Hydrodynamics

Publications

Computer Modelling of Full Size Fragmenting Aimable Warheads Using AUTODYN-3D

This study models the hydrodynamic fragmentation of full-scale aimable warheads using AUTODYN-3D, analyzing how shape and initiation design influence blast behavior and fragment distribution. By representing hundreds of individual fragments in high-resolution simulations, the work reveals complex fluid-structure interactions critical to warhead effectiveness. The approach combines experimental validation with CAD-driven optimization for reliable predictive design.

The Numerical Simulation of High Explosives using AUTODYN-2D & 3D

G. E. Fairlie

This paper demonstrates how AUTODYN-2D and 3D hydrocodes are used to simulate the hydrodynamic effects of high explosives in complex scenarios, such as blast propagation, EFP formation, and structural loading. By applying Eulerian, Lagrangian, and SPH modeling techniques, the study highlights how shape configurations and initiation strategies directly influence explosive behavior and design performance. These simulations serve both military and civil applications, enabling detailed insight into

Low Velocity Impact on Laminates Reinforced with Polyethylene and Aramidic Fibres

M.A.G. Silva, C. Cismasiu, C.G. Chiorean

This paper explores the impact resistance of composite laminates reinforced with Kevlar 29 and Dyneema through experimental testing and hydrodynamic simulations. Using AUTODYN, the study models complex anisotropic failure behaviors such as delamination and punching shear, emphasizing the role of material orientation and impact geometry. The results validate the use of hydrodynamic modeling to inform shape optimization and stiffness calibration in composite armor systems.

Ballistic Impact on Ceramic/Aramid Armour Systems

This paper examines how hydrodynamic forces govern damage and penetration in ceramic/aramid armor under high-speed ballistic impact. Using SPH and finite element methods in AUTODYN, the study explores how thickness ratios and shape configurations influence crack patterns, energy dissipation, and ballistic resistance. Parametric simulations reveal optimal composite layering strategies that balance performance and material efficiency.

High Speed Impact on Ceramic Plates

This paper presents a simulation-based investigation into the hydrodynamic response of ceramic armor plates under high-speed projectile impact using SPH in Autodyn. The study models the fracture and energy dissipation behavior of the ceramic plate, emphasizing the role of particle-based hydrodynamics and pressure-dependent failure. Results demonstrate the utility of SPH in resolving complex damage mechanics for shape and material optimization of protective systems.