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Influence of z-pinning on the buckling of composite laminates under edge-wise compression

journal contribution
posted on 2006-01-01, 00:00 authored by W Yan, H Liu
Z-pinning is a newly developed technique to enhance the strength of composite laminates in the thickness direction. Recent experimental and theoretical studies have shown that z-pins significantly improve mode I and mode II fracture toughness. In practice, buckling accompanying delamination is a typical failure mode in laminated composite structures. For a complete understanding of the z-pinning technique towards improvements of the overall mechanical properties of laminated composites, a numerical model is developed in this paper to investigate the influence of z-pins on the buckling composite laminates with initial delaminations under edge-wise compression. The numerical results indicate that z-pinning can indeed effectively increase the compressive strength of the composite laminates provided that the initial imperfection is within a certain range. The magnitude of the improvement is consistent with available experimental data.

History

Journal

Key engineering materials

Volume

312

Pagination

127 - 132

Publisher

Trans Tech Publications

Location

Aedermannsdorf, Switzerland

ISSN

1013-9826

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

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