Metal Foams: A Design Guide

158 Metal Foams: A Design Guide
Figure 11.8 Sections through tubes with and without foam fillings, after
partial crushing. (Figure courtesy of Seitzberger et al., 1999)
Axial compressive force [kN]
80
60
40
20
0
0 20 40 60
Axial compression (mm)
3
4
2
1
Foam filled
tube
Sum 1 + 2
Empty tube
Foam
80 100
Figure 11.9 Load-deflection curves for a foam, a tube and a foam-filled
tube. The fourth curve is the sum of those for the foam and the tube. The
foam-filled tube has a higher collapse load, and can have a higher energy
absorption, than those of the sum. (Figure courtesy of Seitzberger et al., 1999)