Article
Chemistry, Physical
Chaoming Shen, Jie Huang, Zexin Zhang, Jingya Xue, Denghui Qian
Summary: This paper proposes a phononic crystal board structure for low-frequency vibration control in ship power systems. The band structure and displacement fields of the structure are calculated using the finite element method, and the band gap characteristics are studied. The results show that the structure has a multi-stage elastic wave band gap, which can inhibit the transmission of flexural waves and isolate low-frequency flexural vibration.
Article
Mechanics
Qingsong Feng, Zhou Yang, Wenjie Guo, Jian Yang, Jianwei Yan, Jianfei Lu
Summary: The article introduces a design concept using an amplitude magnification mechanism to enhance the working capacity of vibration suppression devices, and reveals the relationship between the amplitude magnification factor and the working capacity of the device through in-depth analysis, providing important design guidelines for vibration suppression devices.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2022)
Article
Engineering, Mechanical
Qian Geng, Lingyi Kong, Xiongwei Yang, Zhushan Shao, Yueming Li
Summary: This study proposes an easy-to-implement design of a phononic crystal pipe that utilizes attached sleeves to suppress flexural vibration. By utilizing the mechanism of Bragg scattering, a flexural wave bandgap can be obtained through periodic changes in the cross section of the sleeved pipe. The installation of the sleeves simultaneously adds mass and stiffness, resulting in parabolic variations in the bandgap edge frequencies against sleeve dimensions. The asynchronous recovery of the two frequency loci causes the bandgap to close when the sleeve covers approximately half the length of the unit cell. This feature is not observed in analyses of binary phononic crystal pipes. Equivalent models are proposed to discuss the predicted variations, and the singular dependence of bandgap closure on sleeve length is theoretically explained. Experiments validate the feasibility of attaching sleeves for flexural vibration suppression of pipes. The proposed design effectively attenuates vibration energy within the intended bandgap.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Acoustics
Buliang Xie, Meiping Sheng, Minqing Wang, Zhiwei Guo, Shuai Wang, Qiaojiao Li
Summary: In this study, ultralow-frequency band gaps are achieved to suppress the propagation of ultralow-frequency flexural waves by designing beams with periodically attached quasi-zero-stiffness (QZS) resonators. The study investigates the effect of stiffness ratio on the bandgap characteristic and demonstrates that the band gaps can be easily transferred to lower or even ultralow frequencies without weakening the static stiffness of the resonators. Furthermore, the study explores the flexural wave propagation in locally resonant beams consisting of multiple periodic arrays of QZS resonators and shows that differential design of bandgap frequencies can be easily realized to obtain broadband flexural wave suppression performance.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Materials Science, Multidisciplinary
Jiang-Hai Wu, Yu-Dong Sun, Ming-Zhu Su, Xia-Ying Hao, Tao He
Summary: Two types of periodic composite pipes with support or dynamic vibration absorber are designed based on the theory of phononic crystals. The axial vibration and band gaps of the composite fluid-filled pipe are calculated using the transfer matrix method and Bloch wave theory. The results show that the stop bands frequency of velocity responses are in good agreement with the band gap, and the length of a single cell affects the starting frequency and width of the band gaps.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Jiang-hai Wu, Hong-zhen Zhu, Yu-dong Sun, Zhi-yong Yin, Ming-zhu Su
Summary: The study focuses on the application of dynamic vibration absorbers in pipe systems, using periodically attached DVAs to reduce vibrations in a broader frequency band. Analysis was conducted on wave propagation in the vibration system, band-gap formation mechanisms, and the impact of system parameters on band-gap behavior, ultimately leading to more effective control of pipe vibration.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2021)
Article
Engineering, Civil
Linyun Zhou, Wenwen Han, Shui Wan
Summary: This article investigates the band gap structure of elastic metamaterials, focusing on the design challenges of lightweight and low frequency band gaps. The use of inerter-based dynamic vibration absorbers is proposed to achieve low frequency band gaps.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Wenjie Guo, Xian Hong, Wenjun Luo, Pengfei Zhang, Jian Yang, Jianwei Yan
Summary: In this study, an enhanced multiple dynamic vibration absorber (EMDVA) is proposed to achieve multi-broadband vibration reduction of functionally graded material beams. The dispersion and vibration transmission characteristics of the structure are investigated using the energy method and nullspace technique. The results show that the proposed EMDVA has a wider damping band and stronger attenuation performance compared to the conventional MDVA.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2023)
Article
Engineering, Mechanical
Long Zhao, Ze-Qi Lu, Hu Ding, Li-Qun Chen
