Finite element analysis of creep using Theta projection data

Abstract

The Theta projection creep algorithm has been implemented within a finite element code. This extends the predictive capability of Theta projection data to complex geometries, multiple material problems such as welded joints, and non-steady temperature conditions. Validation of the finite element methodology has been undertaken by re-modelling creep data based on the original Theta coefficients. The stress redistribution in a cylindrical pressure vessel was examined and compared to that predicted by the Norton equation. The effects of temperature variation were also modelled. © 1998 Elsevier Science Ltd. All rights reserved.