Chapter 8. Some Considerations for Modeling the Creep Behavior of Composite Materials

  1. John B. Wachtman Jr.
  1. Edgar Lara-Curzio and
  2. Mattison K. Ferber

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314500.ch8

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4

How to Cite

Lara-Curzio, E. and Ferber, M. K. (1994) Some Considerations for Modeling the Creep Behavior of Composite Materials, in Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314500.ch8

Author Information

  1. Metals and Ceramics Division Oak Ridge National Laboratory Oak Ridge, TN 37831 -6064

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375327

Online ISBN: 9780470314500

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Keywords:

  • pseudo-constitutive;
  • dimensional;
  • re-distribution;
  • pseudo-constitutive

Summary

A simple treatment of the mechanics of creep in unidirectional composites is presented with the objective of stressing the need for using appropriate constitutive equations when modeling the behavior of the constituents. It is demonstrated that pseudo-constitutive relations, such as those obtained from constant stress creep experiments for example, can not be used to describe the mechanical behavior of the constituents when modeling the creep of composites. By describing the mechanical behavior of the composite constituents using linear viscoelastic models, an analysis is presented to assess the type of errors which are incurred when inappropriate constitutive relations are used. Other considerations for modeling the creep behavior of ceramic matrix composites are discussed.