Nonlinear resonant responses of hyperelastic cylindrical shells with initial geometric imperfections

Chaos Solitons & Fractals, Год журнала: 2023, Номер 173, С. 113709 - 113709

Опубликована: Июнь 25, 2023

Язык: Английский

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Novel hierarchical bioinspired cellular structures with enhanced energy absorption under uniaxial compression

Aerospace Science and Technology, Год журнала: 2024, Номер 147, С. 108995 - 108995

Опубликована: Фев. 22, 2024

Biological thin-walled cellular structures, such as hierarchical structures of bone, exhibit unique internal that offer lightweight characteristics and high energy absorption capabilities. The compact bone shell can protect against local damage during high-impact events, while the porous cancellous is essential in absorbing energy. This research proposed five novel bioinspired inspired by well-arranged structure femur bones. These comprise four distinct cell types: hexagonal honeycomb, re-entrant, hybrid, hybrid cells. A comprehensive numerical model, validated with experimental data, was employed to assess performance these under uniaxial compression. Some key were revealed, including peak elastic load, plateau capacity, Poisson's ratio, effect size. results demonstrated surpassed traditional designs, design, trabecular-bone-inspired structures. enhanced due progressive buckling collapse mechanisms, showing promising implications for future engineering applications, particularly where paramount importance.

Язык: Английский

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A semi-analytical sinusoidal shear deformation theory for nonlinear dynamic response and vibration of CNT–FGM doubly curved shallow shells

Acta Mechanica, Год журнала: 2024, Номер 235(4), С. 2077 - 2112

Опубликована: Янв. 6, 2024

Язык: Английский

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Modeling and solution of eigenvalue problems of laminated cylindrical shells consisting of nanocomposite plies in thermal environments

Archive of Applied Mechanics, Год журнала: 2024, Номер 94(10), С. 3071 - 3099

Опубликована: Июль 23, 2024

Abstract This work is dedicated to the modeling and solution of eigenvalue problems within shear deformation theory (SDT) laminated cylindrical shells containing nanocomposite plies subjected axial compressive load in thermal environments. In this study, for homogeneous extended consisting functionally graded (FG) layers. The (LCSs) are arranged a piecewise FG distribution along thickness direction. Temperature-dependent material properties FG-nanocomposite estimated through micromechanical model, CNT efficiency parameters calibrated based on polymer obtained from molecular dynamics simulations. After mathematical modeling, second-order time-dependent fourth-order coordinate-dependent partial differential equations derived SDT, closed-form dimensionless frequency parameter critical first time. accuracy applied methodology confirmed by numerical comparisons, unique influences ply models, number sequence temperature vibration SDT Kirchhoff–Love (KLT) presented with examples.

Язык: Английский

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Influence of microstructural and environmental factors on the buckling performance of carbon nanotube-enhanced laminated composites: A multiscale analysis

Engineering Failure Analysis, Год журнала: 2024, Номер 158, С. 108055 - 108055

Опубликована: Фев. 3, 2024

Язык: Английский

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Experimental study for the effect of hole notched in fracture mechanics of GLARE and GFRP composites subjected to quasi-static loading

Theoretical and Applied Fracture Mechanics, Год журнала: 2022, Номер 122, С. 103624 - 103624

Опубликована: Окт. 10, 2022

Язык: Английский

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Nonlinear forced vibration analysis of laminated composite doubly-curved shells enriched by nanocomposites incorporating foundation and thermal effects

Aerospace Science and Technology, Год журнала: 2022, Номер 127, С. 107717 - 107717

Опубликована: Июнь 23, 2022

Язык: Английский

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Effect of (FG-CNT) Parabolic Distribution on Bending and Shear Deformation of (PMMA/CNT) Nano-Composite Porous Beams

Mechanics of Composite Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Язык: Английский

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Laminated Nanocomposite Structural Elements in Thermal Environments: Mathematical Modeling and Applications

Mathematical Methods in the Applied Sciences, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

ABSTRACT Modeling and solving the stability problem of laminated cylindrical shells (LCSs) formed from polymer‐based nanocomposite layers is one current topics contemporary mechanics requires interdisciplinary study. In this study, behavior LCSs consisting carbon nanotube (CNT)–reinforced in thermal environment under combined load examined through extended shear deformation theory (ST) for first time. The effective material properties each layer are computed using rule‐of‐mixture (ROM) method. Nanocomposite modeled as homogeneous orthotropic functionally graded (FG) material. Fundamental relations equations derived partial differential equations, closed‐form solution obtained Galerkin procedure to find original expression critical (CCL) selected structure environments. After checking accuracy proposed formulation by comparing it with reliable results literature, CCL accompanied a systematic study aimed at testing effects CNT models layers, number arrangement their sensitivity environment.

Язык: Английский

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Vibration response of shear deformable laminated truncated conical shells formed by nanocomposite laminae in thermal environments

Mechanics of Advanced Materials and Structures, Год журнала: 2025, Номер unknown, С. 1 - 16

Опубликована: Апрель 22, 2025

Язык: Английский

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