Elasto-Plastic Stress Analysis in Rotating Disks and Pressure Vessels Made of Functionally Graded Materials

AT Kalali, Saeid Hadidi Moud, B Hassani

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    14 Citations (Scopus)
    127 Downloads (Pure)

    Abstract

    A new elastio-plastic stress solution in axisymmetric problems (rotating disk, cylindrical and spherical vessel) is presented. The rotating disk (cylindrical and spherical vessel) was made of a ceramic/metal functionally graded material, i.e. a particle-reinforced composite. It was assumed that the material's plastic deformation follows an isotropic strain-hardening rule based on the von-Mises yield criterion. The mechanical properties of the graded material were modeled by the modified rule of mixtures. By assuming small strains, Hencky's stress-strain relation was used to obtain the governing differential equations for the plastic region. A numerical method for solving those differential equations was then proposed that enabled the prediction of stress state within the structure. Selected finite element results were also presented to establish supporting evidence for the validation of the proposed approach.
    Original languageEnglish
    Pages (from-to)819-834
    Number of pages16
    JournalLatin American Journal of Solids and Structures
    Volume13
    Issue number5
    Early online date17 Feb 2016
    DOIs
    Publication statusPublished - 2016

    Keywords

    • Rotating disk
    • pressure vessel
    • elastic-plastic analysis
    • functionally graded material

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