Understanding the Impact Resistance of Projectiles with Electronic Equipment and Thermal Battery Under High-Speed Acceleration and Rotation

This study aimed at developing a structural analysis method considering both acceleration and rotation of projectiles in gas gun tests to evaluate and improve their impact resistance during artillery firing. The 2- and 3-dimensional simulation results of deceleration and target penetration depth closely aligned with actual test results, providing an effective means to quantitatively assess the impact resistance of projectiles and analyze the influence of rotation on collision processes. While the projectile's deceleration slightly increased with rotational speed, rotational motion had minimal effect on deformation during most collision processes, maintaining stability and efficiently transferring energy. This indicates that high-speed rotation had an insignificant effect on deceleration and target penetration depth, and solid-state electronic equipment was largely unaffected by rotation. However, rotational deceleration increased with projectile velocity and rotation speed. For thermal batteries, thus, solid-state electrolytes should be used to prevent liquid leakage due to rotation. Additionally, shock-absorbing materials, sealing, and protective layers can be employed to mitigate vibration and shock. These findings suggest that simulations effectively complemented gas gun tests, providing an efficient method to evaluate projectile impact resistance.