Vol.17, No.2, 2017, pp.151–156
UDC  539.422:519.673

FATIGUE LIFE ESTIMATION OF CCT SPECIMEN USING XFEM

Khalid Ahmed Eldwaib1, Aleksandar Grbović1, Gordana Kastratović2, Dorin Radu3, Simon Sedmak4

1)University of Belgrade, Faculty of Mechanical Engineering, Serbia agrbovic@mas.bg.ac.rs

2)University of Belgrade, Faculty of Transport and Traffic Engineering, Serbia

3)University of Brasov, Faculty of Civil Engineering, Romania

4)University of Belgrade, Innov. Centre of Faculty of Mech. Engng., Belgrade, Serbia

Abstract

In this study a central crack tension (CCT) specimen is chosen for analysis to demonstrate the capability and reliability of the extended finite element method (XFEM) in predicting the crack propagation trajectory and evaluating stress intensity factors (SIFs). This specimen is frequently used in fatigue tests for studying various effects on fatigue crack propagation and for obtaining crack growth properties of a material. The XFEM obtained SIFs solutions are compared with several well-known solutions from literature. Evaluation of fatigue life of the CCT specimen is also carried out and compared with the obtained by NASGRO.

Keywords: stress intensity factor (SIF), fatigue life estimation, XFEM

full article (1045 KB)