• 追加された行はこの色です。
• 削除された行はこの色です。
```|>|~第 277 回 Q-NA セミナー|
|日&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;時| 2011 年 10月 12日 (水) 15:30 - 17:00|
|場&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;所| 九州大学伊都キャンパス 総合学習プラザ1階 工学部第10講義室|
|講&nbsp;演&nbsp;者| Blaise Bourdin (Louisiana State University)|
|題&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;目| The variational approach to fracture: Theory, numerical implementation, and extension|
|概&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;要| This talk focusses on the the variational approach to fracture, devised by G.A. Francfort and J.-J. Marigo in 1998. In this approach, the quasi-static evolution of the deformation and crack configuration of a brittle solid is given by unilateral global minimization of a total energy consisting in the sum of the body's elastic energy and a crack surface energy proportional to its length (in 2d) or its area (in 3d). This problems falls in the broader category of free discontinuity problems. I will briefly present the model in the context of Griffith's
criterion, and give a few elements of analysis before focusing on it snumerical implementation. I will present a numerical approach based on elliptic regularization and illustrate it with numerical experiments. I will then present some extensions and applications to thermal
fracture, peeling, drying, and dynamic fracture.|
|備&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;考| お車でお越しの場合にはこの案内を印刷してご持参のうえ，入構の際に守衛所にてご掲示ください．|
|概&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;要| This talk focusses on the the variational approach to fracture, devised by G.A. Francfort and J.-J. Marigo in 1998. In this approach, the quasi-static evolution of the deformation and crack configuration of a brittle solid is given by unilateral global minimization of a total energy consisting in the sum of the body's elastic energy and a crack surface energy proportional to its length (in 2d) or its area (in 3d). This problems falls in the broader category of free discontinuity problems. I will briefly present the model in the context of Griffith's criterion, and give a few elements of analysis before focusing on it snumerical implementation. I will present a numerical approach based on elliptic regularization and illustrate it with numerical experiments. I will then present some extensions and applications to thermal fracture, peeling, drying, and dynamic fracture.|
|備&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;考| 通常とは曜日が異なりますのでご注意ください. お車でお越しの場合にはこの案内を印刷してご持参のうえ，入構の際に守衛所にてご掲示ください．|

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