Simulation on Shock Wave Propagation in Metallic Foams Subjected to Impact Loading

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A discretization elastic-plastic material model was used for simulating the shock waves transmission within metallic foams. The density heterogeneity of metallic foams was considered. Several types of aluminum foams are studied on the transmission of displacement and stresses wave under impact loading. The results reveal the characteristics of compressive wave propagation within the metal foams. Under low impact pulses, considerable energy is dissipated during the progressive collapse of foam cells, and then reduces the crush of the objects. When the pulse is high sufficiently, on the fixed end of foam, stress enhancement may take place, where high peak stresses usually occur. The magnitude of the peak stress depends on the relative density of foams, the pulse loading intensity, the pulse loading duration as well as the density homogeneity of foam materials. This research offers valuable insight into the reliability of the metal foams used as vehicles and protective structure.

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Edited by:

Chunliang Zhang and Paul P. Lin

Pages:

536-540

Citation:

Y. F. Zhang, "Simulation on Shock Wave Propagation in Metallic Foams Subjected to Impact Loading", Applied Mechanics and Materials, Vols. 226-228, pp. 536-540, 2012

Online since:

November 2012

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[1] G.J. Cooper, D.J. Townend, S.R. Cater, B.P. Pearce: Journal Biomechanics, Vol. 24 (1991) No. 5, p.273.

[2] Q.M. Li, H. Meng: International Journal of Impact Engineering, Vol. 27 (2002) No. 10, p.1049.

[3] I. Elnasri, S. Pattofatto, H. Zhao, H. Tsitsiris: Journal of the Mechanics and Physics of Solids, Vol. 55 (2007) No. 12, p.2652.

[4] P.J. Tan, S.R. Reid, J.J. Harrigan, Z. Zou, S. Li: Journal of the Mechanics and Physics of Solids, Vol. 53 (2005) No. 10, p.2206.

[5] D. Karagiozova, G.S. Langdon, G.N. Nurick: International Journal of Solids and Structures, In Press, Corrected Proof (2012).

[6] L.J. Gibson, M.F. Ashby: Cellular solids: structure and properties (2nd ed. Cambridge, UK; Cambridge University Press, 1997).