Influence of radiative heat transfer model on the computation of residual stresses in glass tempering process

During glass tempering, residual stresses are caused by the temperature gradient appearing between the surface and the core of the glass. It is therefore necessary to have an accurate knowledge of the heat transfer occurring during the process to obtain an accurate estimation of the residual stresse...

Full description

Saved in:
Bibliographic Details
Published in:International journal of applied glass science 2018-04, Vol.9 (2), p.235-251
Main Authors: Agboka, Kossiga, Béchet, Fabien, Siedow, Norbert, Lochegnies, Dominique
Format: Article
Language:English
Subjects:
Aluminum alloys
Approximation
Computation
Conductive heat transfer
Engineering Sciences
Fatigue life
glass tempering
Heat transfer
Knowledge management
Mathematical models
Mechanical properties
Mechanics
Radiative heat transfer
Ray tracing
Residual stress
residual stresses
Temperature gradients
Tempering
thermal radiation
Thermomechanical analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:During glass tempering, residual stresses are caused by the temperature gradient appearing between the surface and the core of the glass. It is therefore necessary to have an accurate knowledge of the heat transfer occurring during the process to obtain an accurate estimation of the residual stresses. Since glass is a semitransparent material, radiative heat transfer takes place inside the glass in addition to the conductive heat transfer. In this paper, we implemented 1‐D thermomechanical models using different methods for the computation of the radiative effects inside the glass: Rosseland approximation, P1 approximation and back ray tracing. Thermal and residual stresses results are compared to experimental results available in the literature to investigate the effects of the different methods on the heat transfer and mechanical behavior. We found that P1 approximation and back ray tracing are in good agreement with the experimental results. Finally, a numerical investigation is done by changing different parameters for which the experimental results are not available.
ISSN:2041-1286
2041-1294
DOI:10.1111/ijag.12335