Thermal Post-Impact Behavior of Closed-Cell Cellular Structures with Fillers – Part I


Article Preview

The study describes the behavior of regular closed-cell cellular structure with gaseous fillers under impact conditions and consequent post-impact thermal conduction due to the compression of filler gas. Two dependent but different analyses types have been carried out for this purpose: (i) a strongly coupled fluid-structure interaction and (ii) a weakly coupled thermalstructural analysis. This paper describes the structural analyses of the closed-cell cellular structure under impact loading. The explicit code LS-DYNA was used to computationally determine the behavior of cellular structure under compressive dynamic loading, where one unit volume element of the cellular structure has been discretised with finite elements considering a simultaneous strongly coupled interaction with the gaseous pore filler. Closed-cell cellular structures with different relative densities and initial pore pressures have been considered. Computational simulations have shown that the gaseous filler influences the mechanical behavior of cellular structure regarding the loading type, relative density and type of the base material. It was determined that the filler’s temperature significantly increases due to the compressive impact loading, which might influence the macroscopic behavior of the cellular structure.



Edited by:

Prof. Andreas Öchsner and José Grácio




M. Vesenjak et al., "Thermal Post-Impact Behavior of Closed-Cell Cellular Structures with Fillers – Part I", Materials Science Forum, Vol. 553, pp. 196-201, 2007

Online since:

August 2007




[1] A. Öchsner, G. Mishuris and J. Grácio: Macroscopic behaviour of porous metals with internal gas pressure under multiaxial loading conditions. 3rd international conference on mathematical modelling and computer simulation of materials technology, Ariel (2005).

[2] D.M. Elzey and H.N.G. Wadley: Acta Mater. Vol. 49 (2001), p.849.

[3] A. Ohrndorf, P. Schmidt, U. Krupp and H.J. Christ: Mechanische Untersuchung eines geschlossenporigen Aluminiumschaums (Deutscher Verband für Materialforschung und - prüfung, Bad Nauheim, 2000).

[4] J. Lankford and K.A. Dannemann: Strain rate effects in porous materials. Materials research society symposium proceeding, Pittsburg (1998).

[5] K. Kitazono, E. Sato and K. Kuribayashi: Acta Mater. Vol. 51 (2003), p.4823.

[6] J.O. Hallquist: Keyword manual (Livermore Software Technology, Livermore, 2003).

[7] A. Öchsner, W. Winter and G. Kuhn: Arch. Appl. Mech. Vol. 73 (2003), p.261.

[8] W. Altenhof and W. Ames: Fatigue Fract. Engng. Mater. Struct. Vol. 25 (2002), p.1149.

[9] S.R. Bodner and P.S. Symonds: J. Appl. Mech. Vol. 29 (1962), p.719.

[10] M. Vesenjak, A. Öchsner, Z. Ren: Influence of pore gas in closed-cell cellular structures under dynamic loading. 4. LS-DYNA Anwenderforum, Bamberg (2005).

Fetching data from Crossref.
This may take some time to load.