Mechanics of Paperboard Packages : Performance at Short Term Static Loading
Paper 1Several problems emerge when a paperboard package is modeled by means of the nite element method. One of the issues that one has to deal with is the constitutive model of the paperboard. Paperboard and paper in general areorthotropic materials, which means that constitutive parameters in three orthogonal directions must be determined. Furthermore, the geometry of papersheets makes it dicult