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Damage Prediction in Laminated Composites with Continuum Damage Mechanics

by David C. Lo, Texas A&M Univ, United States,
David H. Allen, Texas A&M Univ, United States,
Kevin D. Buie, Texas A&M Univ, United States,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

A finite element model is developed for laminated composite plates experiencing fatigue load induced microstructural damage. Continuum damage mechanics based constitutive relationships, in which the formation of damage with a laminated composite plate is modeled with strain-like internal state variables, are utilized to obtain the weak form of the equilibrium equation. A damage evolutionary relationship for matrix cracking is incorporated into the model to provide the capability to examine the response history of laminated plate structures. Finally, this model is implemented into a finite element computer code and is used to predict the response of a simple laminated plate structure loaded in fatigue.

Subject Headings: Laminated materials | Finite element method | Damage (material) | Plates | Composite materials | Fatigue (material) | Damage (structural)

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