Effect of fiber orientation on high-speed impact resistance of TC4/PEEK/Cf laminates
TENG Wei1,GAO Lixin2,3,YUAN Xiaosa4,WANG Menglin1,XUE Pengbo1,WU Yanbing1,PAN Lei1
1.College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;
2.College of Marxism,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;
3.Aecc Commerclal Aircraft Engine Co.,Ltd.,Shanghai 200241,China;
4.Avic Xi’an Aircraft Industry Group Company Ltd.,Xi’an 710089,China)
Abstract：In order to study the failure behavior and mechanism of the laminates under high speed impact condition, the influence of fiber orientation on the high speed impact resistance of the laminate was explored by using air cannon high speed impact test, and the finite element model with effective error control was established. The model verified by optimization is used to calculate the impact test of the laminates with different variables. The experimental and simulation results show that the main damage modes of TC4/PEEK/Cf laminates under high speed impact are metal/composite interface delamination, internal lamination of composite, plastic deformation of metal and tearing and disconnecting of composite materials. By comparing the characteristics of high-speed impact failure of TC4/PEEK/Cf laminates with different fiber orientations, it is found that the high-speed impact resistance of TC4/PEEK/Cf laminates is related to the fiber placement angle. The impact energy dissipation performance of the laminates increases with the increase of the cross angle of the fibers, the ballistic limit and energy dissipation rate of fiber one-way laminates are the lowest, the ballistic limit and energy dissipation rate of 0°/90° fiber oriented laminates are the highest, and the impact resistance is the best.
Key words: TC4/PEEK/Cf laminatest; nonlinear finite element numerical simulation;
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