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Journal Articles Mechanics of Materials Year : 2002

Model of multilayered materials for interface stresses estimation and validation by finite element calculations

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Abstract

The mechanical problem discussed in this paper focuses on the stress state estimation in a composite laminate in the vicinity of a free edge or microcracks. To calculate these stresses, we use two models called Multiparticle Models of Multilayered Materials (M4). The first one can be considered as a stacking sequence of Reissner-Mindlin plates (5 kinematic fields per layer), while the second is a membranar superposition (2 fields per layer plus a global one). These simplified models are able to provide finite values of interfacial stresses, even on the free edges of a structure. The current paper consists of validating the M4 by a finite element analysis through describing the stress fields in both a (0,90)s laminate in tension (free-edge problem) and a transversally microcracked (0,90)s laminate. A comparison of the various energy contributions helps yield a mechanical perspective: it appears possible to define an interply energy as well as a layer energy, these energies expressing the FE 3D reality.
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Dates and versions

hal-00401790 , version 1 (06-07-2009)

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Rui Pedro Carreira, Jean-François Caron, Alberto Diaz Diaz. Model of multilayered materials for interface stresses estimation and validation by finite element calculations. Mechanics of Materials, 2002, 34 (4), pp.217-230. ⟨hal-00401790⟩
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