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Micromechanical predictions of crack propagation and fracture energy in a single fiber boron/aluminum model composite
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mahishi, J. M. Adams, D. F. |
| Copyright Year | 1982 |
| Description | The axisymmetric finite element model and associated computer program developed for the analysis of crack propagation in a composite consisting of a single broken fiber in an annular sheath of matrix material was extended to include a constant displacement boundary condition during an increment of crack propagation. The constant displacement condition permits the growth of a stable crack, as opposed to the catastropic failure in an earlier version. The finite element model was refined to respond more accurately to the high stresses and steep stress gradients near the broken fiber end. The accuracy and effectiveness of the conventional constant strain axisymmetric element for crack problems was established by solving the classical problem of a penny-shaped crack in a thick cylindrical rod under axial tension. The stress intensity factors predicted by the present finite element model are compared with existing continuum results. |
| File Size | 3798483 |
| Page Count | 67 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820010452 |
| Archival Resource Key | ark:/13960/t3227r091 |
| Language | English |
| Publisher Date | 1982-02-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Boron Fibers Finite Element Method Fracture Mechanics Aluminum Boron Composites Energy Dissipation Plane Strain Metal Matrix Composites Mathematical Models 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 |
