| タイトル | Turbine blade nonlinear structural and life analysis |
| 著者（英） | Laflen, J. H.; Kaufman, A.; Halford, G. R.; Mcknight, R. L. |
| 著者所属（英） | General Electric Co.|NASA Lewis Research Center |
| 発行日 | 1982-06-01 |
| 言語 | eng |
| 内容記述 | The utility of advanced structural analysis and life prediction techniques was evaluated for the life assessment of a commercial air-cooled turbine blade with a history of tip cracking. Three dimensional, nonlinear finite element structural analyses were performed for the blade tip region. The computed strain-temperature history of the critical location was imposed on a uniaxial strain controlled test specimen to evaluate the validity of the structural analysis method. Experimental results indicated higher peak stresses and greater stress relaxation than the analytical predictions. Life predictions using the Strainrange Partitioning and Frequency Modified approaches predicted 1200 to 4420 cycles and 2700 cycles to crack initiation, respectively, compared to an observed life of 3000 cycles. |
| NASA分類 | AIRCRAFT PROPULSION AND POWER |
| レポートNO | 82A34981
AIAA PAPER 82-1056 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/410224 |
