FINITE ELEMENT IMPLEMENTATION OF CREEP CONSTITUTIVE MODEL INCLUDING TRANSIENT EFFECTS

Abstract

: A complex creep constitutive model including transient effects was implemented in the finite element code PMD (Package for Machine Design). The material model for P-91-type creep-resistant steel together with computer implementation was verified by means of uniaxial stress loadings. Testing bar was discretized by the finite element method (FEM) and loaded with uniaxial stresses and constant temperatures that were used to demonstrate the analytical solutions in original paper.