セミナー発足に際してのごあいさつ(1997.4)


|>|~第 277 回 Q-NA セミナー|
|日     時| 2011 年 10月 12日 (水) 15:30 - 17:00|
|場     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 演 者| Blaise Bourdin (Louisiana State University)|
|題     目| The variational approach to fracture: Theory, numerical implementation, and extension|
|概     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     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     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     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.|



世話人
田上 大助 (九州大学 マス・フォア・インダストリ研究所)
渡部 善隆 (九州大学 情報基盤研究開発センター)

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