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Abstract

Experimental investigation is carried out to understand the bearing strength of stitched and unstitched uniweave T300/QY9512 laminates with single-lap single-bolt joint configuration in this article. The objectives of the studies are to determine the effects of stitching node position, stacking sequence, and hygrothermal environment on the bearing strength and the load–displacement curves of stitched laminates. A three-dimensional finite element model is also developed to investigate the bearing properties of mechanically fastened joints in unstitched and stitched laminates. Hashin's three-dimensional failure criterion is used to predict the progressive ply failure. The stitching node position effect is of primary interest. A good agreement between experimental results and numerical predictions is observed. The results show that the bearing strength decreased when the stitching node position was close to the hole boundary.

Keywords

bearing strength stitching node position single-lap single-bolt stitched laminates

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Bearing Strength Analysis of Single Mechanically Fastened Joint in Stitched Laminates

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