Penetrator Resistance and Target Damage Due to Multiple Impacts upon Granite and Concrete: Joint Experimental, Analytical and Numerical Effoft
Abstract
The overall objective of the proposed research was to fundamentally and quantitatively understand, based on first physical principles, the micromechanics of penetration into and damage accumulation in cemented particulate targets subject to multiple impact. The approach was to integrate experiments, analytical micromechanics, and numerical modeling into a concerted effort. The project was to be conducted jointly with the University of Rhode Island. The Petrophysical Consulting part of the project was analytical micromechanics. To achieve this objective we provided an elastic description of completely cemented or partially cemented granular material where the elastic properties of the grains and cement differ from each other. This new solution gives a basis for investigating the plastic deformation and failure of cemented composite targets such as concrete and granite. We also analyzed natural rock materials using acoustic pulses and deriving the strength of such materials from their elastic moduli. These results are relevant to describing the strength and damage resistance of such target geomaterials as concrete and granite. The main relevance to the Air Force mission is through a quantitative description of elastic, non-elastic, and damage accumulation properties of cemented geomaterials subject to penetrator impact.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 23, 1998
- Accession Number
- ADA354563
Entities
People
- Jack Dvorkin