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A study on finite element of pre damaged stress concentration factor for a composite laminate member with central circular

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Abstract

The study investigates the pre damaged stress concentration factor (SCF) for a composite laminate member (CLM) with central circular hole subjected to tensile loading. The presence of holes yields high stress concentrations in the structural members termed as stress raiser and often regarded as an important design deriver. The pre damaged SCF refers to the stress concentrations within elastic (undamaged) range of the CLM prior to the failure initiation. The traditional experimental and analytical methods for the estimation of SCF offer macro level behaviour which is not considered appropriate for CLM where lamina by lamina behaviour is more significant. A meso level finite element (FE) model is presented to capture the lamina by lamina influence on the overall SCF for a CLM using commercial software Abaqus. The paper deals with the fundamental influencing factors such as laminae orientation effect, stress distribution effect around periphery of the hole, decaying effect and ligament effect on SCF for CLM. Analytical models have been formulated to validate the FE models. The results of FE models have been found in close agreement with the analytical results.

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Author information

Authors and Affiliations

  1. CEME, NUST, Rawalpindi, Pakistan

    T. Ahmed & Hasan Aftab Saeed

  2. University of Derby, England, UK

    R. S. Choudhry

  3. HITEC University, Taxila, Pakistan

    Atta Ur Rehman Shah

Authors
  1. T. Ahmed
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  2. R. S. Choudhry
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  3. Atta Ur Rehman Shah
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  4. Hasan Aftab Saeed
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Corresponding author

Correspondence to T. Ahmed.

Additional information

Recommended by Associate Editor Tae June Kang

Tanveer Ahmed received a Bachelor of Science degree in Mechanical Engineering in 1991 from University of Engineering and Technology Lahore, Pakistan. Then he worked in various applied engineering fields in various organizations. He received a Master of Science degree in Mechanical Engineering in 2003 from National University of Science and Technology Islamabad, Pakistan. As a professional engineer he possesses versatile experience in various applied engineering fields. His current interests include composite materials, modelling and simulation, and energy conservation.

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Ahmed, T., Choudhry, R.S., Shah, A.U.R. et al. A study on finite element of pre damaged stress concentration factor for a composite laminate member with central circular. J Mech Sci Technol 32, 3653–3658 (2018). https://doi.org/10.1007/s12206-018-0717-4

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  • DOI: https://doi.org/10.1007/s12206-018-0717-4

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