A Damage Evolution Model for Viscoelastic Composite Laminates

N. V. Akshantala; L. C. Brinson

doi:10.1520/ctr10907j

A Damage Evolution Model for Viscoelastic Composite Laminates

N. V. Akshantala^*, L. C. Brinson

^*Corresponding author for this work

Mechanical Engineering

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

11 Scopus citations

Abstract

A damage model for polymeric composite laminates operating at elevated temperatures is proposed. Viscoelastic behavior of the material is accounted for via the correspondence principle, and a variational approach is adopted to compute the temporal stresses within the laminate. Also, the effect of physical aging on ply level stress and on overall laminate behavior is included. An important feature of the model is that damage evolution predictions for viscoelastic laminates can be made. This allows us to track the mechanical response of the laminate up to large load levels, though within the confines of linear viscoelastic constitutive behavior.

Original language	English (US)
Pages (from-to)	3-14
Number of pages	12
Journal	Journal of Composites Technology and Research
Volume	23
Issue number	1
DOIs	https://doi.org/10.1520/ctr10907j
State	Published - Jan 2001

Keywords

Composite laminate
Correspondence principle
Damage evolution
Linear viscoelastic constitutive behavior
Physical aging
Polymeric
Temporal stress
Viscoelastic

ASJC Scopus subject areas

Ceramics and Composites
Polymers and Plastics
Materials Chemistry

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10.1520/ctr10907j

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abstract = "A damage model for polymeric composite laminates operating at elevated temperatures is proposed. Viscoelastic behavior of the material is accounted for via the correspondence principle, and a variational approach is adopted to compute the temporal stresses within the laminate. Also, the effect of physical aging on ply level stress and on overall laminate behavior is included. An important feature of the model is that damage evolution predictions for viscoelastic laminates can be made. This allows us to track the mechanical response of the laminate up to large load levels, though within the confines of linear viscoelastic constitutive behavior.",

keywords = "Composite laminate, Correspondence principle, Damage evolution, Linear viscoelastic constitutive behavior, Physical aging, Polymeric, Temporal stress, Viscoelastic",

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AB - A damage model for polymeric composite laminates operating at elevated temperatures is proposed. Viscoelastic behavior of the material is accounted for via the correspondence principle, and a variational approach is adopted to compute the temporal stresses within the laminate. Also, the effect of physical aging on ply level stress and on overall laminate behavior is included. An important feature of the model is that damage evolution predictions for viscoelastic laminates can be made. This allows us to track the mechanical response of the laminate up to large load levels, though within the confines of linear viscoelastic constitutive behavior.

KW - Composite laminate

KW - Correspondence principle

KW - Damage evolution

KW - Linear viscoelastic constitutive behavior

KW - Physical aging

KW - Polymeric

KW - Temporal stress

KW - Viscoelastic

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A Damage Evolution Model for Viscoelastic Composite Laminates

Abstract

Keywords

ASJC Scopus subject areas

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