T-shaped crack problem for bonded orthotropic layers

Date

1994-06-01

Author

Erdogan, F.
Kadıoğlu, Fevzi Suat

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The plane elasticity problem of two perfectly bonded orthotropic layers containing cracks perpendicular to and along the interface is considered. Cracks are extended to intersect the boundaries and each other in such a way that a crack configuration suitable to study the T-shaped crack problem is obtained. The problem is reduced to the solution of a system of singular integral equations with Cauchy type singularities. Numerical results for stress intensity factors and energy release rates are presented for various loading conditions and for isotropic as well as orthotropic material pairs. These results indicate that elementary strength of material type calculations for energy release rates provide a good approximation to the actual elasticity solution even for relatively short cracks, as long as the layer thicknesses are not very different.

Subject Keywords

Stress intensity factors, Interface crack, Elastic layers, Fracture-mechanics, Laminated plates

URI

https://hdl.handle.net/11511/41716

Collections

Department of Mechanical Engineering, Article