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Fracture and crack growth in orthotropic laminates (Document No: 19790003978)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gross, R. S. Goree, J. G. |
| Copyright Year | 1978 |
| Description | An approximate solution is developed for the determination of the interlaminar normal and shear stresses in the vicinity of a crack in a three dimensional composite containing unidirectional linearly elastic fibers in an infinite linearly elastic matrix. In order to reduce the complexity of the formulation, certain assumptions are made as to the physically significant stresses to be retained. These simplifications reduce the partial differential equations of elasticity to differential-difference equations which are tractable using Fourier transform techniques. The potential for damaged or debonded zones to be generated by an embedded crack is discussed, and stress concentration factors for fibers near the crack are given. Detailed comparisons are made between the present solution, the analogous two dimensional problem, and corresponding shear-lag models. |
| File Size | 2992615 |
| Page Count | 50 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790003978 |
| Archival Resource Key | ark:/13960/t7np6vv1t |
| Language | English |
| Publisher Date | 1978-10-15 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Elastic Media Orthotropism Fracture Mechanics Numerical Analysis Approximation Differential Equations Shear Stress Layers Crack Propagation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
