Desarrollo de una herramienta de ingeniería para el análisis de fatiga espectral de estructuras flotantes mediante acoplamiento hidro-elástico
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https://doi.org/10.25043/19098642.133Palabras clave:
fatiga, análisis espectral, estructuras navales, RAO’s de tensión, ANSYS, MAPDL, AQWA, pyansys, damageResumen
Los buques militares son barcos relativamente largos y esbeltos que deben soportar, durante su extensa vida operativa, las cargas cíclicas producidas por el mar. La fatiga es, por lo tanto, para esos buques un parámetro dominante en el diseño estructural del buque y en su operación. Debido a la creciente complejidad de las evaluaciones de fatiga, se desarrolla una herramienta interna para realizar análisis de fatiga espectral automatizados. La herramienta se llama SEAFALT y significa Análisis de Fatiga Espectral a Largo Plazo. Este artículo describe el proceso de cálculo de SEAFALT, junto con los resultados de un caso de estudio. SEAFALT controla automáticamente el proceso de acoplamiento de la carga hidrodinámica calculada en cada escenario de mar (a través de ANSYS AQWA), con su correspondiente respuesta estructural de elementos finitos (FE) (a través de ANSYS MAPDL). SEAFALT calcula: el daño por fatiga esperado a largo plazo en cada nodo del modelo FE y la clase FAT mínima requerida.
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