A boundary element for crack analysis at a bimaterial interface
โ Scribed by W.J. He; J.E. Bolander Jr; D.S. Lin; H.J. Ding
- Book ID
- 107752626
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 414 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0013-7944
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The stress intensity factors for bimaterial interface cracks are determined by the boundary element method employing the multi-region technique and the double-point concept. A formula relating the stress intensity factors to the crack surface displacement, which is applicable to both the homogeneous
Inverse square root, l/x/7, singularity characterizes the stress field at the crack tip of homogeneous isotropic elastic media. This 1/x/7 singularity does not, however, hold for cracks present in inhomogeneous solids; such as, a crack terminating at a right angle to bimaterial interface, which is t
Zero thickness crack tip interface elements for a crack normal to the interface between two materials are presented. The elements are shown to have the desired r\*-' (0 < I < 1) singularity in the stress field at the crack tip and are compatible with other singular elements. The stiffness matrices o
A&dract--The complex stress intensity factor, K = Kt + i&t, which is used to chara~terixe the near tip fields of a bimaterial interface crack may atso be written as K = &ti, aud it has been shown that K, is directly related to the strain energy rele8se rate. An e&ient means of obtaining this quantit