کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
776605 1463471 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Debonding of confined elastomeric layer using cohesive zone model
ترجمه فارسی عنوان
تخلخل لایه الاستومری محدود شده با استفاده از مدل منطقه محصور شده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی

Wavy or undulatory debonding is often observed when a confined/sandwiched elastomeric layer is pulled off from a stiff adherend. Here we analyze this debonding phenomenon using a cohesive zone model (CZM). Using stability analysis of linear equations governing plane strain quasi-static deformations of an elastomer, we find (i) a non-dimensional number relating the elastomer layer thickness, h  , the long term Young׳s modulus, E∞E∞, of the interlayer material, the peak traction, TcTc, in the CZM bilinear traction-separation (TS) relation, and the fracture energy, GcGc, of the interface between the adherend and the elastomer layer, and (ii) the critical value of this number that provides a necessary condition for undulations to occur during debonding. For the elastomer modeled as a linear viscoelastic material with the shear modulus given by a Prony series and a rate-independent bilinear TS relation in the CZM, the stability analysis predicts that a necessary condition for a wavy solution is that Tc2h/GcE∞Tc2h/GcE∞ exceed 4.154.15. This is supported by numerically solving governing equations by the finite element method (FEM). Lastly, we use the FEM to study three-dimensional deformations of the peeling (induced by an edge displacement) of a flexible plate from a thin elastomeric layer perfectly bonded to a rigid substrate. These simulations predict progressive debonding with a fingerlike front for sufficiently confined interlayers when the TS parameters satisfy a constraint similar to that found from the stability analysis of the plane strain problem.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Adhesion and Adhesives - Volume 66, April 2016, Pages 114–127
نویسندگان
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