Features of Meso-Deformation and Failure of Aluminum Foam under Impact

Abstract:

Deformation and failure of meso-structures take great effect on the loading and energy absorption of aluminum foam under impact. We designed a split Hopkinson pressure bar (SHPB)-high speed digital camera system to monitor the meso-deformation and failure features, and measure the nonuniformity of deformation of aluminum foam under impact. The meso-deformation and failure of aluminum foam were observed successfully by the system, and it showed that there does exist remarkable nonuniform deformation along the specimen. In order to expand the experimental results, the specimen of aluminum foam with meso-structures is modeled by 3D Voronoi technique. The numerical results show that the FE model can simulate the experiment well, and shows that nonuniformity of deformation appears in aluminum foam specimen significantly. The analysis indicates that the assumption of uniform deformation of specimen in SHPB cannot be strictly satisfied for the material of aluminum foam.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 2235-2240
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.2235
• Online since: December 2012
• Authors: Bao Yang, Li Qun Tang, Yi Ping Liu, Ze Jia Liu, Zhen Yu Jiang
• Keywords: Aluminum Foam, Impact, Meso-Deformation and Failure, SHPB

References

[1] L.J. Gibson, M.F. Ashby, Cellular solids: structure and properties (Cambridge University Press, Cambridge1997).

[2] I.W. Hall, M. Guden, C.J. Yu, Scripta Mater, Vol.43 (2000), P. 515-521.

[3] T. Mukai, T. Miyoshi, S. Nakano, H. Somekawa, K. Higashi, Scripta Mater, Vol.54 (2006), P. 533-537

DOI: 10.1016/j.scriptamat.2005.10.062

[4] C.M. Cady, G.T. Gray, III, C. Liu, M.L. Lovato, T. Mukai, MAT SCI ENG A-STRUCT, 525 (2009) 1-6.

[5] V.S. Deshpande, N.A. Fleck, Int J Impact Eng, Vol.24 (2000), P.277-298

[6] D.P. Mondal, M.D. Goel, S. Das, MAT SCI ENG A-STRUCT, 507 (2009) 102-109.

[7] Z.Q. Wei, X.Q. Huang, B. Yang, L.Q. Tang, Y.W. He, Journal of Experimental Mechanics 26 (2011) 1-7.

[8] S.R. Reid, C. Peng, Int J Impact Eng, 19 (1997) 531-570.

[9] B. Song, M.J. Forrestal, W. Chen, Exp Mech, 46 (2006) 127-136.

[10] D.D. Radford, V.S. Deshpande, N.A. Fleck, Int J Impact Eng, 31 (2005) 1152-1171.

[11] W. Chen, B. Song, Split Hopkinson (Kolsky) Bar Design, Testing and Applications, NY (2011), p.127

[12] A.-F. Bastawros, H. Bart-Smith, A.G. Evans, J Mech Phys Solids, Vol.48 (2000), pp.301-302

[13] A.-F. Bastawros, A.G. Evans, Adv Eng Mater, Vol.2 (2000), pp.210-214

[14] Information on http://math.lbl.gov/voro++

[15] Imformation on http://www.opencascade.org