Closed form stress intensity factor of an arbitrarily located inner-surface circumferential crack in an edge-restraint cylinder under linear radial temperature distribution

摘要

Closed form stress intensity factor of an arbitrarily located inner-surface circumferential crack in an edge-restraint cylinder under linear radial temperature distribution was derived based on the theory of cylindrical shell and compliance. Theeffects of cylinder length, crack position and edge restraint on the stress intensity factor can be evaluated by the equation. According to the numerical examples of the equations, the stress intensity factor showed its maximum when the crack was locatedat the midpoint of its length, and a tendency to decrease as the crack length became larger than a specific value.