It is assumed that near the end the cylinder contains an axial flow which may be modeled as a part-through surface crack or through crack. In this paper a cylindrical shell having a very stiff end plate or a flange is considered.
Dynamic finite element analysis of the rupturing cylinder showed that the crack kinked and also ran straight in the presence of a mixed mode state according to a modified two-parameter crack kinking criterion.Ī pressurized cylindrical shell with a fixed end which contains an axial part-through or through crack The diagonally running crack further turned at the tear straps. Upon pressurization, rapid crack propagation initiated at an axial through crack along the stringer and immediately kinked due to the mixed modes 1 and 2 state caused by the one-sided opening of the crack flap. The crack arrest capability of a tear strap in a pressurized precracked fuselage was studied through instrumented axial rupture tests of small scale models of an idealized fuselage. Axial crack propagation and arrest in pressurized fuselage
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