Characterization and calibration of a viscoelastic simplified potential energy clock model for inorganic glasses
Abstract
In this study, to analyze the stresses and strains generated during the solidification of glass-forming materials, stress and volume relaxation must be predicted accurately. Although the modeling attributes required to depict physical aging in organic glassy thermosets strongly resemble the structural relaxation in inorganic glasses, the historical modeling approaches have been distinctly different. To determine whether a common constitutive framework can be applied to both classes of materials, the nonlinear viscoelastic simplified potential energy clock (SPEC) model, developed originally for glassy thermosets, was calibrated for the Schott 8061 inorganic glass and used to analyze a number of tests. A practical methodology for material characterization and model calibration is discussed, and the structural relaxation mechanism is interpreted in the context of SPEC model constitutive equations. SPEC predictions compared to inorganic glass data collected from thermal strain measurements and creep tests demonstrate the ability to achieve engineering accuracy and make the SPEC model feasible for engineering applications involving a much broader class of glassy materials.
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1236478
- Alternate Identifier(s):
- OSTI ID: 1396687
- Report Number(s):
- SAND-2015-4176J
Journal ID: ISSN 0022-3093; PII: S002230931530065X
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Non-Crystalline Solids
- Additional Journal Information:
- Journal Volume: 432; Journal Issue: PB; Journal ID: ISSN 0022-3093
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; glasses; viscoelasticity; relaxation; stresses; modeling; strains
Citation Formats
Chambers, Robert S., Tandon, Rajan, and Stavig, Mark E. Characterization and calibration of a viscoelastic simplified potential energy clock model for inorganic glasses. United States: N. p., 2015.
Web. doi:10.1016/j.jnoncrysol.2015.06.005.
Chambers, Robert S., Tandon, Rajan, & Stavig, Mark E. Characterization and calibration of a viscoelastic simplified potential energy clock model for inorganic glasses. United States. https://doi.org/10.1016/j.jnoncrysol.2015.06.005
Chambers, Robert S., Tandon, Rajan, and Stavig, Mark E. Tue .
"Characterization and calibration of a viscoelastic simplified potential energy clock model for inorganic glasses". United States. https://doi.org/10.1016/j.jnoncrysol.2015.06.005. https://www.osti.gov/servlets/purl/1236478.
@article{osti_1236478,
title = {Characterization and calibration of a viscoelastic simplified potential energy clock model for inorganic glasses},
author = {Chambers, Robert S. and Tandon, Rajan and Stavig, Mark E.},
abstractNote = {In this study, to analyze the stresses and strains generated during the solidification of glass-forming materials, stress and volume relaxation must be predicted accurately. Although the modeling attributes required to depict physical aging in organic glassy thermosets strongly resemble the structural relaxation in inorganic glasses, the historical modeling approaches have been distinctly different. To determine whether a common constitutive framework can be applied to both classes of materials, the nonlinear viscoelastic simplified potential energy clock (SPEC) model, developed originally for glassy thermosets, was calibrated for the Schott 8061 inorganic glass and used to analyze a number of tests. A practical methodology for material characterization and model calibration is discussed, and the structural relaxation mechanism is interpreted in the context of SPEC model constitutive equations. SPEC predictions compared to inorganic glass data collected from thermal strain measurements and creep tests demonstrate the ability to achieve engineering accuracy and make the SPEC model feasible for engineering applications involving a much broader class of glassy materials.},
doi = {10.1016/j.jnoncrysol.2015.06.005},
journal = {Journal of Non-Crystalline Solids},
number = PB,
volume = 432,
place = {United States},
year = {Tue Jul 07 00:00:00 EDT 2015},
month = {Tue Jul 07 00:00:00 EDT 2015}
}
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