High Temperature Creep Damage Under Biaxial Loading—Part II: Model and Simulations

[+] Author and Article Information
F. Trivaudey, P. Delobelle

Laboratoire de Mécanique Appliquée - URA 279 CNRS, Faculté des Sciences et des Techniques, 25030 Besancon, Cedex, France

J. Eng. Mater. Technol 112(4), 450-455 (Oct 01, 1990) (6 pages) doi:10.1115/1.2903356 History: Received April 18, 1989; Revised December 28, 1989; Online April 29, 2008


The inadequacies, in describing the high temperature creep damage of two industrial alloys (Part I) with a model where the anisotropic damage variable D depends only on time have been pointed out. It is therefore proposed to introduce directly strain rate in the damage law. This rule is then integrated into a unified viscoplastic model, with internal variables, that has been developed elsewhere. Some numerical simulations obtained with the complete formulation are reported and, in general, yield acceptable results.

Copyright © 1990 by The American Society of Mechanical Engineers
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