[article]
| Titre : |
Modeling failure of bitumen films in tension |
| Type de document : |
texte imprimé |
| Auteurs : |
O. Portillo, Auteur ; D. Cebon, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
pp.1357–1371. |
| Note générale : |
Mécanique appliquée |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Bitumen films Cohesive modeling Fracture energy Finite-element method Viscous materials |
| Résumé : |
Finite-element analysis is used to model the failure of thin-film butt-joint specimens of pure bitumen in tension for a wide range of test conditions (temperature and strain rate). The approach uses a powerful numerical scheme based on two components: a nonlinear viscous, temperature- and rate-dependent constitutive material model that describes the mechanical deformation behavior of bitumen, implemented into a special-purpose finite-element user material subroutine, and a cohesive zone model for simulating the fracture process. The finite-element model is validated by comparing computed fracture characterization parameters with experimental results. The predicted force versus displacement characteristics and the normalized toughness, G/2h, are found to compare favorably with experimental results in the ductile and brittle regimes, with the failure mode being accurately simulated. |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000417 |
in Journal of engineering mechanics > Vol. 138 N° 11 (Novembre 2012) . - pp.1357–1371.
[article] Modeling failure of bitumen films in tension [texte imprimé] / O. Portillo, Auteur ; D. Cebon, Auteur . - 2013 . - pp.1357–1371. Mécanique appliquée Langues : Anglais ( eng) in Journal of engineering mechanics > Vol. 138 N° 11 (Novembre 2012) . - pp.1357–1371.
| Mots-clés : |
Bitumen films Cohesive modeling Fracture energy Finite-element method Viscous materials |
| Résumé : |
Finite-element analysis is used to model the failure of thin-film butt-joint specimens of pure bitumen in tension for a wide range of test conditions (temperature and strain rate). The approach uses a powerful numerical scheme based on two components: a nonlinear viscous, temperature- and rate-dependent constitutive material model that describes the mechanical deformation behavior of bitumen, implemented into a special-purpose finite-element user material subroutine, and a cohesive zone model for simulating the fracture process. The finite-element model is validated by comparing computed fracture characterization parameters with experimental results. The predicted force versus displacement characteristics and the normalized toughness, G/2h, are found to compare favorably with experimental results in the ductile and brittle regimes, with the failure mode being accurately simulated. |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000417 |
|
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