Journal of Shanghai Jiaotong University ›› 2016, Vol. 50 ›› Issue (02): 169-175.

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Numerical Analysis of Reinforcement Effect of Z-Pins withSpecial-Shaped CrossSection Under Mode I Delamination

JIN Zhuyu,ZHANG Xiaojing   

  1. (School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2014-11-14 Online:2016-02-29 Published:2016-02-29

Abstract: Numerical Analysis of Reinforcement Effect of ZPins with Abstract: A 3D finite element model was proposed to simulate a single Zpin for pullout test and for unpinned/Zpinned double cantilever beam (DCB) test. Static and sliding friction coefficients were used to simulate the debonding and pullout process of the Zpin. Connectors were used in the DCB model to simulate the bridging effect of the Zpins with the bridging curves calculated by the pullout model as input data. The bridging curves of the Z-pin with specialshaped crosssection for the pullout test and the loaddisplacement curves for the DCB test were calculated based on the proposed finite element model. The effect of the cross section perimeter of Zpin on the maximum bridging load was also discussed in detail. The simulation results were in good agreement with the experimental data.

Key words: Z-pin with special-shaped crosssection, bridging force, double cantilever beam (DCB) test, friction coefficient, connector

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