Journal of Low Frequency Noise, Vibration and Active Control最新文献_第4页

Analysis of vibration reduction performance of vibration isolation system based on particle damping 基于颗粒阻尼的隔振系统减振性能分析

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-26 DOI: 10.1177/14613484241235807

Chunsheng Song, Yurun Han, Bo Jia, Xuechun Xiong, Youliang Jiang, Peng Wang, Ya-ru Liang, Hai-ning Fang

{"title":"Analysis of vibration reduction performance of vibration isolation system based on particle damping","authors":"Chunsheng Song, Yurun Han, Bo Jia, Xuechun Xiong, Youliang Jiang, Peng Wang, Ya-ru Liang, Hai-ning Fang","doi":"10.1177/14613484241235807","DOIUrl":"https://doi.org/10.1177/14613484241235807","url":null,"abstract":"Taking ship vibration isolation systems as the research subject, the particle damper was applied to ship vibration isolation systems to study its vibration reduction performance. The energy dissipation mechanism of particle dampers is analyzed, and an energy dissipation calculation model is derived. The combined method of simulation and experimentation is employed to study the influence of parameters such as particle material, filling rate, particle diameter, and collision coefficient of restitution on the vibration reduction performance of particle dampers. The impact laws of these parameters are summarized, demonstrating that particle dampers can produce excellent vibration reduction performance when applied in ship vibration isolation systems, and reasonable parameter recommendations are provided. Response surface method (RSM) is used to fit an accurate energy dissipation prediction model and calculate the optimal performance parameters. This paper serves as a valuable reference for the parameter design, optimization, and practical engineering applications of particle dampers.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"114 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140428941","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 stiffness matching strategy of longitudinal sleeper and fastener to reduce tunnel wall vibration 减少隧道壁振动的纵向枕木和扣件刚度匹配策略研究

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-21 DOI: 10.1177/14613484241233908

Kuang He, Yuanpeng He, Yuyang Yao, Jian Han, Xinbiao Xiao, Maoru Chi

{"title":"Study on stiffness matching strategy of longitudinal sleeper and fastener to reduce tunnel wall vibration","authors":"Kuang He, Yuanpeng He, Yuyang Yao, Jian Han, Xinbiao Xiao, Maoru Chi","doi":"10.1177/14613484241233908","DOIUrl":"https://doi.org/10.1177/14613484241233908","url":null,"abstract":"With the increase of the running time of the subway system, long-term use will lead to the reduction of damping, the change of the operating state of the wheels and the track, and the effect of vibration damping measures will gradually weaken. In order to maintain a low level of environmental vibration in vibration sensitive areas, the reconstruction of some existing lines with high level vibration is imminent. In order to solve this problem, this paper focuses on the reconstruction of the existing line of longitudinal sleeper track, which is commonly used in the middle and high level vibration reduction measure in the subway. Because of the high cost of reconstruction of the slab and its lower part, this paper tries to realize the reconstruction of the existing longitudinal sleeper track by changing the fastener system. In this paper, the environmental vibration prediction model of longitudinal sleeper track is established by using the theory of infinite long period structure and the 2.5-dimensional finite element and boundary element (2.5D FE-BE) environmental vibration prediction model. The validity of the numerical model is determined by comparing the field experiment with the numerical simulation. On the basis of the above, the stiffness matching of longitudinal sleeper and fastener is explored by using the verified numerical model. The reasons for the poor vibration reduction effect of the existing longitudinal sleeper matching floating rail fastener (low stiffness) are analyzed. And the matching strategy of the supporting stiffness for vibration reduction of longitudinal sleeper and fastener are summarized.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"15 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140444865","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

Simulation and experimental study on contact pressure distribution of contact interface in single and double bolted connection structures 单螺栓和双螺栓连接结构中接触界面接触压力分布的模拟和实验研究

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-17 DOI: 10.1177/14613484231209300

