للكاتبين :
M.M.I. Hammouda1, A.A. Abdel-Alhady2, A.S. Fayedc, H.E.M. Sallam3
1 Mechanical Eng. Dept., University of Engineering and Technology, Taxila, Pakistan
2 Mechanical Design Department, Mataria, Helwan University, Cairo, Egypt.
3 Materials Engineering Department, Zagazig University, Zagazig, Egypt
ABSTRACT
2-D elastic-plastic finite element analysis was utilized to simulate cyclic crack tip deformation of
short cracks emanating from elliptical oblique notches. The analysis was carried out on a single
edge notch plate under constant amplitude loading at zero stress-ratio. Different notch geometries
were tested in this investigation. The extents of monotonic and cyclic crack tip plastically
deformed zone and near tip-relative displacement were of interest during crack extension. Both
Stationary and artificially advancing cracks from the elliptical oblique edge notch were analysed
and compared in terms of plastically deformed zones and crack tip relative displacement. PVC
plates having the same edge elliptical oblique edge notches were tested experimentally under
static loading to show the shape of plastic deformation and site of crack initiation on the notch
surface.