Abstract
In order to study the compression property of curved three-dimensional(3D) flat-knitted spacer fabric composites and to provide experimental data for the study of subsequent low speed impact and residual strength, 3D flat-knitted spacer fabrics were knitted into flat and curvilinear shapes, then 3D flat-knitted spacer fabric composites curved in different angles were developed. Compression tests on various curvilinear composites were carried out using the universal material testing machine after which stress-strain curves are compared. The results revealed that when other experimental conditions are the same, the coursewise compression peak was significantly higher than waleswise, and compression peak also gradually increased with the increase of curvature, no matter the surface of 3D spacer fabric reinforced composites is flat or curvilinear. This research will lay the foundation for the further mechanical property study of curved 3D spacer fabric composites.
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