| タイトル | Viscous Effects in the Elastodynamics of Thick Beams |
| 本文（外部サイト） | http://hdl.handle.net/2060/20040110396 |
| 著者（英） | Johnson, A. R.; Tessler, A. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1997-01-01 |
| 言語 | eng |
| 内容記述 | A viscoelastic higher-order thick beam finite element formulation is extended to include elastodynamic deformations. The material constitutive law is a special differential form of the Maxwell solid. In the constitutive model, the elastic strains and the conjugate viscous strains are coupled through a system of first- order ordinary differential equations. The total time-dependent stress is the superposition of its elastic and viscous components. The elastodynamic equations of motion are derived from the virtual work principle. Computational examples are carried out for a thick orthotropic cantilevered beam. A quasi-static relaxation problem is employed as a validation test for the elastodynamic algorithm. The elastodynamic code is demonstrated by analyzing the damped vibrations of the beam which is deformed and then released to freely vibrate. |
| NASA分類 | Structural Mechanics |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/88176 |
