Elastic-plastic Behaviour of Perforated Aluminium under Tension and Compression

Abstract

The elastic-plastic behaviour of perforated aluminium sheets is examined in relation to the relative density.
A compression device, which permits a changeable support of the specimens, was designed for that purpose. The gained results are discussed in the context of a modified Voigt-Reuss mixing rule and are compared with results from tensile tests. The experiments are simulated by means offinite element calculations, expanded on smaller relative densities and the influence of the boundary conditions at the ends of the specimens on the results is examined. Finally, the initial yielding on the microscale is examined and compared to macroscopically determined values.