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Rotational interface formulation for delamination analysis of composite laminates

✍ Scribed by N.E. Jansson; R. Larsson

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
420 KB
Volume
81
Category
Article
ISSN
0045-7949

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✦ Synopsis

In this paper, delamination progression in a composite laminate is modelled by interface elements within a geometrically non-linear FE analysis setting. With the assumption of small continuum deformations, a rotational interface formulation is obtained from a recently proposed formulation based on the concept of a regularised strong discontinuity, cf. [Int. J. Numer. Meth. Eng. 54 (2002) 473]. The degradation of the stress vector in the cohesive zone is described by a damage-plasticity coupling, which is calibrated analytically against experimental data of mixed-mode fracture energies. The paper is concluded by a couple of numerical examples that describe the predictive capabilities of the interface formulation.

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