On the Buckling Response of Functionally Graded Carbon Nanotube-reinforced Composite Imperfect Beams

Authors

  • Sabrina Boutaleb
    Affiliation
    Material and Hydrology Laboratory, Civil Engineering Department, Faculty of Technology, University of Sidi Bel Abbes, 22000 Sidi Bel Abbes, P. O. B. 89, Algeria
  • Ammar Boulal
    Affiliation
    Laboratory of Geomatics and Sustainable Development, University of Tiaret, 14000 Tiaret, P. O. B. 78, Algeria
  • Mohamed Zidour
    Affiliation
    Laboratory of Geomatics and Sustainable Development, University of Tiaret, 14000 Tiaret, P. O. B. 78, Algeria Civil Engineering Department, University of Tiaret, 14000 Tiaret, P. O. B. 78, Algeria
  • Mohammed A. Al-Osta
    Affiliation
    Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, Academic Belt Road, 31261 Dhahran, Saudi Arabia Interdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, Academic Belt Road, 31261 Dhahran, Saudi Arabia
  • Abdelouahed Tounsi
    Affiliation
    Material and Hydrology Laboratory, Civil Engineering Department, Faculty of Technology, University of Sidi Bel Abbes, 22000 Sidi Bel Abbes, P. O. B. 89, Algeria Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, Academic Belt Road, 31261 Dhahran, Saudi Arabia Interdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, Academic Belt Road, 31261 Dhahran, Saudi Arabia Department of Civil and Environmental Engineering, Lebanese American University, 309 Bassil Building, 13-5053 Byblos, Lebanon
  • Abdeldjebbar Tounsi
    Affiliation
    Material and Hydrology Laboratory, Civil Engineering Department, Faculty of Technology, University of Sidi Bel Abbes, 22000 Sidi Bel Abbes, P. O. B. 89, Algeria Industrial Engineering and Sustainable Development Laboratory, Mechanical Engineering Department, Faculty of Science and Technology, University of Rélizane, 48000 Relizane, Algeria
  • Mohamed Abdelaziz Salem
    Affiliation
    Department of Mechanical Engineering, College of Engineering, King Khalid University, 61421 Abha, P. O. B. 394, Saudi Arabia
  • Khaled Mohamed Khedher
    Affiliation
    Department of Civil Engineering, College of Engineering, King Khalid University, 61421 Abha, P. O. B. 394, Saudi Arabia
https://doi.org/10.3311/PPci.23825

Abstract

The current inquiry aims to scrutinize the porosity's effect on the buckling response of carbon nanotube reinforced composite (CNTRC) imperfect beams. The developed theories account for higher-order variation of transverse shear strain through the depth of the beam and satisfy the stress-free boundary conditions on the top and bottom surfaces of the beam. Single-walled carbon nanotubes (SWCNTs) are distributed and aligned in a polymeric matrix with various reinforcement patterns to create CNTRC porous beams. The material properties of the functionally graded beam determined using the mixture rule are assumed to vary according to the power law distribution of the volume fraction of the constituents. The mathematical models presented in this study are validated through numerical comparison with existing results. The new buckling results of carbon nanotube-reinforced porous beams are analyzed considering the influence of several parameters, including volume fraction, aspect ratios, degree of porosity, and types of reinforcement. The results stipulate that the above parameters play a significant role in the critical buckling load variation. It is proclaimed that the critical buckling load dwindled as porosity increased and that the X-CNT reinforced beam has a high resistance against buckling compared to other reinforcement types.

Keywords:

Functionally Graded Carbon Nanotube (FG-CNT), beam, buckling, porosity, volume fraction

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Published Online

2024-06-07

How to Cite

Boutaleb, S., Boulal, A., Zidour, M., Al-Osta, M. A., Tounsi, A., Tounsi, A. “On the Buckling Response of Functionally Graded Carbon Nanotube-reinforced Composite Imperfect Beams”, Periodica Polytechnica Civil Engineering, 68(4), pp. 1052–1063, 2024. https://doi.org/10.3311/PPci.23825

Issue

Vol. 68 No. 4 (2024)

Section

Research Article