Počet záznamů: 1

An evaluation of the stress intensity factor in functionally graded materials

  1. 1.
    0338918 - UFM-A 2010 RIV CZ eng J - Článek v odborném periodiku
    Ševčík, Martin - Hutař, Pavel - Náhlík, Luboš - Knésl, Zdeněk
    An evaluation of the stress intensity factor in functionally graded materials.
    Applied and Computational Mechanics. Roč. 3, č. 2 (2009), s. 401-410 ISSN 1802-680X
    Grant CEP: GA ČR GD106/09/H035; GA ČR GC101/09/J027
    Výzkumný záměr: CEZ:AV0Z20410507
    Klíčová slova: functionally graded material * power-law material change
    Kód oboru RIV: JL - Únava materiálu a lomová mechanika

    Functionally graded materials (FGM) are characterised by variations in their material properties in terms of their geometry. They are often used as a coating for interfacial zones to protect the basic material against thermally or mechanically induced stresses. FGM can be also produced by technological process for example butt-welding of the polymer pipes. This work is focused on a numerical estimation of the stress intensity factor for cracks propa-gating through FGM structure. The philosophy of the FE model creation is focused on the discretization of mate-rial properties. The analysis of the FGM layer bonded from both sides with different homogenous materials has been performed to study the influence of the shape of the material property change. The thickness effect of the FGM layer is also discussed. In this pa-per, the above effects are quantified, and conclusions concerning the applicability of the proposed model are dis-cussed.
    Trvalý link: http://hdl.handle.net/11104/0182570