An Equation for Stress Concentration Factor in Countersunk Holes
Kunigal N. Shivakumar; Anil Bhargava and Sameer Hamoush

doi:10.3970/cmc.2006.003.097
 Source CMC: Computers, Materials, & Continua, Vol. 3, No. 2, pp. 97-106, 2006 Download Full length paper in PDF format. Size = 330,292 bytes Keywords Abstract A detailed three-dimensional finite element stress analysis was conducted on straight-shank and countersunk rivet holes in a plate subjected to tension loading. The study included a wide range of plate width to radius, thickness to radius, countersunk depth to thickness ratios and countersunk angles(\textit {$\theta$}$_{c}$). The stress concentration is maximum at or near the countersunk edge. The stress concentration depends on countersunk depth, plate thickness and width and it is nearly independent of the countersunk angle for 80\r { }$\le$ \textit {$\theta$}$_{c } \le$ 120\r { }. Using the finite element results and limiting conditions, an equation for stress concentration factor is developed and verified.