The Effect of Various Fiber Orientations and Boundary Conditions on Natural Frequencies of Laminated Composite Beam

  • Authors

    • M Arif Mat Norman
    • M Amiruddin Zainuddin
    • Jamaluddin Mahmud
    2018-07-21
    https://doi.org/10.14419/ijet.v7i3.11.15932
  • Free Vibration, Laminated Composite, Finite Elements simulation, ANSYS.

  • This paper investigates the free vibration characteristics of laminate composite beam for various lamination schemes and under various boundary conditions. A beam model with the aspect ratio (length to thickness) of 25 to 150 made of carbon/ epoxy laminates under free vibration were constructed using a commercially available finite element software (ANSYS). The varied parameters are the lamination schemes (cross ply, angle ply and unidirectional ply) and boundary conditions (Clamp-Free (C-F), Clamp-Clamp (C-C), Clamp-Hanger (C-H), Free-Free (F-F) and Hanger-Hanger (H-H) ). For each case, finite element simulations were performed and the natural frequencies were determined. Mode shapes were also analyzed to observe the beam’s deformation behavior. Results showed that increasing aspect ratio will decrease natural frequencies for the first seven mode shapes. In terms of lamination scheme, the unidirectional ply produced the highest frequency (34.26 Hz), followed by cross ply (34.05 Hz) and angle ply (13.60 Hz) at the aspect ratio of 25. In terms of boundary conditions, the Hanger-Hanger boundary condition produced the highest natural frequency (2272.52  Hz) at the aspect ratio of 25, while Clamped-Free boundary condition produced the lowest frequency (2.28 Hz) at the aspect ratio of 150. In general, it can be concluded that the current study is useful and has contributed significant knowledge to better understand of effect of various fiber orientations and boundary conditions on the natural frequencies of laminated composite beam.

     

  • References

    1. [1] Zuo, H., Yang, Z., Chen, X., Xie, Y., & Miao, H. (2015). Analysis of laminated composite plates using wavelet finite element method and higher-order plate theory. Composite Structures, 131(October), 248–258.

      [2] Jafari-Talookolaei R.A, Abedi M., Kargarnovin M.H. and Ahmadian M.T, 2012. "An analyticalapproach for the free vibration analysis of generally laminated composite beams with shear effect and rotary inertia." International Journal of Mechanical Sciences, 65:97–104

      [3] Mohammad-Abadi M. and Daneshmehr A.R., 2015."Modified couple stress theory applied todynamic analysis of composite laminated beamsby considering different beam theories".International Journal of Engineering Science, 87:83–102

      [4] Li, J., & Hua, H. (2011). Free vibration analyses of axially loaded laminated composite beams based on higher-order shear deformation theory. Meccanica, 46(6), 1299–1317.

      [5] Elshafei, M. A. (2013). FE Modeling and Analysis of Isotropic and Orthotropic Beams Using First Order Shear Deformation Theory. Materials Sciences and Applications, 04(01), 77–102. http://doi.org/10.4236/msa.2013.4101

      [6] Thakur, A. S., & Patel, N. (2016). Finite Element Analysis of Fundamental Frequency Responses of the Cylindrical Shell Panel with Cutout, 3(6), 674–677.

      [7] Bhavsar, D. (2015). Free Vibration Analysis of Composite Laminate for Different Simply Supported Boundary Condition, 3(1), 546–549.

      [8] Balcı, M., Nalbant, M. O., Kara, E., & Gündoğdu, Ö. (2014). Free vibration analysis of a laminated composite beam with various boundary conditions. International Journal of Automotive and Mechanical Engineering,1734–1746.

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  • How to Cite

    Arif Mat Norman, M., Amiruddin Zainuddin, M., & Mahmud, J. (2018). The Effect of Various Fiber Orientations and Boundary Conditions on Natural Frequencies of Laminated Composite Beam. International Journal of Engineering & Technology, 7(3.11), 67-71. https://doi.org/10.14419/ijet.v7i3.11.15932