Constitutive modelling of aluminium foams

In this paper an aluminium foam model is proposed for a vehicle crash analysis. The model assumes that there is no coupling between stresses and strains in different principal directions. The stress in each principle direction is then interpolated from an experimental recorded uniaxial stress strain curve. This curve can also be scaled to include the strain rate and pressure effects. The model is computationally efficient and can be applied in large-scale structural crash simulations of vehicles. Furthermore, all the corresponding material parameters in the model can be identified from a single uniaxial test