J. Phys. IV France 110 (2003) 441
A study of cellular structures under impact loadingS. Abdennadher1, H. Zhao1 and R. Othman2
1 LMT, ENS-Cachan/ CNRS, Université Paris 6, 61 avenue du Président Wilson, 94235 Cachan cedex, France
2 LMS, École Polytechnique, 91120 Palaiseau cedex, France
This paper presents the effect of inertia of cellular structures under impact loading. Experimental results under static and dynamic loading will be presented for square tubes made of a rate quasi-insensitive material (brass), the dynamic results being obtained using modified split Hopkinson pressure bar technique. The numeric simulation under Ls-dyna of those tests giving similar results will be also presented. Presented experimental, numeric results show that the inertia effect is a dominant factor responsible for the enhancement of crushing strength of cellular structures.
© EDP Sciences 2003