Browsing by Author "Kurup, M."

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Aeroelastic flutter of triply periodic minimal surface (TPMS) beams
(Elsevier B.V., 2023) Kurup, M.; Jeyaraj, P.
This work unveils the linear aeroelastic flutter attributes of functionally graded triply periodic minimal surface (FG-TPMS) beams. The Euler-Bernoulli theory including neutral axis shift effect is used to model the FG-TPMS beams. The functional grading is achieved by varying the wall thickness of unit cells according to power-law form. Analysis is carried out for four TPMS patterns, mainly gyroid, primitive, diamond and IWP, under various boundary conditions. Using Hamilton's principle, governing differential equations are derived whose solutions are obtained numerically using the Ritz method. The mode shapes at various values of aerodynamic pressure have also been evaluated. It can be concluded that the type of pattern, boundary conditions, relative cell density, neutral axis shift effect and gradient index plays a crucial role in the prediction of flutter instability. © 2023
Experimental investigation on vibration and static deflection of 3D printed functionally graded triply periodic minimal surface beams
(Elsevier, 2025) Kurup, M.; Jeyaraj, P.
This research work presents a comprehensive experimental investigation on free vibration and static deflection behavior of functionally graded triply periodic minimal surface (FG-TPMS) beams. The grading in these beams is obtained by changing the wall thickness of the TPMS unit cell layer wise. Polylactic acid filament is used to print the samples through the fused filament fabrication approach. The study explores the influence of various geometrical dimensions, with specific emphasis on the unit cell size and its graded pattern through the thickness. Four primary lattice cells, namely, gyroid, primitive, diamond, and IWP (I-graph & wrapped package-graph), are chosen for analysis. The findings from this study provide valuable insights, demonstrating that a specific lattice cell pattern with appropriate grading has the potential to enhance the vibration properties and deflection characteristics of 3D-printed samples. This knowledge is crucial for designing lightweight and efficient structures, particularly in the context of advancements in additive manufacturing technologies. © 2026 Elsevier Inc. All rights reserved..
Free vibration and buckling response of functionally graded triply periodic minimal surface beams considering neutral axis dislocation
(SAGE Publications Inc., 2023) Kurup, M.; Pitchaimani, J.
The work pioneers a novel investigation into the free vibration and buckling behavior of triply periodic minimal surface beams, characterized by diverse distribution profiles. Using Euler-Bernoulli theory, under various boundary conditions, the investigation is carried out on four TPMS (Triply Periodic Minimal Surface) patterns, mainly gyroid, primitive, diamond and IWP (I-graph-wrapped package). The neutral axis would not coincide with the geometric center of the functionally graded beams so the neutral shift effect is taken into consideration appropriately. Governing differential equations are derived and the solutions are obtained numerically using the Ritz method. The mode shapes have also been calculated. It can be concluded that the type of pattern and distribution profile, boundary conditions, grade and neutral axis shift effect play a vital role in the prediction of vibration and buckling properties. © The Author(s) 2023.