Dynamic Response Analysis of Isotropic and Orthotropic Rectangular Plates under Clamped-Free Conditions

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Year : 2026 | Volume : 14 | 03 | Page :
    By

    K. Rakesh,

  • M.L. Pavan Kishorre,

  • M. Avinash,

  • B. Madhavi,

  1. Graduate Student, Department of Mechatronics Engineering, Faculty of Science and Technology, ICFAI Foundation for Higher Education (Icfai Tech), IFHE, Hyderabad, Telangana, India
  2. Assistant Professor, Department of Mechanical Engineering, Faculty of Science and Technology, ICFAI Foundation for Higher Education (Icfai Tech), IFHE, Hyderabad, Telangana, India
  3. Associate Professor, Department of Mechanical Engineering, Faculty of Science and Technology, ICFAI Foundation for Higher Education (Icfai Tech), IFHE, Hyderabad, Telangana, India
  4. Assistant Professor, Department of Mechanical Engineering, Faculty of Science and Technology, ICFAI Foundation for Higher Education (Icfai Tech), IFHE, Hyderabad, Telangana, India

Abstract

This study explores Theoretical and numerical tools of determining the free vibration properties of isotropic and fiber-reinforced composite rectangular plates. The effect of anisotropy of materials on the dynamic response of the plates is compared between the Aluminium plates and the glass-epoxy laminates. The model used in the study is a three-dimensional finite element model that is designed using a combination of SolidWorks and ANSYS workflow. Clamped-free boundary conditions are implemented to model cantilever-type structural supports that are typical in the engineering profession. Numerical simulations are used to derive the initial 6 natural frequencies and mode shapes at different fiber orientations. The findings indicate that it is always the case that Aluminium plates produce greater frequencies because the plate is direction-free in terms of its stiffness. The evaluation of the rotating fibers between 0° and 90 degrees shows that there is a significant redistribution of structural stiffness in composite laminates. We find that the fiber angle and frequency have a non-linear association caused by trigonometric transformations of the stiffness. The off-axis positions at 15 o bring on a different coupling of the bending and torsional deformations at higher frequencies. The study considers the issue of symmetric stacking sequences exhibiting balanced modal behavior versus antisymmetric configurations. Results prove that mid-plane symmetry is an effective method of removing an unwanted bending-stretching coupling effect during vibration. Comparison with theoretical standards gives the error by percentages low values, this fact demonstrates that the numerical discretization is reliable. Relative plots indicate that the peaks in frequency at high mode in theoretical models are higher than that in the finite element results. This paper contains a fundamental design tool that is used to balance the composite layups and prevent resonance in high-tech engineering.

Keywords: Free vibration analysis; Rectangular plates; Composite materials; Glass-epoxy laminate; Fiber orientation; Natural frequencies; Finite element analysis.

How to cite this article:
K. Rakesh, M.L. Pavan Kishorre, M. Avinash, B. Madhavi. Dynamic Response Analysis of Isotropic and Orthotropic Rectangular Plates under Clamped-Free Conditions. Journal of Polymer & Composites. 2026; 14(03):-.
How to cite this URL:
K. Rakesh, M.L. Pavan Kishorre, M. Avinash, B. Madhavi. Dynamic Response Analysis of Isotropic and Orthotropic Rectangular Plates under Clamped-Free Conditions. Journal of Polymer & Composites. 2026; 14(03):-. Available from: https://journals.stmjournals.com/jopc/article=2026/view=243707


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Ahead of Print Subscription Original Research
Volume 14
03
Received 23/03/2026
Accepted 07/04/2026
Published 13/05/2026
Publication Time 51 Days
2

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