Physics Based Damage Modeling of Laminated Composite Plates

摘要

The development of a comprehensive, physics-based, multiscale-modeling framework for analyzing the behavior of damaging, laminated composite plates is presented. The framework directly incorporates the response at three distinct characteristic length scales, namely, the plate thickness, the lamina/ply thickness, and the fiber diameter. The behaviors at the two highest length scales are modeled using a new multiscale plate theory. Nonlinear homogenization theories are used to model the response at the finest (fiber diameter) length scale. These physics-based models are assisting other aspects of a Los Alamos damage prognosis effort, including helping with the design of experiments, to define requisite sensing system properties, and to assist in the development of simplified or reduced order models that can be deployed in onboard sensing systems.