Multiscale Modeling of Non-crystalline Ceramics (Glass) (FY11)
Abstract
This second-year progress report describes an ongoing program on the multiscale modeling of noncrystalline ceramics (glass) funded from the Director s Strategic Initiatives (DSIs) in support of the U.S. Army Research Laboratory s (ARL) Strategic Research Initiatives. The long-term research goal of the program is to develop a concurrent multiscale computational finite element code for optimizing or enhancing the performance of various glasses against shaped-charge jets; the initial work focuses on pure fused-silica (a-SiO2), and chemically varied a-SiO2 materials. As such, this objective falls squarely within the purview of the Weapons and Materials Research Directorate, since multiscale models are constitutive models (specific to a particular material) wherein time evolving short and intermediate range atomic structure, order, and microcrack initiation and growth, are fully coupled to the macroscale, a phenomenon that cannot be modeled or accounted for using classical homogenization methods. A more immediate research objective is to understand why certain chemically substituted a-SiO2 materials exhibit enhanced performance in the defeat of shaped-charge jets and other ballistic threats.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2012
- Accession Number
- ADA570722
Entities
People
- Betsy M. Rice
- Brian E. Schuster
- George A. Gazonas
- Iskander G. Batyrev
- James W. McCauley
- N. S. Weingarten
- Parimal Patel
- Raymond A. Wildman
- Richard C. Becker
- Sergei Izvekov
Organizations
- United States Army Research Laboratory