Vibrational Analysis of Composite Conical-Cylindrical Shells with Functionally Graded Coatings in Thermal Environments

Materials, Journal Year: 2024, Volume and Issue: 17(18), P. 4576 - 4576

Published: Sept. 18, 2024

This article studies the vibrational behavior of composite conical-cylindrical shells (CCSs) with functionally graded coatings (FGCs) in thermal environments using first-order shear deformation theory. Firstly, equivalent material parameters, fundamental frequency, and resonant displacement responses CCSs FGCs are derived mixture principle, complex modulus method, transfer function approach. Then, detailed vibration tests performed on CCS structures without to assess reliability proposed model, revealing that current model accurately forecasts FGCs. Finally, effect key parameters properties is investigated. The results demonstrate increasing index, coating thickness, Young’s ratio can greatly enhance suppression capability structure.

Language: Английский

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Application of Surface-Stress Driven Model for Higher Vibrations Modes of Functionally Graded Nanobeams

Published: Jan. 10, 2024

This manuscript employs a surface stress-driven nonlocal model to explore the combined effects of long-range interaction and energy on higher vibration modes functionally graded nanobeams. The nanobeam theory, based Bernoulli-Euler kinematics, incorporates such as elasticity, residual stresses, density, rotary inertia. Hamilton's principle is applied derive governing equation with size-dependent considerations. main outcomes parametric investigation, considering four different kinematic boundary conditions (Cantilever, Simply-Supported, Clamped-Pinned, Doubly-Clamped) while varying parameter material gradient index, are presented discussed. Additionally, normalized natural frequencies for second, third, fourth fifth vibrations provided analyzed each case under study. results underscore model's effectiveness in capturing overall dynamic behavior nanobeams, offering cost-effective approach designing optimizing nano-scaled structures.

Language: Английский

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Application of Surface-Stress Driven Model for Higher Vibrations Modes of Functionally Graded Nanobeams

Published: Jan. 11, 2024

This manuscript employs a surface stress-driven nonlocal model to explore the combined effects of long-range interaction and energy on higher vibration modes functionally graded nanobeams. The nanobeam theory, based Bernoulli-Euler kinematics, incorporates such as elasticity, residual stresses, density, rotary inertia. Hamilton's principle is applied derive governing equation with size-dependent considerations. main outcomes parametric investigation, considering four different kinematic boundary conditions (Cantilever, Simply-Supported, Clamped-Pinned, Doubly-Clamped) while varying parameter material gradient index, are presented discussed. Additionally, normalized natural frequencies for second, third, fourth fifth vibrations provided analyzed each case under study. results underscore model's effectiveness in capturing overall dynamic behavior nanobeams, offering cost-effective approach designing optimizing nano-scaled structures.

Language: Английский

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Wave solutions in nonlocal integral beams

Continuum Mechanics and Thermodynamics, Journal Year: 2024, Volume and Issue: 36(6), P. 1607 - 1627

Published: Aug. 16, 2024

Abstract Wave propagation in slender beams is addressed the framework of nonlocal continuum mechanics. The elastodynamic problem formulated exploiting consistent methodologies pure integral, mixture and strain gradient elasticity. Relevant wave solutions are analytically provided, with peculiar attention to reflection near field phenomena occurring presence boundaries. Notably, solution got as superimposition incident, reflected, primary secondary waves. latter contribution represents a further effect due size dependent mechanical behaviour. Limit responses for vanishing parameter evaluated, consistently showing zero amplitude wave. Parametric analyses carried out show how length scale parameter, incident geometric elastic properties beam affect amplitudes results obtained different integral elasticity approaches compared discussed.

Language: Английский

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Stokes’ transform solution method for dynamics of a short-fiber-reinforced nanorod via second-order strain gradient theory

Mechanics Based Design of Structures and Machines, Journal Year: 2024, Volume and Issue: 53(3), P. 2280 - 2300

Published: Sept. 27, 2024

Language: Английский

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Local–nonlocal integral theories of elasticity with discontinuity for longitudinal vibration analysis of cracked rods

Acta Mechanica, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Language: Английский

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