Author(s)

L. Abah, A. Limam & M. Dejeammes

Abstract

The effects of holes or cutouts on dynamic and static axial crushing of straight thin-walled aluminium extrusions are experimentally studied. Cutouts are introduced along the tube generator, in order to decrease the first peak load on the load-displacement characteristic and control the collapse mode. A comparison between static tests results and dynamic ones is done. Numerical simulations with the explicit finite element code PAM-CRASH are conducted to confirm experiments results. 1 Introduction The collapse of tubes or cylindrical shells under axial load is an important subject from the safety point of view, particularly in the design of energy absorbing devices. The optimization of the performance of any impact energy absorption device must

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