Numerical analysis of cylinders containing circular offset cross-bores

Three-dimensional finite element analyses were performed for closed ended thick-walled cylinders with a cross-bore under internal pressure. Cylinders having circular cross-bores, at radial and offset positions from the radial line, were investigated. Cross-bore diameter size effects on the principal stress distribution as well as the stress concentration factors along the plain cross-bores were also investigated. The results show a dependency of the stress distributions, as well as the stress concentration factor on cross-bore diameter size. The stress concentration factor in the radial cross-bore cylinders approaches 1.73 times that in the 11.2 mm offset position. (C) 1998 Elsevier Science Ltd. All rights reserved.