Non-Penetrating Impact Simulation of Stitched Resin Film Infused Composites

The CODAM constitutive model has been implemented in LS-DYNA as a user-defined material model (UMAT). Using this material model, quasi-static over-height compact tension (OCT) tests on a stitched resin film infused (S/RFI) carbon/epoxy composite material were simulated, and the results demonstrated good agreement with the measured force and crack mouth opening displacement (CMOD). The same CODAM inputs were then used to simulate non-penetrating impact events on the S/RFI material. The simulations successfully predicted the peak force and event durations for targets oriented in one direction, but under-predicted the peak force and over-predicted the event duration for the opposite target orientation.