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A Numerical Study of the Compression and Shear Failure of Woven Carbon-Carbon Laminates
- Source :
- Journal of Composite Materials. 29:2446-2463
- Publication Year :
- 1995
- Publisher :
- SAGE Publications, 1995.
-
Abstract
- A finite element analysis was performed to determine the influence of microstructural inhomogeneities on the compressive and shear strength of 2-D carbon-carbon laminates. In particular, the effects of amplitude and distribution of the fiber bundle crimps, and lengths and distribution of the interply and transverse bundle cracks are determined. The results of the numerical study are successfully compared with experimental observations made in an earlier study under compression and shear loading. Under a warp-aligned compression load, the local material parameter which controls the overall instability in the form of multiple interply delaminations is the critical energy release rate for growth of pre-existing interply cracks, except for when the maximum length of these cracks is less than 0.6 mm when the failure is through bundle kink-induced shear faulting. For all pre-existing crack lengths, the same parameter was responsible for initiating a planar shear fault following the crimp boundaries under an interlaminar shear loading. Accordingly, the numerical cell-model considered here conforms to the above mechanism by allowing the participation of the energy release rate as the failure parameter.
- Subjects :
- Strain energy release rate
Materials science
Mechanical Engineering
Delamination
Fracture mechanics
02 engineering and technology
021001 nanoscience & nanotechnology
Finite element method
020303 mechanical engineering & transports
0203 mechanical engineering
Shear (geology)
Mechanics of Materials
Bundle
Materials Chemistry
Ceramics and Composites
Crimp
Shear strength
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 1530793X and 00219983
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- Journal of Composite Materials
- Accession number :
- edsair.doi...........a1aacfc6b8ba4adaa00da13c5613c4a6