| タイトル | Failure analysis of composite laminates with free edges |
| 著者（英） | Nagarkar, A.; Herakovich, C. T.; Obrien, D. A. |
| 著者所属（英） | Virginia Polytechnic Inst. and State Univ. |
| 発行日 | 1979-01-01 |
| 言語 | eng |
| 内容記述 | Linear elastic stress distributions obtained from a refined finite element mesh are used in conjunction with the tensor polynomial failure criterion to predict the initiation of failure in symmetric, finite-width graphite-epoxy laminates under tensile loading. Results are presented for a wide variety of laminates including: (+ and - theta)s angle-ply; cross-ply (0/90)s and (90/0)s; and quasi-isotropic (90/0/+ and - 45)s and (+ and -45/0/90)s. It is shown that the elastic stress distributions generally compare favorably with other published results, but also indicate improved satisfaction of the stress-free boundary conditions and indicate some differences in the singular behavior of selected stress components at the free edge. The tensor polynomial failure criterion is used to predict the location and mode of first failure. Examination of the individual terms of the polynomial indicates different modes of failure depending upon the laminate configuration. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 80A27983 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/422361 |
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