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  • Anisotropic hardening of materials by non-shearable particles = Utrditev anizotropnih materialov z delci
    Bonfoh, Napo ; Tiem, Sonnou ; Lipinski, Paul
    A new description of the hardening of polycrystalline materials is proposed. This hardening is mainly induced by non-shearable particles. Anisotropic and kinematic hardening of this kind of material ... has been mentioned in a previous paper (Bonfoh et al., 2003). In contrast to this initial investigation, the proposed modified formulation introduces a non-linear hardening for the single crystal without particles and better renders the material behaviour at finite deformations. The micromechanical modelling is based on a two-level homogenization approach: a micro-mesoscopic transition is firstly performed to derive the equivalent behaviour of a single crystal containing a volume fraction of intra-crystalline particles. Then, a second transition to the macroscopic scale leads to the elastic-plastic behaviour of the polycrystalline material. The numerical results of the model are analysed in terms of the internal stress developed during plastic loading. The material behaviour, when subjected to a multiaxial loading, is also studied through the concept of the yield surface. Some other aspects, such as the influence of particles size, shape and volume fraction, are also investigated.
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 41, št. 2, mar.-apr. 2007, str. 77-80)
    Vrsta gradiva - članek, sestavni del
    Leto - 2007
    Jezik - angleški
    COBISS.SI-ID - 603050

    Povezava(-e):

    Digitalna knjižnica Slovenije - dLib.si

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 41, št. 2, mar.-apr. 2007, str. 77-80)

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