Finite Element Creep Continuum Damage Mechanics Analysis of Pressurised Pipe Bends with Ovality

Abstract

This paper is concerned with the creep analysis of pressurised pipe bends in which ovality of the circular cross-section is considered. A creep continuum damage mechanics analysis is performed using the Finite Element method. The failure times and failure positions are predicted and compared to steady-state creep solutions. A comparison of the two solutions shows that the steady-state creep solutions for failure times are conservative compared to the damage solutions.