Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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  • Article
    Citation - WoS: 53
    Citation - Scopus: 56
    Finite Element and Coupled Finite Element/Smooth Particle Hydrodynamics Modeling of the Quasi-Static Crushing of Empty and Foam-Filled Single, Bitubular and Constraint Hexagonal- and Square-Packed Aluminum Tubes
    (Elsevier Ltd., 2008) Aktay, Levent; Kröplin, Bernd Helmut; Toksoy, Ahmet Kaan; Güden, Mustafa
    The quasi-static axial crushing behavior of empty and Al and polystyrene foam-filled Al single, bitubular and multi-tube-packed (hexagonal and square packing) configurations were investigated experimentally and numerically. Tubes were modeled using finite element and coupled finite element/smooth particle hydrodynamics. The numerical specific absorbed energy (SAE) values, deformation patterns, load values and number of folds formed were found to show agreements with those of experiments. Among the tested tube configurations only hexagonal- and square-packed empty tube designs showed increased SAE values over that of single empty tube. Furthermore, foam-filled multi-tube designs both hexagonal- and square-packed designs were found energetically more efficient than Al foam-filled single tubes at similar foam filler densities. The increased SAE values of multi-tubes were attributed to the frictional forces of the multi-tube designs and constraining effect of the die walls accommodating the tubes.
  • Article
    Citation - WoS: 44
    Citation - Scopus: 47
    Effect of Aluminum Closed-Cell Foam Filling on the Quasi-Static Axial Crush Performance of Glass Fiber Reinforced Polyester Composite and Aluminum/Composite Hybrid Tubes
    (Elsevier Ltd., 2007) Güden, Mustafa; Yüksel, Sinan; Taşdemirci, Alper; Tanoğlu, Metin
    The effect of Al closed-cell foam filling on the quasi-static crushing behavior of an E-glass woven fabric polyester composite tube and thin-walled Al/polyester composite hybrid tube was experimentally investigated. For comparison, empty Al, empty composite and empty hybrid tubes were also tested. Empty composite and empty hybrid tubes crushed predominantly in progressive crushing mode, without applying any triggering mechanism. Foam filling was found to be ineffective in increasing the crushing loads of the composite tubes over the sum of the crushing loads of empty composite tube and foam. However, foam filling stabilized the composite progressive crushing mode. In empty hybrid tubes, the deformation mode of the inner Al tube was found to be a more complex form of the diamond mode of deformation of empty Al tube, leading to higher crushing load values than the sum of the crushing load values of empty composite tube and empty metal tube. The foam filling of hybrid tubes however resulted in axial splitting of the outer composite tube due to the resistance imposed by the foam filler to Al tube inward folding and hence it was ineffective in increasing crushing load and SAE values over those of empty hybrid tubes.