Theoretical development and applications for swelling-induced buckling analysis of gels

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560096
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Nagoya University
• Principal Investigator: OKUMURA Dai 名古屋大学, 工学(系)研究科(研究院), 准教授 (70362283)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ゲル / 膨潤 / 座屈 / 不安定 / 有限要素

Outline of Final Research Achievements

In this study, we performed finite element analysis of swelling-induced pattern transformation of gel films with a square lattice of holes, to simulate diamond plate patterns observed in experiments and then to explain the mechanism and the dependence on prestrains. We used an inhomogeneous field theory for polymeric gels in finite element analysis. It was found that buckling to form diamond plate patterns starts locally and then propagates until homogeneous transformation is achieved. It was further found that prestrains in tension delays the onset of pattern transformation and different patterns appear as transitional states during the transformation.

Free Research Field

計算固体力学