Influence of Z-Pinning on the Buckling of Composite Laminates under Edge-Wise Compression

Abstract:

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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.

Info:

Periodical:

Edited by:

Hong-Yuan Liu, Xiaozhi Hu and Mark Hoffman

Pages:

127-132

DOI:

10.4028/www.scientific.net/KEM.312.127

Citation:

W. Y. Yan and H. Y. Liu, "Influence of Z-Pinning on the Buckling of Composite Laminates under Edge-Wise Compression", Key Engineering Materials, Vol. 312, pp. 127-132, 2006

Online since:

June 2006

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$35.00

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