to a ramp and hold type of loading is examined. For simplicity, the plate is assumed to be composed of a cross-ply layup. It is shown that both inelastic deformations and delamination have a strong influence on dynamic plate behavior. The inelastic deformations have strong effect on the axial displacement while delamination has greater influence on the deflection.

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10 p.

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OSTI as DE97004779

Medium: P; Size: 10 p.

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  • 11. international conference on composite materials, Gold Coast (Australia), 14-18 Jul 1997

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  • Other: DE97004779
  • Report No.: LA-UR--97-313
  • Report No.: CONF-970735--2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 486141
  • Archival Resource Key: ark:/67531/metadc685180

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Office of Scientific & Technical Information Technical Reports

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  • April 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • April 6, 2017, 7:11 p.m.

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Williams, T.O. & Addessio, F.L. The dynamic response of inelastic, delaminated composite plates, article, April 1, 1997; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc685180/: accessed May 7, 2021), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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