NDLI: Molecular-level analysis of shock-wave physics and derivation of the Hugoniot relations for soda-lime glass

Content Provider	Springer Nature Link
Author	Grujicic, M. Pandurangan, B. Bell, W. C. Cheeseman, B. A. Patel, P. Gazonas, G. A.
Copyright Year	2011
Abstract	Non-equilibrium and equilibrium molecular dynamics simulations are employed to study the mechanical response of soda-lime glass (a material commonly used in transparent armor applications) when subjected to the loading conditions associated with the generation and propagation of planar shock waves. Particular attention is given to the identification and characterization of various (inelastic-deformation and energy-dissipation) molecular-level phenomena and processes taking place at the shock front. The results obtained revealed that the shock loading causes a 2–4% (shock strength-dependent) density increase. In addition, an increase in the average coordination number of the silicon atoms is observed along with the creation of smaller Si–O rings. These processes are associated with significant energy absorption and dissipation and are believed to control the blast/ballistic impact mitigation potential of soda-lime glass. This study was also aimed at the determination (via purely computational means) of the shock Hugoniot (i.e., a set of axial stress vs. density/specific-volume vs. internal energy vs. particle velocity vs. temperature) material states obtained in soda-lime glass after the passage of a shock wave of a given strength and on the comparison of the computed results with their experimental counterparts. The availability of a shock Hugoniot is critical for construction of a high deformation-rate, large-strain, high pressure material model which can be used within a continuum-level computational analysis to capture the response of a soda-lime glass-based laminated transparent armor structure (e.g., a military vehicle windshield, door window, etc.) to blast/ballistic impact loading.
Starting Page	7298
Ending Page	7312
Page Count	15
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	46
Issue Number	22
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2011-06-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Polymer Sciences Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials Mechanics Crystallography
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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