Open AccessPost-flambage unilatéral des films minces sur substrat
Author(s) -
Guillaume Parry,
Jérôme Colin,
C. Coupeau,
Alain Cimetière
Publication year - 2007
Publication title -
european journal of computational mechanics
Language(s) - English
Resource type - Journals
eISSN - 2642-2085
pISSN - 2642-2050
DOI - 10.13052/remn.16.941-955
Subject(s) - buckling , blisters , materials science , finite element method , thin film , composite material , stress (linguistics) , compression (physics) , critical load , structural engineering , nanotechnology , engineering , linguistics , philosophy
Various buckling equilibria can be observed on the delaminated areas of thin films. These equilibria are usually under advanced post-buckling. Results of the finite element analysis for the post-buckling equilibria of a thin film delaminated along a rectangular strip are discussed in this paper. Those results are compared with experimental observations performed with the help of an in-situ atomic force microscope coupled to a compression device which allows to vary the biaxial stress state in the film. The transitions from straightsided blisters to bubbles or telephone cord blisters are characterized. Both sub-critical and super-critical transitions are highlighted. A mapping of the various stable post-critical equilibria is given.