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    A Yield Surface Approach to the Estimation of Notch Strains for Proportional and Nonproportional Cyclic Loading

    Source: Journal of Engineering Materials and Technology:;1994:;volume( 116 ):;issue: 002::page 173
    Author:
    M. E. Barkey
    ,
    D. F. Socie
    ,
    K. J. Hsia
    DOI: 10.1115/1.2904269
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: An analytical method is developed to estimate notch root strains in a notched bar of elastic-plastic, isotropic material subjected to proportional and nonproportional multiaxial nominal loading. The method uses anisotropic plasticity theory to define a structural yield surface in nominal stress space that incorporates both the isotropic material properties and the anisotropic geometry factors of the notch. Notch root plastic strain increments and anisotropic work-hardening effects are then related to this yield surface using standard methods of plasticity. Comparisons of the proposed method with previously published strain estimates using the finite element method for a notched shaft under proportional nominal bending and torsion, and with strain gage measurements of a circumferentially notched solid steel shaft subjected to a series of box-shaped nonproportional loading paths in tension-torsion nominal stress space are presented. The strain calculations agree well both qualitatively and quantitatively using an appropriate nominal load-notch plastic strain relationship, and are suitable for strain-life fatigue calculations.
    keyword(s): Plasticity , Fatigue , Steel , Measurement , Stress , Torsion , Finite element methods , Materials properties , Geometry , Strain gages , Tension AND Work hardening ,
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      A Yield Surface Approach to the Estimation of Notch Strains for Proportional and Nonproportional Cyclic Loading

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/113703
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    • Journal of Engineering Materials and Technology

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    contributor authorM. E. Barkey
    contributor authorD. F. Socie
    contributor authorK. J. Hsia
    date accessioned2017-05-08T23:44:26Z
    date available2017-05-08T23:44:26Z
    date copyrightApril, 1994
    date issued1994
    identifier issn0094-4289
    identifier otherJEMTA8-26963#173_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/113703
    description abstractAn analytical method is developed to estimate notch root strains in a notched bar of elastic-plastic, isotropic material subjected to proportional and nonproportional multiaxial nominal loading. The method uses anisotropic plasticity theory to define a structural yield surface in nominal stress space that incorporates both the isotropic material properties and the anisotropic geometry factors of the notch. Notch root plastic strain increments and anisotropic work-hardening effects are then related to this yield surface using standard methods of plasticity. Comparisons of the proposed method with previously published strain estimates using the finite element method for a notched shaft under proportional nominal bending and torsion, and with strain gage measurements of a circumferentially notched solid steel shaft subjected to a series of box-shaped nonproportional loading paths in tension-torsion nominal stress space are presented. The strain calculations agree well both qualitatively and quantitatively using an appropriate nominal load-notch plastic strain relationship, and are suitable for strain-life fatigue calculations.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleA Yield Surface Approach to the Estimation of Notch Strains for Proportional and Nonproportional Cyclic Loading
    typeJournal Paper
    journal volume116
    journal issue2
    journal titleJournal of Engineering Materials and Technology
    identifier doi10.1115/1.2904269
    journal fristpage173
    journal lastpage180
    identifier eissn1528-8889
    keywordsPlasticity
    keywordsFatigue
    keywordsSteel
    keywordsMeasurement
    keywordsStress
    keywordsTorsion
    keywordsFinite element methods
    keywordsMaterials properties
    keywordsGeometry
    keywordsStrain gages
    keywordsTension AND Work hardening
    treeJournal of Engineering Materials and Technology:;1994:;volume( 116 ):;issue: 002
    contenttypeFulltext
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