| タイトル | Finite element thermo-viscoplastic analysis of aerospace structures |
| 本文（外部サイト） | http://hdl.handle.net/2060/19910007094 |
| 著者（英） | Dechaumphai, Pramote; Pandey, Ajay K.; Thornton, Earl A. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1990-11-01 |
| 言語 | eng |
| 内容記述 | The time-dependent thermo-viscoplastic response of aerospace structures subjected to intense aerothermal loads is predicted using the finite-element method. The finite-element analysis uses the Bodner-Partom unified viscoplastic constitutive relations to determine rate-dependent nonlinear material behavior. The methodology is verified by comparison with experimental data and other numerical results for a uniaxially-loaded bar. The method is then used (1) to predict the structural response of a rectangular plate subjected to line heating along a centerline, and (2) to predict the thermal-structural response of a convectively-cooled engine cowl leading edge subjected to aerodynamic shock-shock interference heating. Compared to linear elastic analysis, the viscoplastic analysis results in lower peak stresses and regions of plastic deformations. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 91N16407
NASA-TM-102761
NAS 1.15:102761 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/134468 |
