Torsional and compression loading of paperboard packages: Experimental and FE analysis

The present study investigates torsional and compressive loading of a paperboard package. Finite element (FE) analyses simulating the tests were performed to improve understanding stresses deformations in during loading. A simple experimental characterization necessary material properties could be represent multi-ply as single-ply structure. results from model compared with laminate model, differences between models small. Comparing FE simulations box compression torsion showed that accurately predict response curves. However, simulations, there was an overprediction maximum force torque, which expected since geometrical imperfections heterogeneous internal structure not accounted for or model. Local yield lines formed at onset non-linearities package load–displacement Therefore, strength affects bending stiffness only had minor effect. When first local reached, number reached failure stress increased exponentially. also effect height, but higher packages lower torque.