CHARACTERIZATION OF STRAIN-INDUCED DAMAGE IN COMPOSITES BASED ON THE DISSIPATED ENERGY DENSITY .2. COMPOSITE SPECIMENS AND NAVAL STRUCTURES

Completed in Part I of this work are the description of the basic sche me and formulation by characterizing the damage behavior of composites by application of the dissipated energy density. Part II presents the development of a structural response simulator tool for composite str uctures subjected to different combinations of boundary displacements and loads. A presentation of distributions of dissipated energy densit y for the different load combinations on the specimens used in the In- Plane Loader (IPL) procedure described in Part I follows. Simulated re sponse for several structures of interest to the Navy is also presente d. They include a ship's mast and a cylindrical shell representing an idealized section of a submarine hull. Displayed are spatial maps of t he dissipated energy density (softening maps) for various loading ampl itudes. These softening maps reflect how energy is consumed by the dif ferent failure events within the structure.