Journal of Materials Science

, Volume 27, Issue 23, pp 6341–6351 | Cite as

Finite element modelling of creep deformation in fibre-reinforced ceramic composites

  • Y. H. Park
  • J. W. Holmes


The tensile creep and creep-recovery behaviour of a unidirectional SiC fibre-Si3N4 matrix composite was analysed using finite element techniques. The analysis, based on the elastic and creep properties of each constituent, considered the influence of fibre-matrix bonding and processing-related residual stresses on creep and creep-recovery behaviour. Both two- and three-dimensional finite element models were used. Although both analyses predicted similar overall creep rates, three-dimensional stress analysis was required to obtain detailed information about the stress state in the vicinity of the fibre-matrix interface. The results of the analysis indicate that the tensile radial stress, which develops in the vicinity of the fibre-matrix interface after processing, rapidly decreases during the initial stages of creep. Both the predicted and experimental results for the composite show that 50% of the total creep strain which accumulated after 200 h at a stress of 200 MPa and temperature of 1200°C is recovered within 25 h of unloading.


Residual Stress Creep Rate Creep Strain Creep Deformation Creep Property 
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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • Y. H. Park
    • 1
  • J. W. Holmes
    • 1
  1. 1.Ceramic Composites Research Laboratory, Department of Mechanical Engineering and Applied MechanicsThe University of MichiganAnn ArborUSA

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