Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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

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Author: search.filters.author.Aktay, LeventSubject: search.filters.subject.Energy absorption

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  • Article
    Citation - WoS: 14
    Citation - Scopus: 14
    Modeling the Progressive Axial Crushing of Foam-Filled Aluminum Tubes Using Smooth Particle Hydrodynamics and Coupled Finite Element Model/Smooth Particle Hydrodynamics
    (Elsevier Ltd., 2008) Aktay, Levent; Johnson, Alastair F.; Toksoy, Ahmet Kaan; Kröplin, Bernd Helmut; Güden, Mustafa
    As alternatives to the classical finite element model (FEM), a meshless smooth particle hydrodynamics (SPH) method, in which the discrete particles represent a solid domain, and a coupled FEM/SPH modeling technique were investigated for the numerical simulation of the quasi-static axial crushing of polystyrene foam-filled aluminum thin-walled aluminum tubes. The results of numerical simulations, load-deformation histories, fold lengths and specific absorbed energies, were found to show satisfactory correlations with those of experiments and FEM. The results further proved the capabilities of the SPH Method and coupled FEM/SPH modeling technique in predicting the crushing behavior of foam-filled thin-walled tubes.
  • 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.