LS-DYNA simulation of the ballistic and structural performance of transparent armor systems with angled composite design and air gap structure 2019-01-0711
The behavior of different layer designs of transparent armor (TA) under large strains needs to be investigated. The impact of light-armor piercing ammunitions (7.62x51AP) was tested and analyzed for the purpose of predicting the TA response when the inner layer design angles are adjusted. The penetrative capability of the ammunition was assessed in terms of both the ballistic limit velocity against various layer design angels of the TA and air gaps. The input and exit velocities of the penetrative showed variations dependent upon the TA inner layer angle design in conjunction with air gaps. Examinations of the ballistic limits of different layer angle designs showed that the greater inner layer angles (10 degrees or higher) performed better in comparison to typical layer designs. Transient non-linear dynamic finite-element analysis were employed by LS-DYNA to simulate and validate the experimental data. Reasonable agreement between the simulation and the experimental results was achieved.
Emad Attalla, Badih Jawad, Steven Grate, Vernon Fernandez, Sabah Abro, Liping Liu
Lawrence Technological University, AM General LLC