Fatigue crack growth and failure of tubular members

Abstract

Fatigue crack growth and fatigue failure of tubular members subjected to both axial force and bending moments is investigated in the present paper. Initial semi-elliptical inside crack is assumed and the Paris equation is employed as the crack growth model. The stress intensity factor is determined through the influence function method. The net section failure criterion is adopted for the prediction of the member life. Numerical studies are worked out and the normalized S-N curves for a range of parameters are presented. © 1989.