Jingsong Xie, Zhengjie Lu, Jianbin Cao, Zhibin Guo, Xiao Kang, Zhikang Zhang, Tiantian Wang

{"title":"Simulation and experimental study on contact pressure distribution of contact interface in single and double bolted connection structures","authors":"Jingsong Xie, Zhengjie Lu, Jianbin Cao, Zhibin Guo, Xiao Kang, Zhikang Zhang, Tiantian Wang","doi":"10.1177/14613484231209300","DOIUrl":"https://doi.org/10.1177/14613484231209300","url":null,"abstract":"Bolted joints play an important role in aerospace, machinery manufacturing, weapons and other fields, and the contact pressure distribution at the connection interface seriously affects the service performance of the bolts. Contact pressure analysis is an essential basis and reference for structural design, calibration, inspection, and safety monitoring of bolted connection structures. Considering the preload force and frictional contact between the joint components, a block mapping hexahedron mesh generation and finite element modeling method for bolted connections is presented, and the finite element models of single and double bolted structures are constructed. Then, an experimental test platform for measuring contact pressure distribution is constructed. Comparison of finite element analysis results with experimental results for the contact pressure distribution in the single and double-bolted joints; the root mean squared error of contact pressure distribution is less than 5%, which verifies the effectiveness of the finite element models. After that, the models are used to study the contact pressure distribution in single-bolted joints and contact pressure coupling effect of double-bolted joints, and the normal stress distribution features within members and contact pressure distribution contour are revealed for single and double-bolted joint. Finally, the finite element models are adopted to investigate the effects of the clamping length, preload, material properties, hole clearance, and bolt size on contact pressure distribution in single-bolted joints. The coupling effect of contact pressure distribution in double-bolted joints under different preloads and geometric parameters are also examined.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"58 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960593","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

Instantaneous frequency identification for nonstationary signals of time-varying structures using enhanced synchroextracting wavelet transform and dynamic optimization 利用增强型同步提取小波变换和动态优化对时变结构的非稳态信号进行瞬时频率识别

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-16 DOI: 10.1177/14613484241233392

Yang Jiang, Xinyu Wang, Xi-Ling Zhang, Kai Zhang, Jing-Liang Liu

{"title":"Instantaneous frequency identification for nonstationary signals of time-varying structures using enhanced synchroextracting wavelet transform and dynamic optimization","authors":"Yang Jiang, Xinyu Wang, Xi-Ling Zhang, Kai Zhang, Jing-Liang Liu","doi":"10.1177/14613484241233392","DOIUrl":"https://doi.org/10.1177/14613484241233392","url":null,"abstract":"Civil engineering structures under ambient excitations are essentially time-varying and nonlinear structural systems and the resultant response signals exhibit non-stationarity. To reveal the time-varying characteristics of non-stationary signals, time frequency analysis methods with high resolutions are required. Although synchroextracting short time Fourier transform (SESTFT) is able to generate more energy concentrated time frequency representations and allow signal reconstruction, its major disadvantage is the window function is fixed. To address this issue, an enhanced synchroextracting wavelet transform (ESEWT) method is proposed to refine frequency bands by combing synchroextracting and continuous wavelet transform. After that, dynamic optimization (DO) is used to extract instantaneous frequency (IF) curves within the refined frequency bands. Two numerical examples and an experimental study case are investigated to illustrate the effectiveness and accuracy of the proposed method. The results demonstrate that the proposed ESEWT is capable of extracting frequency bands more accurately and its combination with DO identifies IFs of non-stationary signals better than current time frequency analysis methods such as SESTFT.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"11 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139961043","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

Response analysis of the vibro-impact system under fractional-order joint random excitation 分数阶联合随机激励下振动冲击系统的响应分析

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-12 DOI: 10.1177/14613484241230832

