Incorporating strain gradient effects in a multiscale constitutive framework for nickel-base superalloys

Tiedo Tinga, W.A.M. Brekelmans, M.G.D. Geers

    Research output: Contribution to journalArticleAcademic

    23 Citations (Scopus)

    Abstract

    An efficient multiscale constitutive framework for nickel-base superalloys is proposed that enables the incorporation of strain gradient effects. Special interface regions in the unit cell contain the plastic strain gradients that govern the development of internal stresses. The model is shown to accurately simulate the experimentally observed size effects in the commercial alloy CMSX-4. The limited complexity of the proposed unit cell and the micromechanical simplifications make the framework particularly efficient in a multiscale approach. This is demonstrated by applying the model in a gas turbine blade finite element analysis
    Original languageEnglish
    Pages (from-to)3793-3825
    Number of pages34
    JournalPhilosophical Magazine
    Volume88
    Issue number30-32
    DOIs
    Publication statusPublished - 2008

    Keywords

    • IR-84610

    Fingerprint Dive into the research topics of 'Incorporating strain gradient effects in a multiscale constitutive framework for nickel-base superalloys'. Together they form a unique fingerprint.

  • Cite this