Reinés-Navedo, Juan J.

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    Mixed-mode fracture & fatigue analysis of rotating blades using the extended finite element method
    (2010) Reinés-Navedo, Juan J.; Goyal, Vijay K.; College of Engineering; Quintero, Pedro; Valentín, Ricky; Department of Mechanical Engineering; Colón-Reyes, Omar
    This work focuses in the analysis of mixed-mode crack propagation and fatigue of two dimensional rotating blades using the Extended Finite Element Method (XFEM). A horizontal plate model simulates a UH-60 helicopter rotor blade rotating at a constant angular velocity. The calculation of body forces mixed-mode fatigue analysis was implemented into XFEM. The critical location is at about 8% from the rotating hub for a single-edged crack. At this critical location, a crack size of approximate 15% of total blade width will cause catastrophic failure.