Investigation of deformation behaviour of aluminium foam under high-strain rate loading and comparison with conventional energy absorbing material

0431562 - ÚTAM 2015 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Zlámal, P. - Fíla, Tomáš - Jiroušek, O. - Králík, V.
Investigation of deformation behaviour of aluminium foam under high-strain rate loading and comparison with conventional energy absorbing material.
Proceedings of XIIIth youth symposium on experimental solid mechanics. Praha: Czech Technical University in Prague, Faculty of Transportation Sciences, 2014 - (Kytýř, D.; Zlámal, P.; Růžička, M.), s. 145-150. ISBN 978-80-01-05556-4.
[Youth symposium on experimental solid mechanics /13./. Děčín (CZ), 29.06.2014-02.07.2014]
Grant CEP: GA ČR(CZ) GAP105/12/0824
Institucionální podpora: RVO:68378297
Klíčová slova: digital image correlation * impact test * polystyrene * metal foam
Kód oboru RIV: JI - Kompozitní materiály
http://www.itam.cas.cz/ysesm2014/proceedings/id_1_ysesm2014_proceedings.pdf

The aim of this study is proper description of stress-strain behaviour of the metal foam structure Alporas under high-strain rate loading. Stress-strain response of Alporas specimens is measured during an impact test using a drop tower experiment. Strain of the specimens is evaluated by two independent approaches: i) double numerical integration of acceleration data and ii) digital image correlation technique. Thus, experimental setup is equipped with triaxial accelerometer and high speed camera. Resulting stress-strain curves are compared with behaviour of polystyrene material samples (polystyrene material is commonly used as a shock absorber) obtained from the same testing procedure and with stress-strain function determined from Alporas quasi-static compression testing.
Trvalý link: http://hdl.handle.net/11104/0236176