CONTINUUM DAMAGE MODEL OF FATIGUE-INDUCED DAMAGE IN LAMINATED COMPOSITES.
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The writers have formulated a very promising model that predicts the stress-strain behavior of continuous fiber reinforced laminated composites in the presence of microstructural damage. The model is based on the concept of continuum damage mechanics and uses internal state variables to characterize the various damage modes. The associated internal state variable growth laws are mathematical models of the loading history induced development of microstructural damage. The damage model addresses both extension and bending and is developed in the form of modified laminate analysis equations for easy implementation. This model of the stress-strain behavior of laminates with fatigue-induced damage is the subject of this paper.