A. Ajdari, H. Nayeb-hashemi, and A. Vaziri, Dynamic crushing and energy absorption of regular, irregular and functionally graded cellular structures, International Journal of Solids and Structures, vol.48, issue.3-4, pp.3-4, 2011.
DOI : 10.1016/j.ijsolstr.2010.10.018

M. Ali, A. Qamhiyah, D. Flugrad, and M. Shakoor, Theoretical and finite element study of a compact energy absorber, Advances in Engineering Software, vol.39, issue.2, pp.95-106, 2008.
DOI : 10.1016/j.advengsoft.2006.12.006

M. F. Ashby, T. Evans, N. A. Fleck, J. Hutchinson, H. Wadley et al., Metal Foams: A Design Guide: A Design Guide, 2000.

L. Cui, S. Kiernan, and M. D. Gilchrist, Designing the energy absorption capacity of functionally graded foam materials, Materials Science and Engineering: A, vol.507, issue.1-2, pp.215-225, 2009.
DOI : 10.1016/j.msea.2008.12.011

V. Deshpande and N. Fleck, Isotropic constitutive models for metallic foams, Journal of the Mechanics and Physics of Solids, vol.48, issue.6-7, pp.1253-1283, 2000.
DOI : 10.1016/S0022-5096(99)00082-4

I. Elnasri, S. Pattofatto, H. Zhao, H. Tsitsiris, F. Hild et al., Shock enhancement of cellular structures under impact loading: Part I Experiments, Journal of the Mechanics and Physics of Solids, vol.55, issue.12, pp.2652-2671, 2007.
DOI : 10.1016/j.jmps.2007.04.005
URL : https://hal.archives-ouvertes.fr/hal-00199385

N. Gupta, A functionally graded syntactic foam material for high energy absorption under compression, Materials Letters, vol.61, issue.4-5, pp.4-5, 2007.
DOI : 10.1016/j.matlet.2006.06.033

A. Hanssen, L. Enstock, and M. Langseth, Close-range blast loading of aluminium foam panels, International Journal of Impact Engineering, vol.27, issue.6, pp.593-618, 2002.
DOI : 10.1016/S0734-743X(01)00155-5

J. Harrigan, S. Reid, and A. S. Yaghoubi, The correct analysis of shocks in a cellular material, International Journal of Impact Engineering, vol.37, issue.8, 2010.
DOI : 10.1016/j.ijimpeng.2009.03.011
URL : https://hal.archives-ouvertes.fr/hal-00699209

J. Hohe, V. Hardenacke, V. Fascio, Y. Girard, J. Baumeister et al., Numerical and experimental design of graded cellular sandwich cores for multi-functional aerospace applications, Materials & Design, vol.39, pp.20-32, 2012.
DOI : 10.1016/j.matdes.2012.01.043

B. Hou, H. Zhao, S. Pattofatto, J. Liu, and Y. Li, Inertia effects on the progressive crushing of aluminium honeycombs under impact loading, International Journal of Solids and Structures, vol.49, issue.19-20, pp.19-20, 2012.
DOI : 10.1016/j.ijsolstr.2012.05.005

L. L. Hu and T. X. Yu, Dynamic crushing strength of hexagonal honeycombs, International Journal of Impact Engineering, vol.37, issue.5, pp.467-474, 2010.
DOI : 10.1016/j.ijimpeng.2009.12.001

C. Kammer, Aluminium foam. Talant Lecture 1410 -European Aluminium Association, 1999.

S. L. Lopatnikov, B. A. Gama, M. J. Haque, C. Krauthauser, and J. W. Gillespie, High-velocity plate impact of metal foams, International Journal of Impact Engineering, vol.30, issue.4, pp.421-445, 2004.
DOI : 10.1016/S0734-743X(03)00066-6

S. L. Lopatnikov, B. A. Gama, M. J. Haque, C. Krauthauser, J. W. Gillespie et al., Dynamics of metal foam deformation during Taylor cylinder???Hopkinson bar impact experiment, Composite Structures, vol.61, issue.1-2, pp.61-71, 2003.
DOI : 10.1016/S0263-8223(03)00039-4

