Citation

Santosa S, Wierzbicki T. Int. J. Crashworthiness 1999; 4(2): 175-198.

Copyright

(Copyright © 1999, Informa - Taylor and Francis Group)

DOI

unavailable

PMID

unavailable

Abstract

A new concept of a double-walled sandwich column undergoing axial crushing is studied. The column is composed of a lightweight core material, such as aluminum honeycomb or foam, sandwiched between outer and inner shells. Numerical analysis using non-linear dynamic finite element code is carried out for various core heights and crushing strengths. It is found that during progressive crushing, the core-face plate debonding is localized only at the comer portion of the column, and high crushing resistance is still obtained. For the same total column weight, the double-walled sandwich column gives a much higher crushing resistance compared to the single wall column. A 40 - 60 % weight saving can be achieved by using aluminum honeycomb core, while 30 - 45 % weight saving can be achieved by using aluminum foam core. It is proved that the double-walled sandwich column is an attractive structural element for weight efficient crashworthy design.

Language: en