RT Journal Article
T1 A closed expression for the stress intensity factor of concave fatigue cracks in rotating shafts
A1 Rubio Herrero, Patricia
A1 Bernal Cuadrado, Javier
A1 Muñoz Abella, María Belén
A1 Rubio Ruiz de Aguirre, María Lourdes
AB A new analytical model is developed that allows us to obtain the Stress Intensity Factor (SIF) in a point on a concave shaped crack contained in a rotating shaft as a function of the characteristics of the crack (depth and aspect), the point position on the crack front, and the rotation angle. The model can be used for all kinds of linear elastic materials. The Finite Element Method (FEM) has been used to make a tridimensional quasi-static model of a shaft that contains a concave shaped crack in its central section, subjected to rotary bending. Different rotation angles are taken into account in order to simulate the rotation of the shaft. The SIF is determined in every position of the front of the concave crack, for each crack geometry and for each rotation angle. Then an analytical model is developed using all the results of SIF obtained with the numerical model, and is verified comparing its results with solutions found in the literature. The proposed model may be very useful to study the dynamic behavior of shafts with concave shaped cracks, and can be employed to analyze the propagation of these types of cracks.
PB Elsevier Ltd.
SN 0013-7944
SN 1873-7315 (online)
YR 2019
FD 2019-06-01
LK https://hdl.handle.net/10016/35993
UL https://hdl.handle.net/10016/35993
LA eng
NO The authors would like to thank the Spanish Ministerio de Economía y Competitividad for the support for this work through the projects DPI2009-13264 and DPI2013-45406-P
DS e-Archivo
RD 30 jun. 2024