*MAT_PAPER and *MAT_COHESIVE_PAPER: Two New Models for Paperboard Materials

We here present two new material models for the modeling of paperboard materials. The main motivation for the models is to accurately simulate the production of food and beverage containers for the packaging industry. The main material, *MAT_PAPER, is an orthotropic elastoplastic model that supports both solid and shell elements. In conjunction, an elastoplastic cohesive material, *MAT_COHESIVE_PAPER, is introduced to simulate delamination. Simulations of bending and creasing of paperboard using these new materials, performed in collaboration with Tetra Pak, has shown good correlation with experimental results