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Micromechanical analysis of unidirectional polymeric composites material with triangular fibers

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Abstract

The purpose of this study is to investigate the mechanism of load transfer in unidirectional polymeric composites material with triangular fibers in the presence of broken fibers. It is assumed that all fibers with triangle-cross section lie in a same direction while loaded by a load at infinity. In previous studies, the behavior of polymeric matrix is assumed elastic, while the behavior of most polymeric matrix is elastic-perfect plastic. For this purpose, equilibrium equations by use of shear-lag theory have been derived and by proper using boundary and boundness conditions, displacement field and stress distribution were computed. Finally, the results of stress concentrations and di shear stress, at neighbor of broken fibers for carbon-epoxy composite material were extracted and compared with composite materials with circular fibers. The analytical results are compared to the detailed finite element values. A close match is observed between the two methods.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Hamedan Branch, Islamic Azad University, Hamedan, Iran

    F. Barati, E. Torabi, H. Veiskarami & M. M. Attar

  2. Department of Mechanical Engineering, Khomein Branch, Islamic Azad University, Khomein, Iran

    A. Khanbabaea Nava

Authors
  1. F. Barati
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  2. E. Torabi
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  3. H. Veiskarami
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  4. A. Khanbabaea Nava
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  5. M. M. Attar
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Corresponding author

Correspondence to M. M. Attar.

Additional information

Recommended by Associate Editor Sang-Hee Yoon

Mohammad Mahdi Attar is an Associate Professor in Department of Mechanical Engineering, Hamedan Branch, and Islamic Azad University. He received Ph.D. from Science and Research Branch, Islamic Azad University in 2015. His interests include heat transfer enhancement, hyperthermia, composite material and etc.

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Barati, F., Torabi, E., Veiskarami, H. et al. Micromechanical analysis of unidirectional polymeric composites material with triangular fibers. J Mech Sci Technol 31, 4755–4762 (2017). https://doi.org/10.1007/s12206-017-0922-6

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  • DOI: https://doi.org/10.1007/s12206-017-0922-6

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