D-BAUG - Departement Bau, Umwelt und Geomatik - ETH Zürich

Fig. 1: Crack mouth of micro fibre-reinforced cement.
Structures ▪ Highlights
Fig.: Mass distribution of fragments of heterogeneous brittle
materials (open diamonds) and for plastic materials (filled
triangles). The slope of the fitted straight lines is 1.9 (blue)
and 1.25 (red). The insets present corresponding final states
of the breakup process where the white arrows indicate the
velocity vector of a few pieces.
Fig. 2: Final states of impact at low impact velocities in the experiment (a) and in the simulation (b). In the contact area with the hard
wall large permanent deformation occurs due to compression, while above it vertical cracks are formed due to tensile stresses. The
simulations are in a very good agreement with the measurements.
D-BAUG Annual Report 2009 ▪ 53