Optimizing equivalent testing for scaled projectile penetration into multilayer concrete targets with fuse overload...

Area of Science:

• Engineering
• Materials Science
• Ballistics

Background:

• Determining equivalent experimental conditions for scaled projectiles penetrating multilayer concrete targets is challenging.
• Existing methods often yield inaccurate fuse overload peaks or low accuracy (up to 580% error).

Purpose of the Study:

• To develop a precise and reliable method for optimizing equivalent experimental conditions for scaled projectiles impacting multilayer targets.
• To address the inaccuracies in current optimization techniques for scaled projectile penetration tests.

Main Methods:

• Proposes a layer-by-layer chasing-catching method, adapted from tridiagonal linear equation solvers.
• Utilizes impact velocity, residual velocity, and fuse peak overload/pulse width for single-layer penetration data.
• Applies the method to optimize conditions for 2-4 layer targets.

Main Results:

• Ensures peak overloads on fuses for scaled projectiles are 1-1.3 times those of prototype projectiles.
• Achieves pulse widths for scaled projectiles that exceed those of prototype projectiles.
• Demonstrates superior accuracy and reliability compared to existing optimization methods.

Conclusions:

• The layer-by-layer chasing-catching method offers accurate and reliable solutions for equivalent experimental conditions.
• This method enhances the fidelity of scaled projectile testing on multilayer concrete targets.
• Improves the understanding of projectile-target interaction dynamics in scaled experiments.