Summary: This study proposes an approach to explore the band energy structures of elastic metamaterials using the Hamilton principle, Bloch theorem, and finite-element method. Experimental verification on ultralow frequency metamaterials with nonlinear resonators confirms the broadband isolation of longitudinal and transverse waves.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Hong-yun Yang, Shu-liang Cheng, Xiao-feng Li, Qun Yan, Bin Wang, Ya-jun Xin, Yong-tao Sun, Qian Ding, Hao Yan, Qing-xin Zhao
Summary: This paper proposes a metamaterial structure with special characteristics to attenuate elastic wave propagation in the mid and low frequency range. Numerical studies show that the structure exhibits ultra-wide band gaps and can open multiple band gaps by adding support structures. The vibration transmission loss of the structure is analyzed using finite element method, and its control performance in periodic structures is simulated, demonstrating its potential in practical applications.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Civil
Lei Xiao, Oreste S. Bursi, Meng Wang, Satish Nagarajaiah, Feifei Sun, Xiu-Li Du
Summary: This paper proposes two novel configurations of metamaterial beams, namely monatomic and diatomic, by combining negative stiffness absorbers (NSAs) and rotation of flexural beams. The advantage of using rotation instead of transversal deformation for achieving low-frequency band gap is acknowledged. The behavior of the rotational unit cell with NSAs is systematically investigated, considering parameters such as negative stiffness ratio, outrigger length, and damping ratio. Moreover, the damping magnification effect of NSAs provides substantial damping ratios for the passband. In this way, a wider band gap can be achieved through the band-gap merging effect in the proposed diatomic configuration, mitigating waves due to NSAs' damping magnification effect.
ENGINEERING STRUCTURES
(2023)
Article
Crystallography
Peng Zhao, Lili Yuan, Tingfeng Ma, Hanxing Wei
Summary: This paper proposes a new type of phononic crystal beam with an adjustable band gap to efficiently attenuate low-frequency flexural vibration propagation. The study shows that the elastic foundation and axial stress have a significant influence on the band gap, and the temperature field can be used to regulate the location and width of the band gaps effectively. The results provide theoretical and numerical support for understanding and optimizing the design of composite vibration isolation beams.
Article
Physics, Applied
Anchen Ni, Zhifei Shi
Summary: In this work, a novel inertial amplified topological metamaterial beam is proposed to overcome the large mass limitation for low-frequency topologically protected interface modes. The dynamic characteristics of the system are investigated through detailed analytical and numerical studies. The existence of the topologically protected interface modes is verified through transmission simulation. The lower-frequency Dirac cone and wider local resonance bandgaps are obtained without sacrificing total stiffness or increasing total mass.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Crystallography
Zexin Zhang, Denghui Qian, Peng Zou
Summary: A new type of phononic crystal beam structure is constructed to solve the vibration and noise control problems in engineering fields. The vibration modes of the band structure, the critical point of the band gap, and the vibration transmission of the finite structure are estimated using the finite element method and the Bloch theorem, and then the band gap characteristics of the structure are comprehensively studied. Reasonable parameter design can achieve vibration and noise control in a certain frequency range. The advantages of the double-layer beam in vibration reduction and noise reduction are shown by comparing it with the single-layer beam with the same parameters. The findings of this study offer a fresh concept for ship engineering disciplines including vibration and noise reduction technology.
Article
Engineering, Mechanical
Yong Xiao, Shuaixing Wang, Yongqiang Li, Jihong Wen
Summary: This work aims to develop efficient formulas for bandgap estimation and design of metastructures to control vibration and noise of mechanical structures. The closed-form formulas developed can accurately estimate bandgaps, design improved bandgaps, and their broad applicability is numerically verified in various beam-type metastructures with different scales.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Physics, Applied
Hao Zhang, Yong Xiao, Jihong Wen, Dianlong Yu, Xisen Wen
APPLIED PHYSICS LETTERS
(2016)
Article
Acoustics
Lingzhi Huang, Yong Xiao, Jihong Wen, Hao Zhang, Xisen Wen
JOURNAL OF SOUND AND VIBRATION
(2018)
Article
Acoustics
Haibin Yang, Yong Xiao, Honggang Zhao, Jie Zhong, Jihong Wen
JOURNAL OF SOUND AND VIBRATION
(2019)
Article
Physics, Applied
Fei Wu, Yong Xiao, Dianlong Yu, Honggang Zhao, Yang Wang, Jihong Wen
APPLIED PHYSICS LETTERS
(2019)
Article
Mechanics
Jiajia Guo, Yong Xiao, Shufeng Zhang, Jihong Wen
COMPOSITE STRUCTURES
(2019)
Article
Physics, Multidisciplinary
Jiajia Guo, Jianzhi Cao, Yong Xiao, Huijie Shen, Jihong Wen
Article
Physics, Applied
Hao Zhang, Shengbing Chen, Zongzheng Liu, Yubao Song, Yong Xiao
APPLIED PHYSICS EXPRESS
(2020)
Article
Acoustics
Yong Xiao, Jihong Wen
JOURNAL OF SOUND AND VIBRATION
(2020)
Article
Engineering, Mechanical
Yong Xiao, Jianzhi Cao, Shuaixing Wang, Jiajia Guo, Jihong Wena, Hao Zhang
