NUMERICAL-ANALYSIS OF STRESSES AT OBLIQUE HOLES IN PLATES SUBJECTED TO TENSION AND BENDING

Stress analysis of a series of thick, wide, flat plates with oblique h oles subjected to uniaxial tension and out-of-plane bending has been c arried out using the finite element method (FEM), and in some cases th e boundary element method (BEM). Different plate thickness-hole diamet er ratios, angles of hole obliquity and orientation have been consider ed to provide stress concentration factors at such holes. The work cov ers plate thickness-hole diameter ratios from 1.3 to 3.0, hole obliqui ty angles from 0 to 60 degrees and orientation of the major axis of th e surface ellipse relative to the applied load direction of 9 to 90 de grees. The results for uniaxial tension have been compared with those determined using the photoelastic frozen-stress technique in order to verify the finite element models before proceeding to the bending case s, which provide new data.