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Modelling and testing of 3D printed cellular structures under quasi-static and dynamic conditions
Abstract A procedure for characterizing the deformation process of regular cellular structures fabricated with Fused Deposition Modelling of ABSplus material is presented. Two different topologies with similar relative densities were experimentally compressed for five different deformation velocities: quasi static (1.0; 5.0 and 10.0 mm/s) and dynamic (1520.0 mm/s and 2400.0 mm/s). In addition, both topologies were compared in the case of energy absorption capabilities. Firstly, however, the mechanical properties of the 3D printed material samples were evaluated and numerically correlated with the experimental data different strain rates. For this purpose, an elasto-visco-plastic constitutive model was selected and the Cowper-Symonds hardening parameters were determined using the MATLAB authorial script, which finally resulted in a good agreement between the experimental and numerical outcomes for all the considered loading conditions.
Highlights Two different cellular structures are manufactured with FDM from ABSplus. Quasi-static and dynamic mechanical properties of the printed ABSplus material are determined. Cowper-Symonds hardening parameters are determined using Matlab authorial script. Quasi-static and dynamic crashworthiness properties of the structures are assessed during FEA and experimental testing.
Modelling and testing of 3D printed cellular structures under quasi-static and dynamic conditions
Abstract A procedure for characterizing the deformation process of regular cellular structures fabricated with Fused Deposition Modelling of ABSplus material is presented. Two different topologies with similar relative densities were experimentally compressed for five different deformation velocities: quasi static (1.0; 5.0 and 10.0 mm/s) and dynamic (1520.0 mm/s and 2400.0 mm/s). In addition, both topologies were compared in the case of energy absorption capabilities. Firstly, however, the mechanical properties of the 3D printed material samples were evaluated and numerically correlated with the experimental data different strain rates. For this purpose, an elasto-visco-plastic constitutive model was selected and the Cowper-Symonds hardening parameters were determined using the MATLAB authorial script, which finally resulted in a good agreement between the experimental and numerical outcomes for all the considered loading conditions.
Highlights Two different cellular structures are manufactured with FDM from ABSplus. Quasi-static and dynamic mechanical properties of the printed ABSplus material are determined. Cowper-Symonds hardening parameters are determined using Matlab authorial script. Quasi-static and dynamic crashworthiness properties of the structures are assessed during FEA and experimental testing.
Modelling and testing of 3D printed cellular structures under quasi-static and dynamic conditions
Kucewicz, Michał (author) / Baranowski, Paweł (author) / Stankiewicz, Michał (author) / Konarzewski, Marcin (author) / Płatek, Paweł (author) / Małachowski, Jerzy (author)
Thin-Walled Structures ; 145
2019-08-30
Article (Journal)
Electronic Resource
English
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