Accession Number : ADA319549

Title :   Shock and Damage in Marine Composite Structures.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC MECHANICS AND MATERIALS BRANCH

Personal Author(s) : Dyka, C. T. ; Ingel, R. R.

PDF Url : ADA319549

Report Date : 31 DEC 1996

Pagination or Media Count : 45

Abstract : This report is a summary of our recent efforts here at NRL in developing a methodology for predicting the response of thick composite materials subjected to multidimensional shock loadings. A focus of this work has been the development of a 1D, 2D, and 3D evolving damage theory 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 to 2D composite plates impact experiments have been very encouraging. in this work, we assume a local material damage and effective resiting area perspective, in which the evolving damage is considered to be a vector quantity. The iD theory includes explicit dispersion/viscoelastic effects as well.

Descriptors :   *DAMAGE ASSESSMENT, *SHOCK(MECHANICS), *COMPOSITE STRUCTURES, *FAILURE(MECHANICS), TRANSIENTS, THICKNESS, DISPERSING, DAMAGE, QUANTITY, COMPOSITE MATERIALS, LOADS(FORCES), VISCOELASTICITY, VECTOR ANALYSIS, MARINE ENGINEERING, FLUID MECHANICS.

Subject Categories : Metallurgy and Metallography
      Mechanics
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE