A continuum thermo-inelastic model for damage and healing in self-healing glass materials

Journal Article · Tue Jul 08 04:00:00 EDT 2014 · International Journal of Plasticity, 62:1-16

DOI:https://doi.org/10.1016/j.ijplas.2014.06.011· OSTI ID:1149667

Xu, Wei; Sun, Xin; Koeppel, Brian J.; Zbib, Hussein M.

Self-healing glass, a recent advancement in the class of smart sealing materials, has attracted great attention from both research and industrial communities because of its unique capability of repairing itself at elevated temperatures. However, further development and optimization of this material rely on a more fundamental and thorough understanding of its essential thermo-mechanical response characteristics, which is also pivotal in predicting the coupling and interactions between the nonlinear stress and temperature dependent damage and healing behaviors. In the current study, a continuum three-dimensional thermo-inelastic damage-healing constitutive framework has been developed for the compliant self-healing glass material. The important feature of the present model is that various phenomena governing the mechanical degradation and recovery process, i.e. the nucleation, growth, and healing of the cracks and pores, are described with distinct mechanism-driven kinetics, where the healing constitutive relations are propagated from lower-length scale simulations. The proposed formulations are implemented into finite element analyses and the effects of various loading conditions and material properties on the material’s mechanical resistance are investigated.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1149667
• Report Number(s): PNNL-SA-100347; AA6040000
• Journal Information: International Journal of Plasticity, 62:1-16, Journal Name: International Journal of Plasticity, 62:1-16
• Country of Publication: United States
• Language: English