Numerical Homogenization of Single-Walled Corrugated Board with Imperfections

Numerical homogenization is an excellent tool for the quick simplification of complex structures with a model that much simpler and, at same time, accurately reflects mechanical behavior original model. Corrugated cardboard modeling, all geometrical nuances preserved, complicated and time-consuming process. The transfer full 3D corrugated board composed two flat layers middle layer to one only, substitute elastic parameters, greatly simplifies this Because individual are made paper grammage in range 80–200 g/m2, i.e., very thin plates, they slightly buckled even initial configuration. These imperfections affect equivalent parameters obtained This presents approach taking into account these when creating simplified numerical method based on equivalence energy between representative volumetric element (i.e., part model) plate were applied. Different shapes analyzed order buckling modes, notably specific unit deformation curvature. Finally, form was proposed, which most decrease stiffnesses.