Publication: Simulación numérica de ensayos balísticos sobre laminados de fibra de carbono y estudio de resistencia post-impacto
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Publication date
2014-07
Defense date
2014-07-25
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Abstract
Este proyecto consiste en la simulación con el software estructural LS-Dyna,
de la resistencia de un laminado de fibra de carbono ante impactos balísticos con
posterior realización de estudio de resistencia del laminado después del impacto.
Para ello primeramente se validará el modelo de simulación para poder
afirmar que los resultados obtenidos sean extrapolables a la realidad.
Posteriormente se procederá a un estudio de optimización de tiempos de
simulación probando diferentes configuraciones de cálculo en paralelo que
permite realizar el software. Finalmente se realizará el estudio de resistencia de la
placa post impacto (ensayo CAI) para diferentes velociadades de impacto.
En los análisis de los resultados se muestra la absorción de energía de las
fibras en función de la orientación de las mismas en el momento en el que se
realiza la compresión del laminado. También se realiza un estudio de la relación
que tiene, tanto la velocidad de impacto como el área deslaminada, en la fuerza
última de rotura de compresión de la placa.
This project involves the simulation with the structural software LS-Dyna, of the resistance of a carbon fiber laminate under ballistic impacts study further embodiment of the laminate resistance after impact. This first simulation model is validated to assert that the results can be extrapolated to reality. Later, it has been proceeded to do a study of the optimization of simulation time trying different configurations of parallel computing which are allowed by the software LS-Dyna. Finally, the study of postimpact strength (CAI test) for different impact velocities is performed. In the analysis of the results the energy absorption of the fibers is shown as a function of the orientation of the same in the moment in which the compression of the laminate is made. A study of the relationship of both velocity impact and delaminated area, in the last compressive breaking strength of the plate, are also performed.
This project involves the simulation with the structural software LS-Dyna, of the resistance of a carbon fiber laminate under ballistic impacts study further embodiment of the laminate resistance after impact. This first simulation model is validated to assert that the results can be extrapolated to reality. Later, it has been proceeded to do a study of the optimization of simulation time trying different configurations of parallel computing which are allowed by the software LS-Dyna. Finally, the study of postimpact strength (CAI test) for different impact velocities is performed. In the analysis of the results the energy absorption of the fibers is shown as a function of the orientation of the same in the moment in which the compression of the laminate is made. A study of the relationship of both velocity impact and delaminated area, in the last compressive breaking strength of the plate, are also performed.
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Keywords
Mecánica de medios continuos, Ensayo de materiales, Análisis numérico, Simulación por ordenador, Resistencia última a compresión, LS-Dyna, Deslaminación