Composite Structures, Год журнала: 2024, Номер unknown, С. 118799 - 118799
Опубликована: Дек. 1, 2024
Язык: Английский
Advanced Engineering Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 13, 2025
Bistable mechanisms, characterized by their ability to maintain two distinct stable states under external stimuli, offer a versatile solution engineering challenges, particularly in vibration suppression systems. While tuned mass dampers (TMDs) effectively mitigate vibrations at specific frequencies, efficacy falls short across broader spectrum. This work proposes enhanced adaptability for passive reduction without dependence on complex control systems or power sources integrating bistable mechanisms into TMD A mechanism is designed based numerical simulations and 3D‐printed via fused filament fabrication. The provides more adaptive characteristics displacing the flexible link. Following experimental testing, optimized design has been determined. Then, chain of introduced achieve desired displacement carrying payload. stroke length test customized reduce system carefully optimizing geometric configurations mechanisms.
Язык: Английский
Процитировано
1
Thin-Walled Structures, Год журнала: 2025, Номер unknown, С. 113230 - 113230
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
1
International Journal of Mechanical Sciences, Год журнала: 2024, Номер 283, С. 109667 - 109667
Опубликована: Авг. 20, 2024
Язык: Английский
Процитировано
8
Applied Mathematics and Mechanics, Год журнала: 2024, Номер 45(7), С. 1243 - 1260
Опубликована: Июль 1, 2024
Abstract Locally resonant metamaterials have low-frequency band gaps and the capability of converging vibratory energy in at cells. It has been demonstrated by several researchers that dissipatioin within gap can be improved using viscoelastic materials. This paper designs an integrated metamaterial for harvesting vibration isolation. The is achieved a beam periodically arrayed with spatial ball-pendulum nonlinear harvesters. resonator function placing free-rolling magnetic ball spherical cavity additional induction coil. dynamic equations under transverse excitation are established, isolation characteristics dispersion relation analyzed. results show vibrations main body significantly suppressed frequency range local resonance gap. At same time, elastic waves limited function, which improves output. Finally, experimental platform established validation purposes.
Язык: Английский
Процитировано
7
Nonlinear Dynamics, Год журнала: 2024, Номер unknown
Опубликована: Сен. 3, 2024
Acoustic/elastic metamaterials exhibit a wealth of unusual properties conducive to wave manipulation. This review outlines state-of-the-art developments from FPUT chains, granular crystals nonlinear acoustic (NAMs). It mainly discusses key advances made in the domain NAMs for manipulation, vibration control and sound attenuation given blooming interest exploring how nonlinearity offers possibilities discovering novel phenomena, principles that potentially go well beyond linear relevant theories. reveal intriguing revolutionizing our understanding behavior including breakdown reciprocity, stationary invariance space–time invariance, have potential promote superior engineering performance like ultra-low ultra-broadband reduction. An overview present research further challenges are provided fields such as calculation methods, amplitude-dependent bandgaps, self-adaptive bands, nonreciprocal control, harmonic chaotic dynamics, attenuation, practical design, experimental implementation, applications.
Язык: Английский
Процитировано
4
International Journal of Mechanical Sciences, Год журнала: 2025, Номер unknown, С. 110058 - 110058
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0
Composites Part A Applied Science and Manufacturing, Год журнала: 2025, Номер unknown, С. 108932 - 108932
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Robotics and Computer-Integrated Manufacturing, Год журнала: 2025, Номер 95, С. 103031 - 103031
Опубликована: Апрель 16, 2025
Язык: Английский
Процитировано
0
Journal of Materiomics, Год журнала: 2024, Номер 11(1), С. 100884 - 100884
Опубликована: Май 29, 2024
Metadevices have emerged as a new element or system in recent years, from optics to mechanical science, showing superior performance and powerful application potential. In this study, metadevice that capable of low-frequency vibration isolation, which is called metamaterial springs metasprings, proposed. Meanwhile, modular design method reported obtain the customizable quasi-zero stiffness characteristic designed metaspring. As proof-of-concept, we demonstrate, both simulations experiments, characteristics proposed metasprings using 3D-printed experimental specimens. Moreover, isolation properties demonstrated tests automotive tests. This work provides metadevice, is, for well designing may revolutionize devices field isolation.
Язык: Английский
Процитировано
3
Applied Mathematics and Mechanics, Год журнала: 2024, Номер 45(7), С. 1171 - 1188
Опубликована: Июль 1, 2024
Abstract A metamaterial vibration isolator, termed as wave-insulating is proposed, which preserves enough load-bearing capability and offers ultra-low broad bandgaps for greatly enhanced wave insulation. It consists of plate-shaped metacells, whose symmetric antisymmetric local resonant modes offer several low mode although the complete bandgap remains high narrow. The mechanisms, isolation properties, effects key parameters, robustness to complex conditions are clarified. As experimentally demonstrated, isolator can improve insulation in ranges [50 Hz, 180 Hz] [260 400 by 15 dB 25 dB, respectively, contrast conventional with same first frequency.
Язык: Английский
Процитировано
2