Summary: Recent studies have shown the promising applications of plate-type metastructures in low-frequency sound insulation, addressing key issues such as efficient prediction of sound transmission loss (STL), understanding unusual STL behavior, and designing parameters for optimal STL. Analysis of dynamic surface mass density and parametric analysis provide insights into predicting and optimizing the sound insulation performance of metastructures. Experimental validation of design guidelines offers practical guidance for the design of sound insulation metastructures.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Physics, Applied
Shuaixing Wang, Yong Xiao, Jiajia Guo, Hao Zhang, Jihong Wen
Summary: A composite acoustic metamaterial is proposed, consisting of double layer metamaterial plates lined with porous material, which can produce very high diffuse field sound transmission loss beyond the mass law. The material has promising applications in noise control engineering due to its simple construction, light weight, and thinness. Measurements show excellent diffuse field sound transmission loss at broadband low frequencies.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Mechanical
Yong Xiao, Shuaixing Wang, Yongqiang Li, Jihong Wen
Summary: This work aims to develop efficient formulas for bandgap estimation and design of metastructures to control vibration and noise of mechanical structures. The closed-form formulas developed can accurately estimate bandgaps, design improved bandgaps, and their broad applicability is numerically verified in various beam-type metastructures with different scales.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Engineering, Mechanical
Yongqiang Li, Yong Xiao, Jiajia Guo, Zhijun Zhu, Jihong Wen
Summary: In this study, we proposed a single-phase metabeam with flexible tunability of multi-polarization modes, achieved through the design of resonators and exploitation of bandgap coupling effects. The proposed metabeam demonstrated significant three-directional vibration suppression in a broadband frequency range, even with a small added resonator weight.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Engineering, Mechanical
Jiajia Guo, Yong Xiao, Heng Ren, Huimin Chen, Dianlong Yu, Jihong Wen
Summary: Lattice truss-core sandwich plates have gained attention for their mechanical properties and multifunctionality, but their lightweight feature hampers low-frequency sound insulation. To address this, a perforated faceplate is introduced to utilize the sandwich core as an acoustic cavity, creating a double-panel metastructure with a homogeneous plate. A semi-analytical method combining effective medium theory and dynamic homogenization is developed for efficient sound transmission loss (STL) prediction. Numerical and experimental results demonstrate that the double-panel metastructure exhibits remarkable sound insulation performance within a broadband low-frequency range.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Physics, Multidisciplinary
Zhu Xi-Xi, Xiao Yong, Wen Ji-Hong, Yu Dian-Long
ACTA PHYSICA SINICA
(2016)
Article
Physics, Multidisciplinary
Wu Jian, Bai Xiao-Chun, Xiao Yong, Geng Ming-Xin, Yu Dian-Long, Wen Ji-Hong
ACTA PHYSICA SINICA
(2016)
Article
Acoustics
Sandip Chajjed, Mohammad Khalil, Dominique Poirel, Chris Pettit, Abhijit Sarkar
Summary: This paper reports the generalization of the Bayesian formulation of the flutter margin method, which improves the predictive performance by incorporating the joint prior of aeroelastic modal parameters. The improved algorithm reduces uncertainties in predicting flutter speed and can cut cost by reducing the number of flight tests.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pascal Zeise, Bernhard Schweizer
Summary: Air ring bearings are an improved version of classical air bearings, providing better damping behavior and allowing operation above the linear threshold speed of instability. However, there is a risk of dangerous vibrations in certain rotor systems, which can be addressed by considering ring tilting effects.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Zbynek Sika, Jan Krivosej, Tomas Vyhlidal
Summary: This paper presents a novel design of a compact six degrees of freedom active vibration absorber with six identical eigenfrequencies. The objective is to completely suppress the vibration of a machine structure with six motion components. By utilizing a Stewart platform structure equipped with six active legs, a spatial unifrequency absorber with six identical eigenfrequencies is achieved. The design is optimized using a correction feedback and active delayed resonator feedback.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kai Li, Yufeng Liu, Yuntong Dai, Yong Yu
Summary: This paper presents a novel light-powered self-oscillating liquid crystal elastomer (LCE) bow that can self-oscillate continuously and periodically under steady illumination. The dynamics of the LCE bow are theoretically investigated and numerical calculations predict its motion regimes. The suggested LCE bow offers potential advantages in terms of simple structure, customizable size, flexible regulation, and easy assembly.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Carmelo Rosario Vindigni, Giuseppe Mantegna, Calogero Orlando, Andrea Alaimo
