This article deals with experimental and analytical analysis of the mechanical behavior of crushed foam cores. Three rigid cellular core materials are tested in a uniaxial compression-tension cycle. An analytical model is proposed describing the stress-strain curve in tension and secondary compression. A special emphasis is laid on the relaxation behavior of a crushed foam core in tension.
Grenestedt, G. L. (1999). Effective Elastic Behavior of Some Models for ‘Perfect’ Cellular Solids , International Journal of Solids and Structures, 36(10): 1471-1501 .
2.
Li, Q. M. , Mines, R. A. W. and Birch, R. S. (2000). The Crush Behaviour of Rohacell-51WF Structural Foam , International Journal of Solids and Structures, 37(43): 6321-6341 .
3.
Li, Q. M. and Mines, R. A. W. (2002). Strain Measures for Rigid Crushable Foam in Uniaxial Compression , International Journal for Strain Measurement, 38(4): 132-140 .
4.
Koissin, V. and Shipsha, A. (2001). Mechanical Properties of Pre-compressed and Undamaged Divinycell H-grade Foam Core, Report C2001-5, Department of Aeronautics, Royal Institute of Technology, Stockholm .
5.
Koissin, V. (2004). The Local Strength of Foam Cored Sandwich Structures, PhD Thesis, Department of Strength of Materials, State Marine Technical University, St.-Petersburg, Russia. (in Russian).
6.
Koissin, V. , Skvortsov, V. and Shipsha, A. (2006). Stability of the Face Layer of Sandwich Beams with Sub-interface Damage in the Foam Core. To be published in Composite Structures .
