The following study addresses the high-velocity impact response of fiber-metal laminates, in particular carbon-aluminum laminates. The work was divided into different stages, the first being the characterization of the materials. The following stage was focused on experimental analysis using a pressurized gas gun to impact carbon-reinforced plastic, aluminum, and carbon-aluminum laminates. This stage is dedicated to finding the minimum thickness necessary to stop a spherical projectile shot at 120 m s-1, identifying the failure modes and energy absorption of the laminates. Numerical analysis in the commercial finite element software LS-Dyna followed where the model of the materials and the impact were built considering the data from the previous phases. Finally, a comparison between the experimental and numerical results was carried out to validate the numerical models.
Il seguente lavoro tratta la risposta all’impatto ad alta velocità dei laminati in fibrametallo, in particolare i laminati in carbonio-alluminio. Lo studio è diviso in diverse fasi, la prima fase è la caratterizzazione dei materiali. La seguente fase si è focalizzata sull’analisi sperimentale utilizzando una pistola a gas pressurizzata per colpire laminati in plastica rinforzata con carbonio, alluminio e carbonio-alluminio. Questa fase è dedicata a trovare il minimo spessore necessario per fermare un proiettile sferico a 120 m s-1, identificare modalità di guasto e assorbimento di energia dei laminati. È seguita un’analisi numerica nel software commerciale agli elementi finiti LS-Dyna dove è stato costruito il modello dei materiali e dell’impatto considerando i dati dalle fasi precedenti. Finalmente è stato effettuato un confronto tra i risultati sperimentali e numerici per validare i modelli numerici.
Experimental and numerical analysis of hybrid CFRP/aluminum laminates reponse under high velocity impacts
SÁNCHEZ OLIVERA, FRANCISCO JAVIER
2022/2023
Abstract
The following study addresses the high-velocity impact response of fiber-metal laminates, in particular carbon-aluminum laminates. The work was divided into different stages, the first being the characterization of the materials. The following stage was focused on experimental analysis using a pressurized gas gun to impact carbon-reinforced plastic, aluminum, and carbon-aluminum laminates. This stage is dedicated to finding the minimum thickness necessary to stop a spherical projectile shot at 120 m s-1, identifying the failure modes and energy absorption of the laminates. Numerical analysis in the commercial finite element software LS-Dyna followed where the model of the materials and the impact were built considering the data from the previous phases. Finally, a comparison between the experimental and numerical results was carried out to validate the numerical models.File | Dimensione | Formato | |
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ExecutiveSummary_FRAJASA.pdf
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Descrizione: summary
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1.89 MB
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Thesis_HighVeolcityImpact.pdf
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Descrizione: Experimental and numerical analysis of hybrid CFRP/aluminum laminates response under high-velocity impacts
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24.7 MB
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24.7 MB | Adobe PDF | Visualizza/Apri |
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https://hdl.handle.net/10589/209373