Best Paper Award: Accorded to Dr Supen Kumar at MRAE 2023


paper award (1)

The Department of Mechanical Engineering is delighted to share that Dr Supen Kumar Sah, Assistant Professor, Department of Mechanical Engineering, has received the best paper award for his paper titled “Free Vibration Analysis of Functionally Graded Material Sandwich Plate Using Refined Shear Deformation Theory” in the 2nd International Conference on Modern Research in Aerospace Engineering (MRAE 2023). Dr Supen collaborated with Saloni Malviya of VIT, Bhopal, for the research paper. The paper explores the intricate dynamics of functionally graded material sandwich plates, employing a refined deformation theory. Dr Sah’s exceptional work has not only contributed to the scientific community but has also demonstrated his dedication and passion for advancing knowledge in the field of materials science and engineering.


In the present study, free vibration analysis of a functionally graded material sandwich plate has been carried out using refined shear deformation theory. The shear correction factor is not needed since the parabolic variation of shear strain through the thickness is in such a way that shear stresses vanish on the plate surfaces. Hamilton’s principle is used for the derivation of the equation of motion for the theory. Additionally, Navier’s solution is used to obtain the eigenvalue equation for the sandwich plate. The three variants of sandwich plate are chosen for the analysis. To carry out the free vibration analysis three different types of FGM sandwich plate models namely 1-1-1, 1-2-1, and 2-2-1 have been considered. A power law defines the volume fraction index and the material properties of the individual layers of the sandwich plate. Lastly, the impact of parameters such as volume fraction, aspect ratio, and length-to-width ratio on frequency parameters is investigated.

Future Research Plans

• Modelling and Analysis of porous uni and multi-directional Functionally Graded Material (FGM) plates to obtain the impact of porosity distributions over structural responses.

• Analytical and finite Element Solutions for static and dynamic response of FGM sandwich plates employing non-polynomial shear deformation theories under elastic foundation.




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