Journal of Low Frequency Noise, Vibration and Active Control最新文献_第5页

Stability and analysis of the vibrating motion of a four degrees-of-freedom dynamical system near resonance 接近共振时四自由度动力系统振动运动的稳定性与分析

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-01-04 DOI: 10.1177/14613484231221483

T. Amer, A. Ismail, Mohamed O Shaker, W. Amer, Hamouda A Dahab

{"title":"Stability and analysis of the vibrating motion of a four degrees-of-freedom dynamical system near resonance","authors":"T. Amer, A. Ismail, Mohamed O Shaker, W. Amer, Hamouda A Dahab","doi":"10.1177/14613484231221483","DOIUrl":"https://doi.org/10.1177/14613484231221483","url":null,"abstract":"This article investigates the impact of three harmonically external moments on the motion of a four-degrees-of-freedom (DOF) nonlinear dynamical system composed of a double rigid pendulum connected to a nonlinear spring with linear damping. In light of the system’s generalized coordinates, the governing system (GS) of motion is derived using Lagrange’s equations. With the use of the multiple-scales method (MSM), the approximate solutions (AS) of the equations of this system are obtained up to a higher order of approximation, maybe the third order. Within the framework of the absence of secular terms, the conditions of solvability are obtained. Accordingly, the different resonance cases are categorized, and three of them are investigated simultaneously. Thus, these conditions are updated in preparation for achieving the modulation equations (ME) for the examined system. The numerical solutions (NS) of the GS are achieved using the algorithms of fourth-order Runge–Kutta (4RK), which are compared with the AS, which displays their high degree of consistency and demonstrates the precision of the MSM. The motion’s time history, steady-state solutions, and resonance curves are graphed to demonstrate the influence of various system physical parameters. All relevant fixed points at steady-state situations are identified and graphed in accordance with the Routh–Hurwitz criteria (RHC). Therefore, the zones of stability/instability of are checked and analyzed. Numerous real-world applications in disciplines like engineering and physics attest to the significance of the nonlinear dynamical system under study such as in shipbuilding, automotive devices, structure vibration, developing robots, and analysis of human walking.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"40 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139387111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the influence of an energy harvesting device on a dynamical system 能量收集装置对动力系统的影响

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-01-03 DOI: 10.1177/14613484231224588

T. Amer, A. Arab, A. Galal

{"title":"On the influence of an energy harvesting device on a dynamical system","authors":"T. Amer, A. Arab, A. Galal","doi":"10.1177/14613484231224588","DOIUrl":"https://doi.org/10.1177/14613484231224588","url":null,"abstract":"This article studies the motion of a three degrees-of-freedom (DOF) dynamical system, which consists of two parts, a dynamic part, and an electromagnetic harvesting device. The composition of the system depends on the magnet oscillating in the coil of this device. An electric potential is exerted because of the electromotive force to obtain energy harvesting (EH). Lagrange's equations (LE) are used to derive the system’s equations of motion (EOM), which are solved analytically up to a third-order of approximation using the multiple-scales method (MSM). These solutions are considered novel, in which the mentioned method is applied to a novel dynamical system. The gained are confirmed through comparison with the numerical solutions of the EOM to reveal a high degree of consistency. To establish the system’s solvable conditions and modulation equations (ME), three scenarios of primary external resonance are investigated simultaneously. Certain diagrams of time histories for the amplitudes and phases of the examined dynamical system are plotted to show their behaviors at any given instance of time. The Routh–Hurwitz criteria (RHC) are used to establish the stability and instability regions in light of the graphs of resonance response curves. The presence of an energy harvester in dynamic devices helps us to convert vibrational motion into electrical energy that can be exploited in several applications in a variety of daily tasks, including structural and environmental monitoring, military applications, space exploration, and remote medical sensing.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"50 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139450990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An efficient numerical simulation of chaos dynamical behaviors for fractional-order Rössler chaotic systems with Caputo fractional derivative 带有卡普托分数导数的分数阶罗斯勒混沌系统混沌动力学行为的高效数值模拟

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-12-27 DOI: 10.1177/14613484231224611

Ji-Lei Wang, Yu-Lan Wang, Xiao-Yu Li

引用次数: 0

Theoretical research on the application of impedance calculation in the design of high-intensity low-frequency acoustic generator 阻抗计算在高强度低频声发生器设计中的应用理论研究

