A shear-resistant composite tooth-shaped connecting structure and a test fixture

Abstract

This application discloses a shear-resistant composite toothed connection structure and test fixture, belonging to the field of composite material structure technology. The connection structure is made of unidirectional composite material tape or fabric and includes: a clamping area, a transition area, and a toothed connection area arranged sequentially along the axial direction. The toothed connection area has multiple levels of shear teeth, with the tooth height of the multiple levels of shear teeth gradient distribution from large to small along the axial direction. The shear teeth are designed with smaller tooth height and tooth root width to reduce the shear contact area of ​​a single tooth. This shear-resistant composite toothed connection structure and test fixture ensures the tensile strength of the toothed connection structure specimen and guarantees that failure occurs at the tooth root shear surface.

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