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  • Experimental and numerical modelling of open-cell cellular structures
    Vesenjak, Matej ...
    The paper describes the behaviour of regular open-cell cellular structures under dynamic compressive loading and the influence of the pore filler. Such materials, with their high energy absorption, ... are of particular importance as crash absorbers where impact energy is absorbed and dissipated. Open-cell cellular specimens made of aluminium alloy and polymer have been experimentally tested with aim to determine their stiffness, and for validation of the computational models. The quasi-static and dynamic compressive loading has been applied to the open-cell cellular structures in order to evaluate the strain rate sensitivity. Additionally, cellular specimens with filler material have been subjected to compressive loading. Thespecimens with the filler material have shown that the observed brittle behaviour at rupture has been reduced and the energy absorption increased (Fig. 2). Such structures are also very strain rate dependent as shown in Figure 2. Further investigations of the filler influence were carried out with extensive dynamic nonlinear computational simulations (Fig. 3). Computational results of the open-cell cellular structure have shown that the influence of the filler increases with increasing the relative density. The developed computational models provide for better understanding of behaviour of such materials and development of new approaches for design of open-cell cellular structures.
    Vir: Extended abstracts & proceedings of the 5th International congress of Croatian society of mechanics, Trogir, Croatia, September 21-23, 2006 [Elektronski vir] (p103 (8 str.))
    Vrsta gradiva - prispevek na konferenci
    Leto - 2006
    Jezik - angleški
    COBISS.SI-ID - 10684694

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