Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 67, Issue 3-4, Pages 662-668Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2006.05.007
Keywords
crack; delamination; mixed-mode bending
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This paper addresses the analytical solution of the mixed-mode bending (MMB) problem. The first published solutions used a load separation in pure mode I and mode II and were applied for a crack length less than the beam half-span, a <= L. In later publications, the same mode separation was used in deriving the analytical solution for crack lengths bigger than the beam half-span, a > L. In this paper it is shown that this mode separation is not valid when a > L and in some cases may lead to very erroneous results. The correct mode separation and the corresponding analytical solutions, when a > L, are presented. Results, of force vs. displacement and force vs. crack length graphs, obtained using the existing formulation and the corrected formulation are compared. A finite element solution, which does not use mode separation, is also presented. (c) 2006 Elsevier Ltd. All rights reserved.
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