S. Maiti, L. Gibson, and M. Ashby, Deformation and energy absorption diagrams for cellular solids, Acta Metallurgica, vol.32, issue.11, pp.1963-1975, 1984.
DOI : 10.1016/0001-6160(84)90177-9

S. Nemat-nasser, W. Kang, J. Mcgee, W. Guo, and J. Isaacs, Experimental investigation of energy-absorption characteristics of components of sandwich structures, International Journal of Impact Engineering, vol.34, issue.6, pp.1119-1146, 2007.
DOI : 10.1016/j.ijimpeng.2006.05.007

S. Pattofatto, I. Elnasri, H. Zhao, H. Tsitsiris, F. Hild et al., Shock enhancement of cellular structures under impact loading: Part II analysis, Journal of the Mechanics and Physics of Solids, vol.55, issue.12, pp.2672-2686, 2007.
DOI : 10.1016/j.jmps.2007.04.004
URL : https://hal.archives-ouvertes.fr/hal-00199386

D. D. Radford, V. S. Deshpande, and N. A. Fleck, The use of metal foam projectiles to simulate shock loading on a structure, International Journal of Impact Engineering, vol.31, issue.9, pp.31-1152, 2005.
DOI : 10.1016/j.ijimpeng.2004.07.012

S. R. Reid and C. Peng, Dynamic uniaxial crushing of wood, International Journal of Impact Engineering, vol.19, issue.5-6, pp.5-6, 1997.
DOI : 10.1016/S0734-743X(97)00016-X

M. R. Said and C. Tan, The response of aluminium foams under quasi-static loading, 2008.

C. Shen, T. Yu, and G. Lu, Double shock mode in graded cellular rod under impact, International Journal of Solids and Structures, vol.50, issue.1, pp.217-233, 2013.
DOI : 10.1016/j.ijsolstr.2012.09.021

C. J. Shen, G. X. Lu, and T. X. Yu, Cellular rod with varying cross-section under impact, Key Engineering Materials, vol.535, pp.94-97, 2013.

P. J. Tan, S. R. Reid, and J. J. Harrigan, On the dynamic mechanical properties of open-cell metal foams ??? A re-assessment of the ???simple-shock theory???, International Journal of Solids and Structures, vol.49, issue.19-20, pp.19-20, 2012.
DOI : 10.1016/j.ijsolstr.2012.03.026

P. J. Tan, S. R. Reid, J. J. Harrigan, Z. Zou, and S. Li, Dynamic compressive strength properties of aluminium foams. Part II??????shock??? theory and comparison with experimental data and numerical models, Journal of the Mechanics and Physics of Solids, vol.53, issue.10, pp.2206-2230, 2005.
DOI : 10.1016/j.jmps.2005.05.003

X. Wang, Z. Zheng, and J. Yu, Crashworthiness design of density-graded cellular metals, Theoretical and Applied Mechanics Letters, vol.3, issue.3, pp.310011-0310015, 2013.
DOI : 10.1063/2.1303101

H. B. Zeng, S. Pattofatto, H. Zhao, Y. Girard, and V. Fascio, Impact behaviour of hollow sphere agglomerates with density gradient, International Journal of Mechanical Sciences, vol.52, issue.5, pp.680-688, 2010.
DOI : 10.1016/j.ijmecsci.2009.11.012
URL : https://hal.archives-ouvertes.fr/hal-00443066

H. Zhao, I. Elnasri, and S. Abdennadher, An experimental study on the behaviour under impact loading of metallic cellular materials, International Journal of Mechanical Sciences, vol.47, issue.4-5, pp.4-5, 2005.
DOI : 10.1016/j.ijmecsci.2004.12.012

Z. Zheng, Y. Liu, J. Yu, and S. R. Reid, Dynamic crushing of cellular materials: Continuum-based wave models for the??transitional and shock modes, International Journal of Impact Engineering, vol.42, pp.66-79, 2012.
DOI : 10.1016/j.ijimpeng.2011.09.009

Z. Zou, S. R. Reid, P. J. Tan, S. Li, and J. J. Harrigan, Dynamic crushing of honeycombs and features of shock fronts, International Journal of Impact Engineering, vol.36, issue.1, pp.165-176, 2009.
DOI : 10.1016/j.ijimpeng.2007.11.008