id: 02232905
dt: j
an: 02232905
au: Urbaski, Aleksander
ti: Homogenization of cellular geo-composites using modified finite element
    formulation.
so: Adv. Eng. Softw. 35, No. 10-11, 679-692 (2004).
py: 2004
pu: Elsevier Science Ltd., Oxford
la: EN
cc: 
ut: homogenization; finite elements; periodic composites; cellular
    geo-composites; membranes; contact
ci: 
li: doi:10.1016/j.advengsoft.2004.03.016
ab: Summary: The paper presents a finite element solution of a local
    homogenization problem applied to a cellular geo-composite. A modified
    finite element formulation of the micro-level analysis of a
    representative cell of the periodic composite is presented, which
    incorporates macro-deformation parameters (average strains) as
    additional degrees of freedom of the system. Besides continuum elements
    specialized finite elements such as membranes and interfaces used at
    the micro-level are also put into the unified framework of the
    homogenization analysis.In the given formulation of the homogenization
    problem, material nonlinearities of the composite components and
    interfaces can be taken into account.Two modeling options of the
    cellular geo-composite are investigated: simplified two-dimensional
    (generalized plane strain) and full 3D. Exemplary results representing
    numerically created path in macro-stress/strain space, stiffness
    module, as well as deformation and stress decomposition within
    micro-structure are shown.
rv: