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Experimental and Numerical Study on Mechanical Properties of Z-pins Reinforced Composites Adhesively Bonded Single-Lap Joints

Yinhuan Yang1,*, Manfeng Gong1, Xiaoqun Xia1, Linzhi Wu2,3

1 School of Electromechanical Engineering, Lingnan Normal University, Zhanjiang, 524048, China
2 Key Laboratory of Advanced Ship Materials and Mechanics, Harbin Engineering University, Harbin, 150001, China
3 Department of Engineering Mechanics, College of Aerospace and Civil Engineering University, Harbin, 150001, China

* Corresponding Author: Yinhuan Yang. Email:

(This article belongs to this Special Issue: Mechanics of Composite Materials and Structures)

Computer Modeling in Engineering & Sciences 2022, 131(1), 365-378.


The mechanical properties of Z-pins reinforced composites adhesively bonded single-lap joints (SLJs) under un-directional tension loading are investigated by experimental and numerical methods. Three kinds of joint configurations, including SLJs with three/two rows of Z-pins and “I” array of Z-pins, are investigated by tension test. The failure modes and mechanism of reinforced joints with different Z-pins numbers and alignment are analyzed, and the comparison is performed for the failure strengths of no Z-pins and Z-pins reinforced joints. According to experimental results, failure modes of three kinds of joints are all mixed failure. It turns out that the Z-pins are pulled out ultimately. The strength of joints of more Z-pins at the end of the overlap area is relatively bigger for the joint of the same Z-pins numbers. The strength of joints with Z-pins compared with non Z-pins joints is growing at 16%. Finally, the three-dimensional distribution of interfacial stress in the lap zone of three kinds of Z-pins reinforced joints is simulated, and the numerical results are in good agreement with the experimental results. It is effective that the numerical calculation of stress analysis is verified.


Cite This Article

Yang, Y., Gong, M., Xia, X., Wu, L. (2022). Experimental and Numerical Study on Mechanical Properties of Z-pins Reinforced Composites Adhesively Bonded Single-Lap Joints. CMES-Computer Modeling in Engineering & Sciences, 131(1), 365–378.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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