Characterization and validation of the nonlinear viscoelastic-viscoplastic with hardening-relaxation constitutive relationship for asphalt mixtures

Autor:	Eyad Masad, Masoud K. Darabi, Dallas N. Little, Mohammad Bazzaz, Chien-Wei Huang
Rok vydání:	2019
Předmět:	Nonlinear system Materials science Viscoplasticity Asphalt Constitutive equation Hardening (metallurgy) General Materials Science Building and Construction Mechanics Viscoelasticity Civil and Structural Engineering Moduli
Zdroj:	Construction and Building Materials. 216:648-660
ISSN:	0950-0618
Popis:	This paper presents a systematic and straightforward analysis procedure to extract the material parameters associated with a coupled nonlinear viscoelastic (VE), viscoplastic (VP), and hardening-relaxation (HR) constitutive model for asphalt mixtures. The recoverable and irrecoverable strain are represented by Schapery nonlinear VE model and Perzyna-type VP theory, respectively. A HR model is proposed to consider the relaxation of hardening. Dynamic moduli and repeated creep-recovery tests are used to calibrate the coupled VE-VP-HR model. The model is then validated against independent experimental data. Results show that the VE-VP-HR model has the ability to capture the response of asphalt mixtures subjected to various loading paths.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8bed90f3f04ccbebabe62a6c95febcc1 https://doi.org/10.1016/j.conbuildmat.2019.04.239 Zobrazit plný text záznamu Full Text from ScienceDirect