The objective of this study is (1) to validate the *MAT_224 model for Aluminum 2024 with complex impact conditions; (2) to evaluate its predictability of ballistic limit and residual velocities of a projectile under various impact conditions; and (3) to investigate the effects of oblique and attitude angle variations of a projectile on penetration to a target plate. The newly developed *MAT_224 model version 2.0 for Aluminum 2024 was utilized to simulate a series of ballistic impact tests conducted by NASA using a rectangular block projectile of Inconel 718 with sharp edges and corners, impacting Aluminum 2024 flat panels at oblique angles of incidence. A full ballistic impact simulation model was created with over twenty million solid elements and used to conduct approximately one hundred ballistic impact simulations. Overall, the ballistic impact simulations showed highly comparable results with the NASA tests in terms of projectile residual velocities, failure shapes of the target plates, and projectile penetration behavior. Based on a series of ballistic impact simulations, the ballistic limit velocities of the projectile were predicted. 
 
DOI: https://doi.org/10.1061/9780784483381.015

Ballistic Impact Simulations of an Aluminum 2024 Panel using *MAT_224 in LS-DYNA Considering Oblique and Attitude Angles of a Rectangular Projectile

Due to challenges with COVID-19, this 17th Biennial has been moved to April 2021 and will now be offered in a virtual format. This conference aims to bring the experience and knowledge of experts in the aerospace industry together to share and discuss the latest research and engineering techniques that effect the exploration and settlement of space. Presentations will be made in multiple concurrent symposia over three days. Topics will include: Granular materials in space exploration, Exploration in utilization of extra-terrestrial bodies, advanced materials and designs for aerospace and terrestrial structures under extreme environment, Structures in challenging environments, and Space engineering, construction, and architecture for Moon, Mars, and beyond.

Paper Proceedings: https://ascelibrary.org/doi/book/10.1061/earthandspace2021