Jun Wang, Zijian Yang, Wanqi Sun, Jianchao Zhang

{"title":"Response analysis of the vibro-impact system under fractional-order joint random excitation","authors":"Jun Wang, Zijian Yang, Wanqi Sun, Jianchao Zhang","doi":"10.1177/14613484241230832","DOIUrl":"https://doi.org/10.1177/14613484241230832","url":null,"abstract":"As a kind of good damping material, viscoelastic material is widely used in machinery, civil engineering, and other fields. In this paper, the viscoelasticity of the system is described by fractional differentiation. The dynamic response of a unilateral vibro-impact system with a viscoelastic oscillator under joint random excitation is studied, in which joint random excitation is composed of additive and multiplicative white noise. The fractional-order derivative was calculated based on Caputo’s definition, and the fractional derivative was equivalent to the corresponding linear damping force and linear restoring force. As a result, a new random system without fractional-order terms was obtained. A non-smooth transformation was introduced, which was equivalent to the original system to a new system without a velocity jump. The steady-state probability density functions of fractional-order vibro-impact systems under joint random excitation are solved by using the random average method and non-smooth transformation. In addition, the effects of parameters on the steady-state response of the system are analyzed.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"99 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139842349","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

Response analysis of the vibro-impact system under fractional-order joint random excitation 分数阶联合随机激励下振动冲击系统的响应分析

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-12 DOI: 10.1177/14613484241230832

Jun Wang, Zijian Yang, Wanqi Sun, Jianchao Zhang

{"title":"Response analysis of the vibro-impact system under fractional-order joint random excitation","authors":"Jun Wang, Zijian Yang, Wanqi Sun, Jianchao Zhang","doi":"10.1177/14613484241230832","DOIUrl":"https://doi.org/10.1177/14613484241230832","url":null,"abstract":"As a kind of good damping material, viscoelastic material is widely used in machinery, civil engineering, and other fields. In this paper, the viscoelasticity of the system is described by fractional differentiation. The dynamic response of a unilateral vibro-impact system with a viscoelastic oscillator under joint random excitation is studied, in which joint random excitation is composed of additive and multiplicative white noise. The fractional-order derivative was calculated based on Caputo’s definition, and the fractional derivative was equivalent to the corresponding linear damping force and linear restoring force. As a result, a new random system without fractional-order terms was obtained. A non-smooth transformation was introduced, which was equivalent to the original system to a new system without a velocity jump. The steady-state probability density functions of fractional-order vibro-impact systems under joint random excitation are solved by using the random average method and non-smooth transformation. In addition, the effects of parameters on the steady-state response of the system are analyzed.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"15 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139782214","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

Assessment of adjacent building vibrations induced by metro with a multigrid fully coupled method 用多网格全耦合方法评估地铁引起的邻近建筑物振动

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-04 DOI: 10.1177/14613484241230437

Qihao Wang, Xiaopei Cai, Yanli Qi, Qian Zhang, Xueyang Tang

{"title":"Assessment of adjacent building vibrations induced by metro with a multigrid fully coupled method","authors":"Qihao Wang, Xiaopei Cai, Yanli Qi, Qian Zhang, Xueyang Tang","doi":"10.1177/14613484241230437","DOIUrl":"https://doi.org/10.1177/14613484241230437","url":null,"abstract":"The vibrations generated by metro operations can cause structural damage and discomfort to occupants adjacent to the metro lines. In this study, a multigrid fully coupled method of metro vehicle-track-station-soil-building systems is proposed to predict and assess building vibrations before construction. This approach facilitates the efficient calculation of the fully coupled system, while ensuring precise simulations through the utilization of multigrid techniques for wheel-rail contact, track, station, soil, and building components. Using the newly built opera theatre along Beijing metro line 4 as a case, the study demonstrates that the multigrid fully coupled model can predict the dynamics characteristics of metro-induced vibrations and distribution with high accuracy compared with the field tests. Specifically, it was found that metro operations could result in vibrations exceeding specified limits in the opera theatre, particularly at 10∼40 Hz (the building’s natural frequency) and 60∼80 Hz (the main frequency band of vibration caused by the metro). Finally, the mechanism of excessive vibration and the effectiveness of targeted vibration mitigation measures were analyzed with the proposed method. These findings have promising implications for wider applications in environmental assessments and control strategies for new metro lines or vibration-sensitive buildings.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"18 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139867002","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

