Investigating the growth of surface crack and high cycle fatigue in surface-piercing propeller

• Mojtaba Pakian Bushehri ^[1] ; Mohammad Reza Golbahar Haghighi ^[1] ; Parviz Malekzadeh ^[1] ; Ehsan Bahmyari ^[1]
  1. [1] Persian Gulf University

     Persian Gulf University

     Irán

     
• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 53, Nº. 2, 2025, págs. 1544-1571
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this study, the progress of surface crack and high cycle fatigue of the surface piercing propellers (SPPs) are investigated numerically using the finite element method. The cyclic load is calculated from the hydrodynamic pressure on the blade by simulating the fluid around the blade using the computational fluid dynamics software STAR-CCM+. The initial cracks are assumed to be created near the blade root. The fatigue life is calculated from the Paris-Erdogan equation. The results show that the crack close to the root has a shorter life and the stresses at the crack front depend on the blade-water interaction duration