A local optimisation method for obtaining material model parameters
A local optimisation method for obtaining material parameters in finite element simulations has been developed The method is based on the minimisation of an error function which reflects the accuracy of a numerical prediction with respect to the results of simple specimen tests. The experimental data were obtained from high strain rate tensile tests on the alloy 40 per cent titanium - 6 per cent aluminium - 4 per cent vanadium (Ti6A14V) using the tensile split-Hopkinson pressure bar The behaviour of the tensile specimen was monitored during the test rising lu;p-h-speed photography and transient recorders Finite element simulations were performed using ABAQUS/Explicit employing the Zerilli-Armstrong material model for bce metals).
optimisation finite element simulation testing numerical simulation