JavaScript is disabled for your browser. Some features of this site may not work without it.

    Listar

    Todo RIUMAComunidades & ColeccionesPor fecha de publicaciónAutoresTítulosMateriasTipo de publicaciónCentrosDepartamentos/InstitutosEditoresEsta colecciónPor fecha de publicaciónAutoresTítulosMateriasTipo de publicaciónCentrosDepartamentos/InstitutosEditores

    Mi cuenta

    AccederRegistro

    Estadísticas

    Ver Estadísticas de uso

    DE INTERÉS

    Datos de investigaciónReglamento de ciencia abierta de la UMAPolítica de RIUMAPolitica de datos de investigación en RIUMAOpen Policy Finder (antes Sherpa-Romeo)Dulcinea
    Preguntas frecuentesManual de usoContacto/Sugerencias
    Ver ítem 
    •   RIUMA Principal
    • Investigación
    • Ponencias, Comunicaciones a congresos y Pósteres
    • Ver ítem
    •   RIUMA Principal
    • Investigación
    • Ponencias, Comunicaciones a congresos y Pósteres
    • Ver ítem

    Correlation between the pivot node concept and fatigue crack closure

    • Autor
      Camas-Peña, DanielAutoridad Universidad de Málaga; González-Herrera, AntonioAutoridad Universidad de Málaga; García-Manrique-Ocaña, José ManuelAutoridad Universidad de Málaga
    • Fecha
      2018-10-05
    • Palabras clave
      Ingeniería
    • Resumen
      The study of fatigue crack growth has been commonly done by means of bi-dimensional models and assuming a homogeneous behaviour through the thickness. According to the specimen thickness, a state of plane stress or plane strain is presumed. However, recently, it has been shown that thickness effects influence the crack tip behaviour. These works have revealed a series of effects along the thickness with a strong influence on the crack front growth. One of the experimental evidences that can be explained as a direct consequence of these effects is the curvature of the crack. It is observed that when the crack advance, the crack front changes adopting a curved shape, growing faster at the interior than at the exterior. Two mechanisms can explain this effect: the first one is related to the crack closure effect near the surface. The second one, related to the plastic zone size decrement observed in a small region close to the surface, is due to ΔK being smaller near the surface than in the interior. Both mechanisms are difficult to evaluate separately. A series of works were devoted to study these effects. A research line has been focused in the analysis of the stress intensity factor distribution. These works evaluate the finite element model of an Al 2024-T35 compact tension specimen with no plastic wake effect introduced, according to the methodology developed by the authors. The three-dimensional behaviour in the vicinity of the crack front is simulated through numerical analysis with ANSYS code and J-integral method is used to determinate the curves of K evolution along the thickness. The main finding of these studies is that the distribution of K is not homogeneous. The overall values for the whole model accurately agree with the nominal K applied. The K profiles along the thickness are characterized by a series of parameters that allow us to analyze the distribution of K in terms of the expected Knom against variations of geometrical and external factors.
    • URI
      https://hdl.handle.net/10630/16582
    • Compartir
      RefworksMendeley
    Mostrar el registro completo del ítem
    Ficheros
    ICMFMXIX_Abstract_pivot.pdf (309.2Kb)
    Colecciones
    • Ponencias, Comunicaciones a congresos y Pósteres

    Estadísticas

    Buscar en Dimension
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
     

     

    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA