Crack propagation in largely deformed viscoelastic films

• Project/Area Number: 21540377
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Mathematical physics/Fundamental condensed matter physics
• Research Institution: Tohoku University
• Principal Investigator: HAYAKAWA Yoshinori 東北大学, 教育情報基盤センター, 教授 (20218556)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 破壊 / 大変形 / 亀裂 / 振動 / 粘性流体 / 粘弾性 / パターン形成 / ゴム薄膜 / 不安定性 / 薄膜

Research Abstract

We designed an experimental system of the crack of thin rubber films coupled with viscous fluid layer to realize slow fracture compared to sound propagation. We found a transition in the crack dynamics exhibiting oscillatory to straight patterns. Based on numerical simulations as well as experiments, we concluded that such oscillating patterns can not be explained within the framework of the conventional linear fracture mechanics and nonlinear elasticity due to largely deformation of rubber films is the essential factor.

Research Products

• [Journal Article] Model for Coiling and Meandering Instability of Viscous Threads (2009)
  • Author(s): S.Nagahiro, Y.Hayakawa
  • Journal Title: Journal of Physical Society of Japan 78 Pages: 124402-124402
  • NAID: 130005437178
  • Peer Reviewed
• [Journal Article] Oscillatory Instability in Slow Crack Propagation in Rubber under Large Deformation
  • Author(s): D. Endo, K. Sato, and Y. Hayakawa
  • Journal Title: to appear in Physical Review E
• [Presentation] Oscillatory Instability of Slow Crack Propagation in Rubbers under Large Deformation (2012)
  • Author(s): D. Endo
  • Organizer: The 4th International GCOE symposium on"Weaving Science Web beyond Particle-Matter Hierarchy"
  • Place of Presentation: Tohoku University, Sendai
• [Presentation] Crack patterns in nonlinear elastic films (2011)
  • Author(s): D. Endo
  • Organizer: The 3rd International GCOE symposium on"Weaving Science Web beyond Particle-Matter Hierarchy"
  • Place of Presentation: Tohoku University
• [Presentation] Oscillatory Instability of Slow Crack Propagation in Rubbers under Large Deformation (2011)
  • Author(s): D. Endo
  • Organizer: International Symposium on Complex Systems 2011
  • Place of Presentation: The University of Tokyo
• [Presentation] 散逸系での薄膜中の亀裂進展パターン (2010)
  • Author(s): 遠藤大樹、佐藤勝彦、早川美徳
  • Organizer: 日本物理学会
  • Place of Presentation: 大阪府立大学(大阪府)
  • Year and Date: 2010-09-26
• [Presentation] Crack propagation in largely deformed rubber sheet (2010)
  • Author(s): D. Endo
  • Organizer: The 2nd International GCOE symposium on"Weaving Science Web beyond Particle-Matter Hierarchy"
  • Place of Presentation: Tohoku University
• [Presentation] 散逸系での薄膜中の亀裂進展パターン, 大変形したゴム薄膜中に生じる亀裂進展パターン (2010)
  • Author(s): 遠藤大樹, 佐藤勝彦, 早川美徳
  • Organizer: 日本物理学会秋季大会, 電子情報通信学会非線形問題研究会
  • Place of Presentation: 大阪府立大学, 東北大学
• [Presentation] 衝撃破壊の統計則と多数亀裂のパターン形成 (2009)
  • Author(s): 早川美徳
  • Organizer: 日本物理学会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-27
• [Presentation] 大変形する薄膜中の亀裂進展パターン (2009)
  • Author(s): 遠藤大樹、早川美徳
  • Organizer: 日本物理学会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] 大変形する薄膜中の亀裂進展パターン (2009)
  • Author(s): 遠藤大樹, 早川美徳
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 熊本大学