Citation

Markiewicz E, Ducrocq P, Drazetic P, Ravalard Y. Int. J. Crashworthiness 1996; 1(2): 203-224.

Copyright

(Copyright © 1996, Informa - Taylor and Francis Group)

DOI

unavailable

PMID

unavailable

Abstract

The objective of this paper is to calculate the instantaneous dynamic crushing force of complex prismatic sections. In the pre-collapse and collapse (peak load) phases, the effects of lateral inertia and strain rate are taken into account The different combinations of buckling modes (asymmetric or symmetric) and buckling behaviour (elastic or plastic) are treated by an energy approach in conjunction with a classical deformation model of an imperfect plate. Several experimental and FE numerical tests were carried out In all cases analytical results were in good agreement. It has been proved that a dynamically loaded plate can buckle plastically whereas the same plate, loaded statically, can buckle elastically. It was observed that effects of inertia are predominant in the case of elastic buckling whereas effects of strain rate are predominant in the case of plastic buckling.

Language: en