TY - JFULL AU - A. Tavangari and N. Salehzadeh PY - 2014/10/ TI - Obtain the Stress Intensity Factor (SIF) in a Medium Containing a Penny-Shaped Crack by the Ritz Method T2 - International Journal of Mechanical and Mechatronics Engineering SP - 1595 EP - 1599 VL - 8 SN - 1307-6892 UR - https://publications.waset.org/pdf/9999365 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 93, 2014 N2 - In the crack growth analysis, the Stress Intensity Factor (SIF) is a fundamental prerequisite. In the present study, the mode I stress intensity factor (SIF) of three-dimensional penny- Shaped crack is obtained in an isotropic elastic cylindrical medium with arbitrary dimensions under arbitrary loading at the top of the cylinder, by the semi-analytical method based on the Rayleigh-Ritz method. This method that is based on minimizing the potential energy amount of the whole of the system, gives a very close results to the previous studies. Defining the displacements (elastic fields) by hypothetical functions in a defined coordinate system is the base of this research. So for creating the singularity conditions at the tip of the crack the appropriate terms should be found. ER -