The strain energy density factor or .S-criterion [l] has been widely used in fracture mechanics and our work confnms that it can be used to explain the cracking behavior of a homogeneous, isotropic solid. However, it was found to be inadequate for some composite materials and a new hypothesis called
An energy based mode III fracture criterion for composites
โ Scribed by S.Q. Zhang; B.T. Valaire; J.C. Suhling; B.Z. Jang
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 490 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0013-7944
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โฆ Synopsis
In
this work, a new fracture hypothesis referred to as the Z-criterion is developed for mode III cracks in orthotropic composite materials. The new theory predicts critical crack propagation conditions and the crack propagation direction. The Z-criterion (Zhang et of., Engng
๐ SIMILAR VOLUMES
Furthermore, we have proved that the null space of the linear operator of Piola-Kirchhoff stress history functional is the direct sum of the null space of linear operators for 6-D vector subspace N, and N,. Here we can naturally classify the fracture of isotropic material with memory into two types.
Fracture behaviour of randomly oriented short glass fibre reinforced epoxy resin has been investigated. Fracture tests were conducted on single edge notched specimens and J integral evaluated using energy rate interpretation. Its value is found to be independent of crack length when crack length to