A method for predicting the stress distribution in ductile matrix composite under cyclic loading

Souta Kimura, Jun Koyanagi, Takayuki Hama, Hiroyuki Kawada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    A shear-lag model is developed to predict the stress distributions in and around an isolated fibre in single-fibre polymer matrix composite (PMC) subjected to uniaxial tensile loading and unloading along the fibre direction. The matrix is assumed to be an elasto-plastic material that deforms according to J2 flow theory. The stress distributions are obtained numerically and compared with a different shear-lag model that employs total strain theory as a constitutive equation of the matrix material. An effect of the difference between the models on the derived stress state is discussed. Axisymmetric FEM is also conducted to validate the stress states obtained from the present analysis. It proves to be in good agreement with the FEM, which illustrates the importance of application of the incremental analysis.

    Original languageEnglish
    Title of host publicationICCM International Conferences on Composite Materials
    Publication statusPublished - 2007
    Event16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace" - Kyoto
    Duration: 2007 Jul 82007 Jul 13

    Other

    Other16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"
    CityKyoto
    Period07/7/807/7/13

    Fingerprint

    Stress concentration
    Fibers
    Composite materials
    Finite element method
    Polymer matrix composites
    Constitutive equations
    Unloading
    Plastics
    Direction compound

    Keywords

    • Elasto-plastic shear-lag analysis and FEM
    • Polymer matrix composite

    ASJC Scopus subject areas

    • Engineering(all)
    • Ceramics and Composites

    Cite this

    Kimura, S., Koyanagi, J., Hama, T., & Kawada, H. (2007). A method for predicting the stress distribution in ductile matrix composite under cyclic loading. In ICCM International Conferences on Composite Materials

    A method for predicting the stress distribution in ductile matrix composite under cyclic loading. / Kimura, Souta; Koyanagi, Jun; Hama, Takayuki; Kawada, Hiroyuki.

    ICCM International Conferences on Composite Materials. 2007.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Kimura, S, Koyanagi, J, Hama, T & Kawada, H 2007, A method for predicting the stress distribution in ductile matrix composite under cyclic loading. in ICCM International Conferences on Composite Materials. 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace", Kyoto, 07/7/8.
    Kimura S, Koyanagi J, Hama T, Kawada H. A method for predicting the stress distribution in ductile matrix composite under cyclic loading. In ICCM International Conferences on Composite Materials. 2007
    Kimura, Souta ; Koyanagi, Jun ; Hama, Takayuki ; Kawada, Hiroyuki. / A method for predicting the stress distribution in ductile matrix composite under cyclic loading. ICCM International Conferences on Composite Materials. 2007.
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    AB - A shear-lag model is developed to predict the stress distributions in and around an isolated fibre in single-fibre polymer matrix composite (PMC) subjected to uniaxial tensile loading and unloading along the fibre direction. The matrix is assumed to be an elasto-plastic material that deforms according to J2 flow theory. The stress distributions are obtained numerically and compared with a different shear-lag model that employs total strain theory as a constitutive equation of the matrix material. An effect of the difference between the models on the derived stress state is discussed. Axisymmetric FEM is also conducted to validate the stress states obtained from the present analysis. It proves to be in good agreement with the FEM, which illustrates the importance of application of the incremental analysis.

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