TY - JOUR
T1 - Application of column buckling theory to steel aluminium foam sandwich panels
AU - Vidwans, Aditya
AU - Trovalusci, Patrizia
AU - Fantuzzi, Nicholas
AU - Correia, José A.F.O.
PY - 2023
Y1 - 2023
N2 - In steel structures, a lot of attention is paid to lightweight structures, i.e. reduction of dead load without compromising structural safety, integrity and performance. Thanks to modern steel aluminium foam sandwich panel manufacturing technology a new possibility became available for lightweight structural design. Assessment and understanding of the behaviour of this sandwich panel under in-plane compression or flexure is crucial before its application in steel structures. Column buckling theory is considered and applied to the steel aluminium foam sandwich panel to evaluate its behaviour under in-plane compressive load. In this work, various assumptions are made to generalise Euler's buckling formula. The generalisation requires modification of the buckling stiffness expression to account for sandwich panel composite properties. The modified analytical expression is verified with finite element simulation employing various material models specific to steel face-plates and aluminium foam as well as various geometric imperfections. Based on this study, it can be concluded that Euler's buckling formula can be successfully modified and used in the prediction of the load-carrying capacity of a sandwich panel.
AB - In steel structures, a lot of attention is paid to lightweight structures, i.e. reduction of dead load without compromising structural safety, integrity and performance. Thanks to modern steel aluminium foam sandwich panel manufacturing technology a new possibility became available for lightweight structural design. Assessment and understanding of the behaviour of this sandwich panel under in-plane compression or flexure is crucial before its application in steel structures. Column buckling theory is considered and applied to the steel aluminium foam sandwich panel to evaluate its behaviour under in-plane compressive load. In this work, various assumptions are made to generalise Euler's buckling formula. The generalisation requires modification of the buckling stiffness expression to account for sandwich panel composite properties. The modified analytical expression is verified with finite element simulation employing various material models specific to steel face-plates and aluminium foam as well as various geometric imperfections. Based on this study, it can be concluded that Euler's buckling formula can be successfully modified and used in the prediction of the load-carrying capacity of a sandwich panel.
KW - Aluminium foam
KW - Buckling
KW - Sandwich
UR - http://www.scopus.com/inward/record.url?scp=85160010731&partnerID=8YFLogxK
U2 - 10.1016/j.istruc.2023.04.112
DO - 10.1016/j.istruc.2023.04.112
M3 - Article
AN - SCOPUS:85160010731
SN - 2352-0124
VL - 54
SP - 607
EP - 617
JO - Structures
JF - Structures
ER -