I expect much lower Young modulus comparativly to solid material.
On the other hand I can offer additional material characterization of your metalic foams. What can you say?
links
https://polymerfem.com/showthread.php?1145-Polyethylene-Foam-Modeling
http://www.mate.tue.nl/mate/pdfs/10702_sec.pdf
http://www.sciencedirect.com/science/article/pii/S0020768308000036
http://silver.neep.wisc.edu/~lakes/PoissonIntro.html
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