| タイトル | Mixed-Mode Decohesion Finite Elements for the Simulation of Delamination in Composite Materials |
| 本文（外部サイト） | http://hdl.handle.net/2060/20020053651 |
| 著者（英） | Camanho, Pedro P.; Davila, Carlos G. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2002-06-01 |
| 言語 | eng |
| 内容記述 | A new decohesion element with mixed-mode capability is proposed and demonstrated. The element is used at the interface between solid finite elements to model the initiation and non-self-similar growth of delaminations. A single relative displacement-based damage parameter is applied in a softening law to track the damage state of the interface and to prevent the restoration of the cohesive state during unloading. The softening law for mixed-mode delamination propagation can be applied to any mode interaction criterion such as the two-parameter power law or the three-parameter Benzeggagh-Kenane criterion. To demonstrate the accuracy of the predictions and the irreversibility capability of the constitutive law, steady-state delamination growth is simulated for quasistatic loading-unloading cycles of various single mode and mixed-mode delamination test specimens. |
| NASA分類 | Structural Mechanics |
| レポートNO | NASA/TM-2002-211737
NAS 1.15:211737
L-18194 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/91483 |
