EXPERIMENT AND SIMULATION STUDY ON THE EFFECT OF Z-PIN REINFORCED ON THE PULL-OFF AND SHEAR CARRYING CAPACITY OF FIBER PLACEMENT COMPOSITE T-JOINTS
LIU Ji
XU XiWu
Abstract：This article presents an experiment and simulation study on the effect of Z-pin reinforced on the pull-off and sheat carrying capacity of fiber placement composite T-joints,we used CMT5504 to conduct the pull-off test meanwhile we used MTS to conduct the shear test.we studied Z-pin reinforced And non-reinforced test-pieces,drawing Load-displacement curves.The pull-off test results donate that Z-pin can effectively improved the pull-off carrying capacity of T-joints and slow the decrease of the load significantly after pick loading compared to the non-reinforced T-joints.The failure location is between stiffener and interlayer.The shear test results donate that Z-pin can effectively improve the shear carrying capacity of T-joints.The failure location of Z-pin reinforced test is between skin and interlayer and the failure location of non-reinforced test is bwtween stiffener and interlayer.On this basis,we created pull-off and shear model of T-joint specimens.The interface failure was simulated with cohesive zone model,and the effect of Z-pin was simulated with nonlinear springs inserted into the interface.The numerical results agree well with the test data and shows that the model is effective.
Keywords：Fiber placement compositeT-jointZ-pinNumerical simulation
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 527-533 )