Stability and Collapse of Corrugated Board - Numerical and Experimental Analysis

Sammanfattning: This master thesis describes nonlinear nite element analysis and ex- perimental verication tests of a corrugated board panel when loaded in-plane. Detailed modelling of a panel, where both the liner and fluting is represented in detail, is compared to simplied shell modelling with a solid core and to experimental tests. In the experimental tests, Stereo- scopic Digital Speckle Photography is used to obtain the in-plane as well as the out-of-plane displacements. The analyses shows that a local phe- nomenon as buckling of the liner between the corrugations is important for the global load-displacement response. It is also shown that it is possible to predict the load carrying capacity with a simple composite model if a failure criterion that considers both material and structural failure is used.