Tensile experiments on the tooth connections with filament winding between GFRP tube and aluminum alloy tube

In order to obtain a new way of connection between composite material and aluminum-alloy, the tooth connection between GFRP tube and aluminum-alloy tube with filament winding was proposed. The tensile experiments on two-group specimens of the tooth connect between GFRP tube and aluminum alloy tubes were conducted. The failure model, load-displacement relationship and load-axial strain relationship were documented during the loading process. The failure mechanism of the tooth connection between GFRP tube and aluminum-alloy tube subject to tension was numerically explored. The results show that the failure model for specimen of the connection is one-by-one shear failure of GFRP tube teeth, the failure process appears the ductility feature and larger axial displacement, and the average ultimate tensile stress of GFRP tube is 213.22 MPa; the connection carries the axial force through interlaminar shear of the teeth, the teeth of GFRP tube is the weak part when the connection was stressed and different teeth endure different load distribution; the failure of teeth originate from the angular point of the root of teeth.