Analytical Solution for Pin-Supported Metal Foam Core Sandwich Beam with Local Denting

Abstract:

Structural response of pin-supported metallic foam core sandwich beam is theoretically investigated. Effects of local denting and core strength and interaction of bending and axial stretching are considered in analysis. A rigid-plastic beam-on-foundation is employed to consider local denting deformation. The local denting continues during the overall deformation of sandwich beam. It is shown that upon neglecting the effect of local denting, the load-carrying capacity and energy absorption of sandwich beam may be overestimated, and the normal axial (membrane) force associated with plastic stretching substantially stiffens the sandwich beams.

• Periodical: Key Engineering Materials (Volumes 462-463)
• Pages: 639-644
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.462-463.639
• Online since: January 2011
• Authors: Qing Hua Qin, Jian Xun Zhang, Tao Wang, Tie Jun Wang
• Keywords: Energy Absorption, Indentation, Large Deflection, Metal Foam, Sandwich Beam

References

[1] M.F. Ashby, et al., Metal Foams: A Design Guide (Butterworth Heinemann, Oxford 2000).

[2] L.J. Gibson and M.F. Ashby: Cellular Solids: Structure and Properties 2nd ed. (Cambridge University Press, Cambridge 1997).

[3] H.G. Allen: Analysis and design of structural sandwich panels (Pergamon Press 1969).

[4] V.L. Tagarielli and N.A. Fleck: ASME, J. Appl. Mech. Vol. 72 (2005), p.408.

[5] Q.H. Qin and T.J. Wang: Adv. Mater. Res. Vol 33-37 (2008), p.559.

[6] Q.H. Qin and T.J. Wang: Compos. Struct. Vol. 88 (2009), p.509.

[7] Q.H. Qin and T.J. Wang: Eur. J. Mech. - A/Solids Vol. 28 (2009), p.1014.

[8] Q.H. Qin, T.J. Wang and S.Z. Zhao: Int. J. Mech. Sci. Vol. 51 (2009), p.752.