Fingering instabilities in adhesive failure

被引:70
作者
Ben Amar, M
Bonn, D
机构
[1] Ecole Normale Super, Phys Stat Lab, F-75231 Paris, France
[2] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands
关键词
adhesion; instabilities; viscous fingering;
D O I
10.1016/j.physd.2005.07.002
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We study the fingering instabilities that occur in the debonding of model adhesives. We perform a linear analysis of the instability in the lifting Hele-Shaw cell, relevant for the failure of soft adhesives. The analysis is done for a Newtonian fluid but can be extended to shear-thinning fluids without any problem. When compared to experiment, significant differences are found between the linear theory and the experimental results. We therefore, discuss three-dimensional effects, that are found to improve the agreement; nevertheless significant differences between theory and experiment persist. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 16
页数:16
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