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Impactos de alta velocidad en materiales compuestos

Authors: García Marañón, Álvaro;

Impactos de alta velocidad en materiales compuestos

Abstract

En el presente proyecto fin de carrera se ha estudiado el comportamiento de un elemento estructural fabricado con un determinado material compuesto ante el impacto de un proyectil a altas velocidades. Con este objetivo, se realiza un análisis desde el punto de vista numérico completando todas las simulaciones necesarias para extraer las pertinentes conclusiones. Para la realización de este estudio numérico, se ha optado por escoger una placa como elemento estructural fabricada con el material compuesto motivo de estudio de este proyecto. Para garantizar la máxima precisión en los ensayos numéricos que se van a realizar, se decide también incluir un elemento cohesivo en la placa. Para comprobar la validez del modelo escogido, se comparan los resultados numéricos obtenidos, con los resultados experimentales proporcionados. Se evalúan algunos de los parámetros más significativos del proceso de impacto, a saber: límite balístico del material, velocidad residual, energía absorbida por el compuesto y extensión del área dañada. Se hacen diversas simulaciones tanto para un amplio rango de velocidades de impacto. Tras la obtención de todos los datos, se realizan las gráficas pertinentes y se comparan los resultados numéricos con los experimentales. Finalmente, se extraen las conclusiones más relevantes y se concluye o no la validez del modelo empleado en este proyecto. In this Final Year Project, it has taken place the study of a determined structural element built of a concret CFRPs material when it suffers an impact of a projectile. It will be studied the behavior of a CFRP material from low speeds, behind ballistic limit, to high speeds, much higher than ballistic limit. We will focus in numerical side, comparing our numerical results with experimental values. To complete the numerical study, it has been decided to choose, as structural element, a square specimen made of our CFRP material. To guarantee, the maximum precision in the procedures, it ´s also been decided to include a cohesive element in the specimen. To check the validity of the numerical method, numerical results will be compared to experimental results take from previous simulations. Some of the most relevant parameters of the impact process will be evaluated, just like: ballistic limit of the CFRP, residual velocity of the CRFP, absorbed energy by the material during the impact process and delaminated area. Many velocities simulations will be completed for low and high velocities. In each case, it will be refered to ballistic limit situation, below ballistic limit and above it. After completing the measures, it will be performed experimentals and numericals graphics to compare easier all the results. Finally, it will be extracted the most relevant conclusions and it will be ratified or not the validity of the selected model. Ingeniería Industrial

Country
Spain
Related Organizations
Keywords

Ensayo de materiales, Mecánica de sólidos, Materiales compuestos, Ingeniería Industrial

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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