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 using the MIL S 901 D Medium Weight Shock Machine to measure their shock deformations. Numerically, finite element model is built up, running both modal and implicit dynamic analyses to predict the structural response of different E-Glass laminates. In the end, results obtained by calculations are compared with experimental data, validating the model.
Shock characterization of fiberglass composite laminates: numerical and experimental comparison
Mannacio F.;Gaiotti M.;Rizzo C. M.;
2022-01-01
Abstract
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 using the MIL S 901 D Medium Weight Shock Machine to measure their shock deformations. Numerically, finite element model is built up, running both modal and implicit dynamic analyses to predict the structural response of different E-Glass laminates. In the end, results obtained by calculations are compared with experimental data, validating the model.File | Dimensione | Formato | |
---|---|---|---|
178_Mannacio_ShockComposites_NAV2022.pdf
accesso chiuso
Descrizione: published paper
Tipologia:
Documento in Post-print
Dimensione
15.14 MB
Formato
Adobe PDF
|
15.14 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
178_Mannacio_ShockComposites_NAV2022_compressed.pdf
accesso chiuso
Descrizione: File compresso per invio Login MIUR
Tipologia:
Documento in versione editoriale
Dimensione
3.89 MB
Formato
Adobe PDF
|
3.89 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.