Numerical and experimental investigation of liner top thickness on the formation and penetration performance of explosively formed projectiles
Year: 2025
Type: article
Abstract: This paper presents a detailed investigation, both numerical and experimental, into the influence of liner top thickness (denoted as δ₁) on the formation dynamics and terminal performance of explosively formed projectiles (EFPs). Six structural variants of a 54 mm caliber EFP warhead were modeled using Ansys Autodyn, with top thickness-to-diameter ratios (δ₁/d) ranging from 0.02 to 0.07. The simulations evaluated key performance metrics, including projectile velocity, kinetic energy distribution, penetration depth, and cavity dimensions. Results demonstrated that EFPs with δ₁/d between 0.03 and $0.05 achieved the best overall balance between aerodynamic stability, structural coherence, and penetration effectiveness. Experimental validation for a configuration with δ₁ = 2 mm (δ₁/d ≈ 0.044) showed good agreement in both velocity and cavity geometry. These findings provide robust design guidelines for optimizing EFP liners and confirm the reliability of numerical modeling for preliminary engineering evaluations.
Source: Vietnam Journal of Mechanics
Authors: Pham Hong Quan, Do Van Minh, Tran Dinh Thanh
Institution: Le Quy Don Technical University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4415901475