Notch-strengthening in two-dimensional foams

Metallic foams show notch-strengthening behavior when analyzing double-edge notched specimen in compression and tension. A discrete microstructural mo del has been used to simulate the effect of notch depth and specimen size o n the net-section-strength. The non-uniform deformation behavior is analyze d by using a strain mapping procedure, highlighting that strain tends to lo calize in discrete bands connecting the notch tips. The net-section-strengt h increases with increasing notch-depth and decreasing specimen size.