Nonlinear flutter and limit-cycle oscillations of damaged highly flexible composite wings

Hoseini, Hanif; Hodges, Dewey H.

doi:10.1007/s11071-019-04968-w

Cited by 6 publications

(1 citation statement)

References 34 publications

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“…From the initial stage of the development of the aviation industry until now, the flutter problem of aircraft structures has always existed, and the investigations of aviation engineers on the flutter problem have never been stopped. The flutter problems of isotropic panels, 9,10 shells, 11–13 and wing structures 14,15 first attracted the attention of scientists. Based on the von Kármán large deformation and supersonic piston theories, Ye and Dowell 16 studied the limit cycle flutter of cantilever panels.…”

Section: Introductionmentioning

confidence: 99%

Aeroelastic analysis and flutter control of wings and panels: A review

Chai

Gao

Ankay

et al. 2021

Int Journal of Mech Sys Dyn

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Flutter is a self-excited vibration under the interaction of the inertial force, aerodynamic force, and elastic force of the structure. After the flutter occurs, the aircraft structures will exhibit limit cycle oscillation, which will cause catastrophic accidents or fatigue damage to the structures. Therefore, it is of great theoretical and practical significance to study the aeroelastic characteristics and flutter control for improving the aeroelastic stability of aircraft structures. This paper reviews the recent advances in aeroelastic analysis and flutter control of wings and panel structures. The mechanism of aeroelastic flutter of wings and panels is presented. The research methods of aeroelastic flutter for different structures developed in recent years are briefly summarized. Various control strategies including the linear and nonlinear control algorithms as well as the active flutter control results of wings and panels are presented. Finally, the paper ends with conclusions, which highlight challenges of the development in aeroelastic analysis and flutter control, and provide a brief outlook on the future investigations. This study aims to present a comprehensive understanding of aeroelastic analysis and flutter control. It can also provide guidance on the design of new wings and panel structures for improving their aeroelastic stability.

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Section: Introductionmentioning

confidence: 99%

Aeroelastic analysis and flutter control of wings and panels: A review

Chai

Gao

Ankay

et al. 2021

Int Journal of Mech Sys Dyn

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On the geometrically nonlinear vibration of a piezo‐flexomagnetic nanotube

Malikan

Eremeyev

2020

Math Methods in App Sciences

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In order to describe the behavior of thin elements used in micro‐electro‐mechanical systems (MEMS) and nano‐electro‐mechanical systems (NEMS), it is essential to study a nonlinear free vibration of nanotubes under complicated external fields such as magnetic environment. In this regard, the magnetic force applied to the conductive nanotube with piezo‐flexomagnetic elastic wall is considered. By the inclusion of Euler‐Bernoulli beam and using Hamilton's principle, the equations governing the system are extracted. More importantly, a principal effect existed in a nonlinear behavior such as axial inertia is thoroughly analyzed which is not commonly investigated. We then consider the effects of nanoscale size using the nonlocal strain gradient theory (NSGT). Hereafter, the frequencies are solved as semianalytical solutions on the basis of Rayleigh‐Ritz method. The piezo‐flexomagnetic nanotube (PF‐NT) is calculated with different boundary conditions. In order to validate, the results attained from the present solution have been compared with those available in the open literature. We realized that the nonlinear frequency analysis is so significant when a nanotube has fewer degrees of freedom at both ends and its length is long.

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The investigation on structural health monitoring of aerospace structures via piezoelectric aeroelastic energy harvesting

Elahi

2020

Microsyst Technol

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Nonlinear flutter and limit-cycle oscillations of damaged highly flexible composite wings

Cited by 6 publications

References 34 publications

Aeroelastic analysis and flutter control of wings and panels: A review

Aeroelastic analysis and flutter control of wings and panels: A review

On the geometrically nonlinear vibration of a piezo‐flexomagnetic nanotube

The investigation on structural health monitoring of aerospace structures via piezoelectric aeroelastic energy harvesting

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