A Multiscale Progressive Damage and Failure Modeling Approach For Laminated Fiber Reinforced Composites

Abstract

Design optimization of composite structures is limited by the predictive capabilities of current progressive damage and failure analysis methods. In order to increase the robustness of these prediction methods, a distinction between damage and failure should be established. Damage is a highly distributed phenomenon, such as microscopic void growth, that leads to a gradual reduction in (not complete absence of) load carrying capability. Failure, though, is a more localized phenomenon representing the end of damage growth and the complete loss of integrity of the material in the failed region. By considering both progressive damage and localized failure, the response of a carbon fiber laminated composite structure may be more accurately characterized.