Numerical Studies on the Influence of a Reinforcing Material on the Energy Absorption in a Multilayered Composite during Impacts

The influence of arrangement of carbon- and aramid-fiber reinforcing layers in a multilayered epoxy composite on its energy absorption at the action of an impactor on it has been investigated. The geometry of the impactor corresponded to a 7.62x51-mm projectile core. Its initial velocity was 250 m/s. The numerical research was carried out using the finite-element method in the LS-Dyna software. Bilateral constraints with a strength criterion were used to observe the delamination process between composite layers. Results of the investigation allow one to determine the arrangement of different layers in a multilayered composite which maximizes its ability to absorb the impact energy.

Automated summary

This study investigates the impact of the arrangement of carbon and aramid fiber reinforcing layers in a multilayered epoxy composite on its energy absorption capabilities. The findings reveal that the optimal layer arrangement can maximize the composite's ability to absorb impact energy.