DI MARZO F.

Even if the non-contact underwater explosion phenomenon has been studied for decades and various numerical methods have been provided in open literature, its effects on naval structures, especially those made by composite materials, are, even nowadays, a matter of research. Actually, a fully coupled fluid-structure interaction model for...

Despite the underwater explosion phenomena (UNDEX) have been studied for decades and several numerical methods have been proposed in literature, the simulation of the whole phenomenon in issue is even nowadays a matter of research. In this paper, a Volume of Fluid (VOF) approach, which allows the simulation of Fluid-Structure Interaction (FSI),...

Non-contact underwater explosions (UNDEX) can cause extremely large deformations on naval composite structures related to heavily nonlinear phenomena. For this reason, for military purposes, used materials must have excellent shock resistance properties. Historically, the underwater shock transient effects on fiberglass laminates are predicted...

The underwater shock explosions can cause severe damage not only to the naval ships machinery and equipment, but also to their foundation structures, that are a critical part of the system integration. A few national rules allow shock resistance verification by means of dedicated calculations as it is in general not possible the testing of the...

Le esplosioni subacquee possono arrecare danni severi non solo ai macchinari di bordo, ma anche ai loro basamenti, le cui proprietà di robustezza sono critiche al fine di garantire l'efficienza dell'intero sistema fondazione-macchinario. In genere, non è sempre possibile garantire il rispetto dei requisiti di shock tramite test sperimentali,...

When subjected to a no contact underwater explosions (UNDEX), naval composite structures show highly nonlinear deformations. In this paper, fiberglass composite laminates are characterized dynamically. Experimentally, modal analyses are carried out to determine the modal parameters of the specimens, while dedicated shock tests are performed...