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    Development of an Elastoviscoplastic Microstructural-Based Continuum Model to Predict Permanent Deformation in Hot Mix Asphalt

    Source: International Journal of Geomechanics:;2007:;Volume ( 007 ):;issue: 002
    Author:
    Eyad Masad
    ,
    Samer Dessouky
    ,
    Dallas Little
    DOI: 10.1061/(ASCE)1532-3641(2007)7:2(119)
    Publisher: American Society of Civil Engineers
    Abstract: Permanent deformation in hot mix asphalt is caused by a combination of densification (decrease in volume and hence increase in density) and shear deformation. The primary objective of this paper is to develop an elastoviscoplastic model that accounts for the influence of important microstructure properties such as anisotropy and damage on permanent deformation. The model incorporates a yield surface based on the Drucker-Prager function that is modified to capture the influence of stress state on the material response. Also, parameters that reflect the directional distribution of aggregates and damage density in the microstructure are included in this yield surface model. The elastoviscoplastic model is converted into a numerical formulation and is implemented in finite element (FE). The FE model is used in this study to simulate experimental measurements under different confining pressures and strain rates.
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      Development of an Elastoviscoplastic Microstructural-Based Continuum Model to Predict Permanent Deformation in Hot Mix Asphalt

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    http://yetl.yabesh.ir/yetl1/handle/yetl/55095
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    contributor authorEyad Masad
    contributor authorSamer Dessouky
    contributor authorDallas Little
    date accessioned2017-05-08T21:32:01Z
    date available2017-05-08T21:32:01Z
    date copyrightMarch 2007
    date issued2007
    identifier other%28asce%291532-3641%282007%297%3A2%28119%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/55095
    description abstractPermanent deformation in hot mix asphalt is caused by a combination of densification (decrease in volume and hence increase in density) and shear deformation. The primary objective of this paper is to develop an elastoviscoplastic model that accounts for the influence of important microstructure properties such as anisotropy and damage on permanent deformation. The model incorporates a yield surface based on the Drucker-Prager function that is modified to capture the influence of stress state on the material response. Also, parameters that reflect the directional distribution of aggregates and damage density in the microstructure are included in this yield surface model. The elastoviscoplastic model is converted into a numerical formulation and is implemented in finite element (FE). The FE model is used in this study to simulate experimental measurements under different confining pressures and strain rates.
    publisherAmerican Society of Civil Engineers
    titleDevelopment of an Elastoviscoplastic Microstructural-Based Continuum Model to Predict Permanent Deformation in Hot Mix Asphalt
    typeJournal Paper
    journal volume7
    journal issue2
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)1532-3641(2007)7:2(119)
    treeInternational Journal of Geomechanics:;2007:;Volume ( 007 ):;issue: 002
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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