Chapter 20. Finite Element Modeling of the Fiber Twist Test

  1. John B. Wachtman Jr.
  1. F. Gaudette,
  2. T. Erturk and
  3. S. Robertson

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314784.ch20

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5

How to Cite

Gaudette, F., Erturk, T. and Robertson, S. (1995) Finite Element Modeling of the Fiber Twist Test, in Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314784.ch20

Author Information

  1. University of Massachusetts Lowell, Lowell, Massachusetts 01854

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1995

ISBN Information

Print ISBN: 9780470375389

Online ISBN: 9780470314784

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Keywords:

  • combustion;
  • radiation;
  • corrosion;
  • exhausted;
  • velocity

Summary

The interface stresses in the fiber twist test (FTT) were computed using the ABAQUS finite element program. Both bonded and Coulomb friction interfaces were considered. For the perfectly bonded interface stress singularities were compared with an elasticity solution for the torsion of a fiber embedded in an elastic half space [1]. Fiber/matrix shear modulus ratios of Gf /Gm = 1-3 were considered. For the frictional interface the shear stress distribution along an unbonded interface having a radial compressive stress σrr and coefficient of friction μ was obtained. A simple shear-lag model was developed to compare with the numerical results.