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Modified schapery's model for asphalt sand / Ye, Yong in Journal of engineering mechanics, Vol. 136 N° 4 (Avril 2010) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 136 N° 4 (Avril 2010) . - pp. 448-454 Titre : Modified schapery's model for asphalt sand Type de document : texte imprimé Auteurs : Ye, Yong, Auteur ; Yang, Xinhua, Auteur ; Chen, Chuanyao, Auteur Article en page(s) : pp. 448-454 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Asphalts  Sand  material  Viscoelasticity  Elastoplasticity  Nonlinearity  Nonlinear  response  Models. Résumé : Asphalt sand is described as a viscoelastoplastic materials. To involve elastic, viscoelastic, and viscoplastic strain components, a modified Schapery's model is proposed through adding a viscoplastic term to the Schapery's model with elastic and viscoelastic terms, and a strain-hardening model is used to describe viscoplastic behavior. A set of uniaxial compression tests, repeated and simple creep-recovery tests in different stress levels are performed to determine the stress-dependent parameters in the model. Finally, the model is validated by comparison with the results from the uniaxial creep experiments. Better agreement than the Schapery's model indicates that the modified model is practicable to describe the mechanical behavior of asphalt sand in uniaxial compression. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] [article] Modified schapery's model for asphalt sand [texte imprimé] / Ye, Yong, Auteur ; Yang, Xinhua, Auteur ; Chen, Chuanyao, Auteur . - pp. 448-454. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 136 N° 4 (Avril 2010) . - pp. 448-454 Mots-clés : Asphalts  Sand  material  Viscoelasticity  Elastoplasticity  Nonlinearity  Nonlinear  response  Models. Résumé : Asphalt sand is described as a viscoelastoplastic materials. To involve elastic, viscoelastic, and viscoplastic strain components, a modified Schapery's model is proposed through adding a viscoplastic term to the Schapery's model with elastic and viscoelastic terms, and a strain-hardening model is used to describe viscoplastic behavior. A set of uniaxial compression tests, repeated and simple creep-recovery tests in different stress levels are performed to determine the stress-dependent parameters in the model. Finally, the model is validated by comparison with the results from the uniaxial creep experiments. Better agreement than the Schapery's model indicates that the modified model is practicable to describe the mechanical behavior of asphalt sand in uniaxial compression. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...]