Fracture analyses on the all-metal cylinders and the metal-lined hoop-wrapped cylinders with axial cracks

The objective of this paper is to report on the research about the effects of the cylinder materials, the hoop-wrap materials and the crack size on al l-metal cylinders and metal-lined cylinders with axially oriented internal cracks through comparisons of the fracture behaviors between the all-metal cylinders and the metal-lined hoop-wrapped cylinders. The three-dimensional finite element methods were used to model these different cylinders. The d ifferent fracture behaviors of these cylinders are presented by comparing t he calculated normalized stress intensity factors and the crack-tip opening displacements of these cylinders, The effects of the crack sizes, the cyli nder materials and the hoop-wrap materials on the crack driving forces are studied and discussed, (C) 1999 Elsevier Science Ltd. All rights reserved.