Effect of impact velocity on the mechanical behavior of a composite plate under slamming impact

• Published in: Materials today : proceedings Vol. 58; pp. 1319 - 1323
• Main Authors: EL Garouge, Salwa, Tarfaoui, Mostapha, Hassoon, Omar Hashim, EL Minor, Hassan, Bendarma, Amine
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 2022; Elsevier
• Subjects: CEL method; Composite structures; Engineering Sciences; Fluid-Structure Interaction; Hydrodynamic effect; Impact velocity; Mechanics; Structural behavior; CFD; FEA; CEL method; Impact velocity; Fluid-Structure Interaction; Hydrodynamic effect; SPH; Structural behavior; CEL; Composite structures
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2022.02.174

The naval sector remains a large field of investigation for composites, specifically to deal with complex hydrodynamic impacts such as slamming. In order to optimize those composite structures and avoid damage due to the pressures and forces generated during slamming, this impact was modelled using an 8 mm glass/ epoxy composite panel, inclined at an angle of 10° and impacting the water surface at different velocities (4 m/s, 6 m/s, 8 m/s, 10 m/s). This study was done on the finite element calculation code Abaqus, using the Coupled Eulerian-Lagrangian method, that has been developed and widely used ever since, to overcome the difficulties concerning large deformation in finite elements simulations and makes it possible to avoid the distortions of mesh which can have a great influence on the results. Several studies were carried out to determine the effect of the impact velocity on the hydrodynamic force, the deformation and pressure. The results show that there is, indeed, a big influence of the impact velocity on the mechanical properties; When the impact velocity increases, the deformation and the hydrodynamic force increase too and the jet flow becomes very important. This study makes it possible to create more efficient composite structures, in order to develop ships able to face very hostile environments and avoid the generation and evolution of slamming impact consequences such as damage.