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-12-14 DOI: 10.1177/14613484231221471

Baoguo Zhang, Mingrong Dong, Xubin Liang, Min Zhang, Tianqing Zhao, Bin He, Deyu Sun

引用次数: 0

Particle swarm optimized fuzzy proportional-integral-derivative controller-based transverse leaf spring active suspension for vibration control 基于粒子群优化模糊比例积分派生控制器的横向板簧主动悬架振动控制装置

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-12-14 DOI: 10.1177/14613484231221953

Junhong Zhang, Feiqi Long, Jiewei Lin, Xiaolong Zhu

{"title":"Particle swarm optimized fuzzy proportional-integral-derivative controller-based transverse leaf spring active suspension for vibration control","authors":"Junhong Zhang, Feiqi Long, Jiewei Lin, Xiaolong Zhu","doi":"10.1177/14613484231221953","DOIUrl":"https://doi.org/10.1177/14613484231221953","url":null,"abstract":"The transverse leaf spring (TLS) suspensions are a promising option for van vehicles due to their high load-carrying capacity and excellent handling stability. However, its ride comfort remains a major challenge. This paper investigates and compares the effects of semi-active and active control strategies to enhance the ride comfort of TLS suspensions. Firstly, a four-degree-of-freedom (4-DOF) half-car model and a multi-body dynamics (MBD) model of the TLS suspensions are established. The MBD model has higher accuracy and can describe the medium and high frequency characteristics of the TLS suspensions, such as the suspension offset frequency and the frequency response function of the body vertical acceleration (BVA). Therefore, based on the MBD half-car model with TLS suspensions, this paper proposes an optimal fuzzy PID active control strategy considering the left and right suspension coupling. The optimization objectives are the BVA, the left and right suspensions dynamic deflection, and the left and right wheels dynamic displacement. The integral absolute error is used as the evaluation criterion. The left and right fuzzy PID controllers’ parameters are obtained through particle swarm optimization. Simulation results demonstrate that the particle swarm optimization fuzzy PID active control strategy effectively controls the low-frequency vibration of the TLS suspensions and suppresses the medium- and high-frequency vibration characteristics compared with the traditional skyhook semi-active control strategy. This technology provides a reference for improving the ride comfort of the TLS suspensions.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"39 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139179023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Short remarks on the paper: A novel methodology for a time-delayed controller to prevent nonlinear system oscillations 论文简评：防止非线性系统振荡的延时控制器新方法

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-12-11 DOI: 10.1177/14613484231220540

Y. El‐Dib

引用次数: 0

Research on railway vehicle modal parameter identification method based on drop impact load 基于跌落冲击载荷的铁路车辆模态参数识别方法研究

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-12-11 DOI: 10.1177/14613484231220189

Xiaolong He, Zhengyong Duan, Yangjun Wu, Dayong Tang, Shuai Peng, Bangbei Tang

引用次数: 0

Frequency response of a mass grounded by linear and nonlinear springs in series: An exact analysis 通过线性和非线性弹簧串联接地的质量的频率响应：精确分析

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-11-30 DOI: 10.1177/14613484231219146

A. Big-Alabo

{"title":"Frequency response of a mass grounded by linear and nonlinear springs in series: An exact analysis","authors":"A. Big-Alabo","doi":"10.1177/14613484231219146","DOIUrl":"https://doi.org/10.1177/14613484231219146","url":null,"abstract":"An exact analytical solution for the frequency response of a system consisting of a mass grounded by linear and nonlinear springs in series was derived. The system is applicable in the study of beams carrying intermediate rigid mass. The exact solution was derived by naturally transforming the integral of the governing nonlinear ODE into a form that can be expressed in terms of elliptic integrals. Hence, the exact frequency–amplitude solution was derived in terms of the complete elliptic integral of the first and third kinds. Periodic solutions were found to exist for all real values of [Formula: see text] and for [Formula: see text]. On the other hand, linear or weakly nonlinear frequency–amplitude responses were found to occur during small-amplitude vibrations ([Formula: see text]), very large-amplitude vibrations with strong hardening nonlinearity ([Formula: see text] and [Formula: see text]), and for all amplitudes when [Formula: see text]. Simulations showed that the system’s periodic response is significantly influenced by the nonlinearity parameter ([Formula: see text]), linearity parameter ([Formula: see text]), and amplitude of vibration ([Formula: see text]). Besides, the existence of bifurcation points at [Formula: see text] and different values of [Formula: see text] was confirmed. Lastly, an approximate frequency solution obtained using the He’s frequency–amplitude formulation was found to produce errors less than 1.0% for a wide range of input parameters. In conclusion, the present study provides a benchmark solution for verification of other approximate solutions, and the He’s frequency–amplitude formulation can be used to obtain fast and accurate solutions for complex nonlinear systems.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"126 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139207923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on acoustic performance of new spiral sound absorbing and insulating metamaterial 新型螺旋吸声和绝缘超材料的声学性能研究

