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Volume 42 Issue 2
Feb.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(2): 287-293.
HU Long, LIU Zhenguo, WANG Yibo, et al. Test and numerical simulation on shear property of 3D braided composite straight pin[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 287-293. doi: 10.13700/j.bh.1001-5965.2015.0105(in Chinese)
Citation: HU Long, LIU Zhenguo, WANG Yibo, et al. Test and numerical simulation on shear property of 3D braided composite straight pin[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 287-293. doi: 10.13700/j.bh.1001-5965.2015.0105(in Chinese)
shu

Test and numerical simulation on shear property of 3D braided composite straight pin

doi: 10.13700/j.bh.1001-5965.2015.0105

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 03 Mar 2015
  • Publish Date: 20 Feb 2016
    Abstract
  • Joining technique using composite fasteners is one of the key technologies for the manufacturing of composite structures. Test and numerical research on the shear property of 3D braided composite straight pin fastener is presented. Three-dimensional full five-directional braided technology is used to fabricate the specimens. The shear tests of the specimens are preformed to study the ultimate bearing capacity and failure style of the 3D braided composite straight pin. A homogenization method is used to predict the elastic constants of the straight pin specimens. A strength analysis method is established to describe the strength characteristics of the 3D braided composite straight pin specimens. The modified Tsai-Hill failure criterion and continuum damage theory are introduced into the method. According to this method, a finite element model is developed to simulate the progressive damage process of the specimens. Good agreements are achieved in the load-deflection curves and damage distributions between test and numerical results under shear load, indicating that the proposed analysis method is effective and feasible in predicting the macroscopic strength of 3D braided composite structures.

     

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