Deformation instabilities in a thin plastic film on an elastic substrate due to strain mismatch

作者: Jean-Claude Ramirez

DOI: 10.1016/0020-7683(89)90026-7

关键词: Materials sciencePlastic filmLinear elasticityInstabilityBifurcationComposite materialDeformation (engineering)Substrate (electronics)Thin filmStress (mechanics)Optics

摘要: Abstract A model is constructed of a thin film rigid-plastic material bonded to linear elastic substrate subject state mismatch strain between the two materials. The purpose study investigate existence deformation localization in that periodic along direction bi-material interface. Bifurcation phenomena could be possible precursor debonding phenomena. conditions necessary for these undulations appear are given by bifurcation equation which relates internal stress relative stiffness and thickness film.

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