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-11-29 DOI: 10.1177/14613484231219150

Song Liu, Pan-pan Liu, Ren-jie Zhao, Jian-hua Lu, Kang Yang, Huayu Zhou, Yi-fan Du

{"title":"Study on acoustic performance of new spiral sound absorbing and insulating metamaterial","authors":"Song Liu, Pan-pan Liu, Ren-jie Zhao, Jian-hua Lu, Kang Yang, Huayu Zhou, Yi-fan Du","doi":"10.1177/14613484231219150","DOIUrl":"https://doi.org/10.1177/14613484231219150","url":null,"abstract":"Middle and low frequency band sound waves have strong penetration and diffraction abilities during the propagation process, making it difficult to attenuate. The control of middle and low frequency broadband sound waves has become a challenging topic. Therefore, it is necessary to develop new materials or structures with middle and low frequency sound absorption, insulation, and noise reduction functions. The special properties of acoustic metamaterial provide new ideas for the development of sound absorption and insulation. In order to effectively control the noise in the lower frequency band, a new spatial spiral acoustic metamaterial was designed. First, the mechanism of band gap characteristics of a new spatial spiral acoustic metamaterial is analyzed. Then, a new spatial spiral acoustic metamaterial is completed through the finite element software COMSOL Multiphysics and the calculation and analysis of sound absorption and insulation performance in the 100–2500 Hz frequency band are completed. With the help of 3D printing, the preparation of metamaterial is completed, and the comparative experimental study of sound absorption and insulation performance of spiral acoustic metamaterial is carried out to verify the accuracy of the calculation method.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139212398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Iterative singular value decomposition-based in-band denoising approach with envelope order analysis for sun gear fault diagnosis of planetary system under varying speed 基于奇异值分解的迭代带内去噪方法与包络阶次分析，用于变速条件下行星系统太阳齿轮的故障诊断

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2023-11-28 DOI: 10.1177/14613484231216266

Hongwei Fan, Jiexiang Huang, Zhongfu Ren, Xiangang Cao, Xuhui Zhang

{"title":"Iterative singular value decomposition-based in-band denoising approach with envelope order analysis for sun gear fault diagnosis of planetary system under varying speed","authors":"Hongwei Fan, Jiexiang Huang, Zhongfu Ren, Xiangang Cao, Xuhui Zhang","doi":"10.1177/14613484231216266","DOIUrl":"https://doi.org/10.1177/14613484231216266","url":null,"abstract":"The vibration signal of the planetary gear train is easily disturbed by the background noise, so the measured signal is complicated. In order to accurately extract the fault features, the resonance method has been widely used. However, even if the optimal resonance frequency band is found, the in-band noise still exists, so it is necessary to study an effective in-band denoising method. In this paper, an in-band denoising method based on Iterative Singular Value Decomposition (ISVD) is proposed for the fault diagnosis of the secondary sun gear of a planetary gear train, combined with the envelope order spectrum analysis. This method uses the enhanced Wavelet Packet Transform Spectral Kurtosis (WPTSK) to determine the best frequency band for the signal, and uses the ISVD method to realize the signal denoising. It sets a threshold to avoid the destruction of the useful information caused by the excessive iteration, and uses the relationship between the singular values and frequency components to reconstruct the denoised signal. Finally, the signal is converted to the fault characteristic order domain by resampling to identify the fault type of the sun gear from the envelope order spectrum. The simulation and experimental results show that compared with the Empirical Mode Decomposition (EMD) and Variational Mode Decomposition (VMD), the ISVD can effectively suppress the in-band noise and more accurately extract the fault characteristic order of the secondary sun gear under varying speed.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"176 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139226453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0