Summary: In this study, a simple adaptive flutter suppression system is designed to increase the operative speed range of a wing-aileron aeroelastic plant. The system achieves almost strictly passivity by using a parallel feed-forward compensator implementation and the controller parameters are optimized using a population decline swarm optimization algorithm. Numerical simulations prove the effectiveness of the proposed simple adaptive flutter suppression architecture in different flight scenarios.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Nicco Ulbricht, Alain Boldini, Peng Zhang, Maurizio Porfiri
Summary: The quantification of fluid-structure interactions in marine structures is crucial for their design and optimization. In this study, an analytical solution for the free vibration of a bidirectional composite in contact with a fluid is proposed. By imposing continuity conditions and boundary conditions, the coupled fluid-structure problem is solved and applied to sandwich structures in naval construction, offering insights into the effects of water on mode shapes and through-the-thickness profiles of displacement and stress.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Shahram Hadian Jazi, Mostafa Hadian, Keivan Torabi
Summary: Non-uniformity and damage are the main focus in studying vibrations of beam elements. An exact closed-form explicit solution for the transverse displacement of a nonuniform multi-cracked beam is introduced using generalized functions and distributional derivative concepts. By introducing non-dimensional parameters, the motion equation and its closed-form solution are obtained based on four fundamental functions. The impact of crack count, location, intensity, and boundary conditions on natural frequency and mode shape is evaluated through numerical study.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Eugenio Tramacere, Marius Pakstys, Renato Galluzzi, Nicola Amati, Andrea Tonoli, Torbjoern A. Lembke
Summary: This paper proposes the experimental stabilization of electrodynamic maglev systems by means of passive components, providing key technological support for the Hyperloop concept of high-speed and sustainable transportation.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Pengfei Deng, Xing Tan, He Li
Summary: In this paper, the authors improve the surface morphology method and study the bit-rock interaction model between the rock and the PDC bit, taking into account the impact of blade shape and cutter arrangement. They establish a dynamic model for a deep drilling system equipped with an arbitrary shape PDC bit and propose a stability prediction method. The results show that the shape of the blades and arrangement of the cutters on the PDC bit significantly affect the nonlinear vibration of the drilling system.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Salvador Rodriguez-Blanco, Javier Gonzalez-Monge, Carlos Martel
Summary: In modern LPT designs, the simultaneous presence of forced response and flutter in different operation regimes is unavoidable. Recent evidence suggests that the traditional linear superposition method may be overly conservative. This study examines the flutter and forced response interaction in a realistic low pressure turbine rotor and confirms that the actual response is much smaller than that predicted by linear superposition.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Kabilan Baskaran, Nur Syafiqah Jamaluddin, Alper Celik, Djamel Rezgui, Mahdi Azarpeyvand
Summary: This study investigates the impact of the number of blades on the aeroacoustic characteristics and aerodynamic performance of propellers used in urban air mobility vehicles. The results show that different blade numbers exhibit distinct noise levels, providing valuable insights for further research on propeller noise and aerodynamic performance.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Yongbo Peng, Peifang Sun
Summary: This study focuses on the reliability-based design optimization (RBDO) of the tuned mass-damper-inerter (TMDI) system under non-stationary excitations. The performance of the optimized TMDI system is evaluated using probability density evolution analysis. The results demonstrate the technical advantages of TMDI, including high vibration mitigation performance, considerable mass reduction, and less stroke demand.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Guanfu Lin, Zhong-Rong Lu, Jike Liu, Li Wang
Summary: Vision-based measurement is an emerging method that enables full-field measurement with non-contact and high spatial resolution capabilities. This paper presents a single-camera method for measuring out-of-plane vibration of plate structures using motion-parametric homography to capture image variation and displacement response.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Bronislaw Czaplewski, Mateusz Bocian, John H. G. Macdonald
Summary: Despite two decades of study, there is currently no model that can quantitatively explain pedestrian-generated lateral forces. This research proposes a foot placement control law based on empirical data to calibrate and generalize the rigid-leg inverted pendulum model (IPM) for predicting lateral structural stability.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Justine Carpentier, Jean-Hugh Thomas, Charles Pezerat
Summary: This paper proposes an improved method for the identification of vibration sources on a car window using the corrected force analysis technique. By redefining inverse methods in polar coordinates, more accurate results can be obtained.
JOURNAL OF SOUND AND VIBRATION
(2024)
