Modelling the Response of Thick Composite Materials Due to Axisymmetric Shock Loading
Abstract
Preliminary efforts for developing a methodology to predict the response of thick composite materials to axisymmetric shock loading are presented. Consideration is given to material layups that result in transversely isotropic behavior in the plane of the fibers. The response of thick graphite/ epoxy composite plates subjected to underwater explosive loadings is solved numerically using a transient finite-element code. Both spherical and plane shock waves are considered. Results are compared to analytical results, where possible, along with computed results using steel as the plate material. A continuum damage model appropriate for thick composite materials subjected to high rate loading is developed to consider the response of the composite materials in the nonlinear range. The model considers two different damage parameters, one to represent delamination type cracks and the other to represent matrix cracking. The model is applied initially for different types of homogeneous deformation and then applied to the response of the composite plate subjected to the underwater explosive loading.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 05, 1991
- Accession Number
- ADA239531
Entities
People
- J. A. Nemes
- P. W. Randles
Organizations
- United States Naval Research Laboratory