A CAE based procedure to predict the low velocity impact response of a composite CAI specimen
The behavior of composites materials with respect to residual strength and in particular with the compression strength after damages due to low velocity impact usually is evaluated by the standard of CAI (Compression After Impact) tests. In this case, modeFRONTIER was coupled with an LS-DYNA FE model in order to simulate the impact low velocity impact on composite plate.
The integrated procedure allowed to obtain a better understanding of the influence of some parameters on the simulation results and so pursuing a sensitivity analysis of the experiment. Moreover the configuration proposing the best optimization was computed indicating the best agreement with the experimental data.
Once the workflow was set in modeFRONTIER all the calculations run automatically and all the available time is fully used. The optimized model that comes out from the optimization process allows to study the influence of various factors as boundaries conditions, material properties, etc.