Assessment of adjacent building vibrations induced by metro with a multigrid fully coupled method 用多网格全耦合方法评估地铁引起的邻近建筑物振动

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-02-04 DOI: 10.1177/14613484241230437

Qihao Wang, Xiaopei Cai, Yanli Qi, Qian Zhang, Xueyang Tang

{"title":"Assessment of adjacent building vibrations induced by metro with a multigrid fully coupled method","authors":"Qihao Wang, Xiaopei Cai, Yanli Qi, Qian Zhang, Xueyang Tang","doi":"10.1177/14613484241230437","DOIUrl":"https://doi.org/10.1177/14613484241230437","url":null,"abstract":"The vibrations generated by metro operations can cause structural damage and discomfort to occupants adjacent to the metro lines. In this study, a multigrid fully coupled method of metro vehicle-track-station-soil-building systems is proposed to predict and assess building vibrations before construction. This approach facilitates the efficient calculation of the fully coupled system, while ensuring precise simulations through the utilization of multigrid techniques for wheel-rail contact, track, station, soil, and building components. Using the newly built opera theatre along Beijing metro line 4 as a case, the study demonstrates that the multigrid fully coupled model can predict the dynamics characteristics of metro-induced vibrations and distribution with high accuracy compared with the field tests. Specifically, it was found that metro operations could result in vibrations exceeding specified limits in the opera theatre, particularly at 10∼40 Hz (the building’s natural frequency) and 60∼80 Hz (the main frequency band of vibration caused by the metro). Finally, the mechanism of excessive vibration and the effectiveness of targeted vibration mitigation measures were analyzed with the proposed method. These findings have promising implications for wider applications in environmental assessments and control strategies for new metro lines or vibration-sensitive buildings.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"2015 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139807348","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 asymmetric model two-dimensional oscillator 非对称模型二维振荡器

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-01-24 DOI: 10.1177/14613484241228749

B. Rath, VS Erturk, J. Asad, P. Mallick, R. Jarrar

引用次数: 0

Study on weak sound signal separation and pattern recognition under strong background noise in marine engineering 海洋工程中强背景噪声下的弱声信号分离与模式识别研究

Journal of Low Frequency Noise, Vibration and Active Control Pub Date : 2024-01-19 DOI: 10.1177/14613484241226524

Song Liu, Jiantong Gao, Huayu Zhou, Kang Yang, Panpan Liu, Yifan Du

{"title":"Study on weak sound signal separation and pattern recognition under strong background noise in marine engineering","authors":"Song Liu, Jiantong Gao, Huayu Zhou, Kang Yang, Panpan Liu, Yifan Du","doi":"10.1177/14613484241226524","DOIUrl":"https://doi.org/10.1177/14613484241226524","url":null,"abstract":"The extraction of weak acoustic signals under strong background noise is of great significance in the applications of target identification and localization. In this paper, the pulse signal with high randomness is set as the weak signal sound source, random noise and sine sound are used as the background noise. Under the condition of a signal-to-noise ratio of −20 dB, combined with blind source separation and neural network methods, the collected observation signals are subjected to weak sound signal separation and recognition research. The optimization method of centralization and scaling processing is used to eliminate the unfavorable influence of the uncertainty of the separated signal amplitude caused by the blind source separation method on the pattern recognition. The recognition result is verified by the combination of “weak impulse acoustic signal” and “random noise signal,” and the output vector (0.99 0.01 0.01) approaches (1 0 0), which is recognized as impulse acoustic signal. By combining blind source separation and neural network methods, the separation and identification of weak pulse signals under the condition of a signal-to-noise ratio of −20 dB can be achieved.","PeriodicalId":504307,"journal":{"name":"Journal of Low Frequency Noise, Vibration and Active Control","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139525731","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