Thermo-Mechanical Vibration Analysis of Simply Supported Laminated and Flat Plates Under Harmonic Loading

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Year : 2026 | Volume : 14 | 02 | Page :
    By

    Neelam Soni,

  • Baij Nath Singh,

  • Prince Kumar Singh,

  1. Research Scholar, Department of Mechanical Engineering, Bennett University, Greater Noida, Uttar Pradesh, India
  2. Assistant Professor, Department of Mechanical Engineering, Bennett University, Greater Noida, Uttar Pradesh, India
  3. Research Scholar, Department of Mechanical Engineering, Bennett University, Greater Noida, Uttar Pradesh, India

Abstract

This paper delves into a numerical exploration of the vibration characteristics and frequency response of two types of plates: a simply supported rectangular laminated plate and a simply supported flat plate. These plates are subjected to concentrated harmonic forces within a thermal environment. The determination of the critical buckling temperature guides the assessment of thermal load effects. Analytical formulations, incorporating first-order shear deformation theory (FSDT) to consider shear deformation and rotational inertia effects, are utilized to obtain mode shapes, natural frequencies, and dynamic responses. The application of thermal loads is observed to decrease natural frequencies and shift response peaks towards lower frequencies. It is posited that thermal loads alter the structural stress state, with thermal stresses from uniform temperature changes being determined using thermo-elastic theory. These stresses are then incorporated as pre-stressed factors in subsequent dynamic analyses. The study reveals significant influences of thermal loads on natural frequencies, while the sequence and characteristics of mode shapes remain unchanged. Specific characteristics of laminated plates with different configurations are examined, indicating that increasing young’s modulus of the core leads to higher natural frequencies and response peaks shifting towards higher frequencies. The study reveals that natural frequencies get reduced with rising temperature of the plate, with the first natural frequency being especially susceptible to thermal changes. The accuracy of the theoretical formulation is substantiated through a close correlation with numerical results derived from ANSYS simulations.

 

Keywords: Mode shapes, Thermo elastic theory, FSDT, Flat plate, Laminated Plate.

How to cite this article:
Neelam Soni, Baij Nath Singh, Prince Kumar Singh. Thermo-Mechanical Vibration Analysis of Simply Supported Laminated and Flat Plates Under Harmonic Loading. Journal of Polymer & Composites. 2026; 14(02):-.
How to cite this URL:
Neelam Soni, Baij Nath Singh, Prince Kumar Singh. Thermo-Mechanical Vibration Analysis of Simply Supported Laminated and Flat Plates Under Harmonic Loading. Journal of Polymer & Composites. 2026; 14(02):-. Available from: https://journals.stmjournals.com/jopc/article=2026/view=242787


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Ahead of Print Subscription Review Article
Volume 14
02
Received 16/09/2025
Accepted 08/10/2025
Published 04/05/2026
Publication Time 230 Days
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