Chapter 20. Finite Element Modeling of the Fiber Twist Test
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1995 The American Ceramic Society
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
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1995
Print ISBN: 9780470375389
Online ISBN: 9780470314784
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 . 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.