RT info:eu-repo/semantics/article
T1 Stress-intensity factor solutions for embedded elliptical cracks in round bars subjected to tensile load
A1 Alegre Calderón, Jesús Manuel
A1 Cuesta Segura, Isidoro Iván
A1 Díaz Portugal, Andrés
K1 Stress-intensity factor (SIF)
K1 Round bar
K1 Embedded elliptical cracks
K1 Fatigue crack growth
K1 Recategorization of flaws
K1 Internal defects
K1 Fisheye
K1 Resistencia de materiales
K1 Strength of materials
K1 Ingeniería civil
K1 Civil engineering
AB In this paper, stress-intensity factor solutions are presented for an embedded elliptical crack in a round bar subjected to tensile load. The stress-intensity factors (SIF) are presented in a tabulated form and were obtained from three-dimensional finite-element analyses of this crack configuration. The solutions provide the stress-intensity factor as a function of three dimensionless parameters representative of the crack size, the crack aspect ratio of the elliptical flaw and its relative position in the cross section. The dimensionless parameters cover ranges that allow most internal flaw shapes in practice to be considered. In order to validate the numerical model developed, some particular cases are compared with solutions of embedded elliptical flaws in different geometries available in the literature. Afterwards, a sequential methodology for fatigue crack growth is presented, including the conditions for the recategorization from the internal elliptical crack to a semi-elliptical surface crack. A comparison of the predicted crack paths with experimental results of fatigue crack propagation initiated from internal defects in round bars is also presented. This experimental validation shows the capability of the proposed SIF solutions for the study of the fatigue crack propagation initiated from internal defects in this geometry.
PB Elsevier
SN 0167-8442
YR 2022
FD 2022-02
LK http://hdl.handle.net/10259/6380
UL http://hdl.handle.net/10259/6380
LA eng
NO JCyL project reference BU-002-P20, co-financed with FEDER funds.
DS Repositorio Institucional de la Universidad de Burgos
RD 26-abr-2024