DAMAGE IN MARINE COMPOSITES CAUSED BY SHOCK LOADING

This paper is a summary of our recent efforts here at NRL in developin g a methodology for predicting the response of thick composite materia ls subjected to multidimensional shock loadings. A focus of this work has been the development of a 1D (one dimensional), 2D and 3D evolving damage model applicable to highly transient loading environments such as underwater shock and impact. This approach is phenomenological in nature and has achieved a degree of success. Comparisons with the resu lts of impact experiments on 2D composite plates have been encouraging . In this work, the assumption is made of a local material damage and effective resisting area perspective, in which the evolving damage is considered to be a vector quantity. The ID concept also includes expli cit dispersion/viscoelastic effects. Published by Elsevier Science Ltd .