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发表时间：2005-01-01

发表刊物：工程力学

期号：6

页面范围：82-86

ISSN号：1000-4750

摘要：The effects of four kinds of stitch parameters on the in-plane stiffness and strength of stitched composite laminates are investigated by both numerical calculation and experiments of 158 specimens in 37 groups. Results show that: (1) the greater the stitch density is, the greater the damage by stitch and the effect on in-plane stiffness and strength are. The maximum in-plane stiffness differences at several kinds of ordinary stitch density are 6%, 11% and 9% in longitudinal, transversal and shear directions, respectively. (2) The stitch density and perfection have great influences on the in-plane tension and shear strength. The maximum reductions of the in-plane tension and shear strengths resulting from stitching are 14% and 17%, respectively, while less than 4% reduction is gained for compression strength. (3) When the stitching threads go in the direction perpendicular to that of property measurement, higher in-plane stiffness and lower in-plane strength are achieved. Otherwise, when the stitching threads go in the direction parallel to that of property measurement, lower in-plane stiffness and higher in-plane strength result. The maximum differences of the in-plane stiffness and in-plane strength are 21% and 18%, respectively.

备注：新增回溯数据