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A comprehensive numerical and experimental studies on static, buckling and dynamic behaviour of graphene-reinforced GFRP tapered laminated composite plates.

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Názov: A comprehensive numerical and experimental studies on static, buckling and dynamic behaviour of graphene-reinforced GFRP tapered laminated composite plates.
Autori: Kumar, Nitesh1 (AUTHOR), Arumugam, Ananda Babu1 (AUTHOR) ananda.babu@sharda.ac.in, Elumalai, Dhivya2 (AUTHOR), Priyadarshini, Saigeeta3 (AUTHOR)
Zdroj: Mechanics Based Design of Structures & Machines. 2025, Vol. 53 Issue 8, p5599-5623. 25p.
Predmety: *GRAPHENE, *COMPOSITE plates, *GLASS composites, *MECHANICAL buckling, *COMPUTER simulation, *TRANSIENTS (Dynamics), *SENSITIVITY analysis, *THERMAL strain
Abstrakt: This study developed a numerical model to analyze Glass/Epoxy composites enhanced with nanographene fillers across three tapered configurations (TM1, TM2, TM3). The incorporation of graphene demonstrated significant resistance to material property degradation under thermal loading, resulting in improved critical buckling loads and natural frequencies. The developed numerical model is validated with experimental work with numerical results such as critical buckling load and natural frequencies of tapered plates for a few cases and additionally with numerical study available with literature. A detailed parametric study has been conducted to understand the effects of the weight fraction of fiber, weight fraction of graphene, temperature on critical, buckling load, natural frequencies and dynamic response of various composite tapered plates. The numerical analysis showed that adding graphene to the composite plates increased their critical buckling load, with the TM-3 configuration showing the highest values (6.992 kN), followed by TM-2 (6.456 kN) and TM-1 (6.079 kN). Static deflection analysis identified an optimal graphene content of 0.5% at 45 °C, with deflection resistance showing marked improvement across temperature ranges - specimens with 0.0075% graphene exhibited only a 7.2% deflection increase from 30 °C to 90 °C compared to 12.4% in pure GFRP specimens. The natural frequency measurements established TM-2 as the most dynamically responsive configuration with the highest frequency of 65.4 Hz with 1% graphene, representing a 12% improvement over the uniform plate configuration (58.3 Hz), while mode (1,2) demonstrated even greater sensitivity with TM-2 frequency increasing from 55.445 Hz to 63.572 Hz. [ABSTRACT FROM AUTHOR]
Databáza: Academic Search Index
Popis
Abstrakt:This study developed a numerical model to analyze Glass/Epoxy composites enhanced with nanographene fillers across three tapered configurations (TM1, TM2, TM3). The incorporation of graphene demonstrated significant resistance to material property degradation under thermal loading, resulting in improved critical buckling loads and natural frequencies. The developed numerical model is validated with experimental work with numerical results such as critical buckling load and natural frequencies of tapered plates for a few cases and additionally with numerical study available with literature. A detailed parametric study has been conducted to understand the effects of the weight fraction of fiber, weight fraction of graphene, temperature on critical, buckling load, natural frequencies and dynamic response of various composite tapered plates. The numerical analysis showed that adding graphene to the composite plates increased their critical buckling load, with the TM-3 configuration showing the highest values (6.992 kN), followed by TM-2 (6.456 kN) and TM-1 (6.079 kN). Static deflection analysis identified an optimal graphene content of 0.5% at 45 °C, with deflection resistance showing marked improvement across temperature ranges - specimens with 0.0075% graphene exhibited only a 7.2% deflection increase from 30 °C to 90 °C compared to 12.4% in pure GFRP specimens. The natural frequency measurements established TM-2 as the most dynamically responsive configuration with the highest frequency of 65.4 Hz with 1% graphene, representing a 12% improvement over the uniform plate configuration (58.3 Hz), while mode (1,2) demonstrated even greater sensitivity with TM-2 frequency increasing from 55.445 Hz to 63.572 Hz. [ABSTRACT FROM AUTHOR]
ISSN:15397734
DOI:10.1080/15397734.2025.2470866