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    Elastoplastic Modeling of Metal Matrix Composites Containing Randomly Located and Oriented Spheroidal Particles

    Source: Journal of Applied Mechanics:;2004:;volume( 071 ):;issue: 006::page 774
    Author:
    L. Z. Sun
    ,
    J. W. Ju
    DOI: 10.1115/1.1794699
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Micromechanics-based effective elastic and plastic formulations of metal matrix composites (MMCs) containing randomly located and randomly oriented particles are developed. The averaging process over all orientations upon three elastic governing equations for aligned particle-reinforced MMCs is performed to obtain the explicit formulation of effective elastic stiffness of MMCs with randomly oriented particles. The effects of volume fraction of particles and particle shape on the overall elastic constants are studied. Comparisons with the Hashin-Shtrikman bounds and Ponte Castaneda-Willis bounds show that the present effective elastic formulation does not violate the variational bounds. Good agreement with experimental elastic stiffness data is also illustrated. Furthermore, the orientational averaging procedure is employed to derive the overall elastoplastic yield function for the MMCs. Elastoplastic constitutive relations for the composites are constructed on the basis of the derived composite yield function. The stress-strain responses of MMCs under the axisymmetric loading are also investigated in detail. Finally, elastoplastic comparisons with the experimental data for SiCp/Al composites are performed to illustrate the capability of the proposed formulation.
    keyword(s): Composite materials , Particulate matter , Metal matrix composites , Stress AND Stiffness ,
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      Elastoplastic Modeling of Metal Matrix Composites Containing Randomly Located and Oriented Spheroidal Particles

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/129424
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    contributor authorL. Z. Sun
    contributor authorJ. W. Ju
    date accessioned2017-05-09T00:11:58Z
    date available2017-05-09T00:11:58Z
    date copyrightNovember, 2004
    date issued2004
    identifier issn0021-8936
    identifier otherJAMCAV-26585#774_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/129424
    description abstractMicromechanics-based effective elastic and plastic formulations of metal matrix composites (MMCs) containing randomly located and randomly oriented particles are developed. The averaging process over all orientations upon three elastic governing equations for aligned particle-reinforced MMCs is performed to obtain the explicit formulation of effective elastic stiffness of MMCs with randomly oriented particles. The effects of volume fraction of particles and particle shape on the overall elastic constants are studied. Comparisons with the Hashin-Shtrikman bounds and Ponte Castaneda-Willis bounds show that the present effective elastic formulation does not violate the variational bounds. Good agreement with experimental elastic stiffness data is also illustrated. Furthermore, the orientational averaging procedure is employed to derive the overall elastoplastic yield function for the MMCs. Elastoplastic constitutive relations for the composites are constructed on the basis of the derived composite yield function. The stress-strain responses of MMCs under the axisymmetric loading are also investigated in detail. Finally, elastoplastic comparisons with the experimental data for SiCp/Al composites are performed to illustrate the capability of the proposed formulation.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleElastoplastic Modeling of Metal Matrix Composites Containing Randomly Located and Oriented Spheroidal Particles
    typeJournal Paper
    journal volume71
    journal issue6
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.1794699
    journal fristpage774
    journal lastpage785
    identifier eissn1528-9036
    keywordsComposite materials
    keywordsParticulate matter
    keywordsMetal matrix composites
    keywordsStress AND Stiffness
    treeJournal of Applied Mechanics:;2004:;volume( 071 ):;issue: 006
    contenttypeFulltext
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