TITLE:
Simulation of Fatigue Life Behavior of Circular Cross-Section Bar with Straight-Fronted Crack
AUTHORS:
Hamid Alihosseini, Kamran Dehghani, Ghader Faraji
KEYWORDS:
Simulation, Fatigue Life, Crack Shape
JOURNAL NAME:
Modeling and Numerical Simulation of Material Science,
Vol.4 No.3,
July
15,
2014
ABSTRACT: In this paper, fatigue life circular cross-section elastic bar under pure fatigue axial loading is studied through principles of linear elastic fracture mechanics (LEFM) coupled with the three-dimensional finite element technique for determination of critical crack size and residual lifetime. Three different initial notch depths are discussed. The relations between aspect ratio (b/c) and relative crack depth (b/D) are obtained, and it is shown that there is great difference in the growth of cracks with different front shapes and initial notch depths.