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Journal articles on the topic 'Vibration period'

Author: Grafiati

Published: 24 June 2021

Last updated: 29 July 2025

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1

Ryazancev, V., M. Gerasimov, and Y. Brazhnik. "REDUCTION OF DIFFERENTLY DIRECTIONAL VIBRATIONS TO ASYMMETRICAL BY CHANGING THE RATIO OF VALUES COMPOSING THE DRIVING FORCE." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6, no. 5 (2021): 87–94. http://dx.doi.org/10.34031/2071-7318-2021-6-5-87-94.

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Vibrating machines play a primary role in the implementation of programs in the construction and road construction kit. The improvement of vibration machines allows to significantly increase the speed of construction and road construction work. The main working unit of a vibrating machine is a vibrating device or vibrator. Currently, in the industry, vibration devices are used with circular or directional, along a certain straight line of vibrations. Further improvement of vibrating machines is carried out in the direction of creating vibration devices with asymmetric vibrations. At present, t

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Dong, Jie, Yue Yang, and Zhi-Hui Wu. "Propagation characteristics of vibrations induced by heavy-haul trains in a loess area of the North China Plains." Journal of Vibration and Control 25, no. 4 (2018): 882–94. http://dx.doi.org/10.1177/1077546318802980.

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To study heavy train-related vibration, this paper examines the world's largest heavy-freight railway – the Daqin Railway – to study the impacts of the seasonally frozen soil layer on vibrational acceleration. With increasing axle weight, the peak and mean values of the acceleration increased. Vibration acceleration attenuated the most from the shoulder to the embankment footing (51%–71%), while the vibrations at 70 m were attenuated by more than 90%. Certain measures must be taken by those living within 70 m of the railway shoulder. In addition, the acceleration peak caused by trains running

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Susastro, Susastro, and Novi Indah Riani. "Pendekatan Eksperimen Karakteristik Respon Getaran Sistem Two Degree of Freedom dengan Penambahan Independent Dual Dynamic Vibration Absorber." R.E.M. (Rekayasa Energi Manufaktur) Jurnal 3, no. 2 (2019): 85. http://dx.doi.org/10.21070/r.e.m.v3i2.1729.

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Vibration is one of the problems that must be reduced in a vehicle. There are many ways to reduce vibration in vehicles, one of them is by adding Dynamic vibration absorber (DVA). While Dual Dynamic vibration absorber (dDVA) is a DVA period that is able to move in the translational direction given to the system to reduce translation vibration and when there is resonance. Translation DVA is an additional type of time used to reduce the vibration of the translation direction. So far there is not much research related to the use of translational DVA to reduce rotational vibrations as well as tran

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Wang, Rongrong, Bingnan Wang, Yachao Wang, Wei Li, Zhongbin Wang, and Maosheng Xiang. "Time-Varying Vibration Compensation Based on Segmented Interference for Triangular FMCW LiDAR Signals." Remote Sensing 13, no. 19 (2021): 3803. http://dx.doi.org/10.3390/rs13193803.

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Frequency modulation continuous wave (FMCW) light detection and ranging (LiDAR) 3D imaging system may suffer from time-varying vibrations which will affect the accuracy of ranging and imaging of a target. The system uses only a single-period FMCW LiDAR signal to measure the range of each spot; however, traditional methods may not work well to compensate for the time-varying vibrations in a single period because they generally assume the vibration velocity is constant. To solve this problem, we propose a time-varying vibration compensation method based on segmented interference. We first derive

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Anzani, Yunita Ayudhia Anzani, Syahri Ramadhanti, and Noval Mulya Dava. "Analysis of Factors Affecting Period on GHS Using PhET Simulation." Sunan Kalijaga Journal of Physics 5, no. 2 (2023): 63–68. https://doi.org/10.14421/physics.v5i2.3994.

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Physics is one of the sciences that is studied based on facts, natural phenomena, ideas and results of experiments/experiments. Physics is a science that is closely related to everyday life, one of which is found in Simple Harmonic Motion which discusses pendulums on clocks and strings on guitars. Simple vibrations (GHS) are an example of periodic motion when the amplitude of vibrations in the system is relatively small and the displacement is less than 15°. GHS is a regular alternating motion through the equilibrium point and the number of vibrations in one second is always constant. If the m

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Chang, Seongkyu. "Active Mass Damper for Reducing Wind and Earthquake Vibrations of a Long-Period Bridge." Actuators 9, no. 3 (2020): 66. http://dx.doi.org/10.3390/act9030066.

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An active mass damper (AMD) was developed that uses a linear motor and coil spring to reduce the vertical vibration of a long-period cable-stayed bridge subjected to wind and earthquake loads. A scaled-down bridge model and AMD were fabricated, and the control effect of the AMD was investigated experimentally and analytically. The AMD was controlled via a linear quadratic Gaussian algorithm, which combines a linear quadratic regulator and Kalman filter. The dynamic properties were investigated using a 1/10 scale indoor experimental model, and the results confirmed that the measured and analyti

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Khomenko, Andrei P., Sergey K. Kargapoltsev, and Andrey V. Eliseev. "Development of Approaches to Creation of Active Vibration Control System in Problems of the Dynamics for Granular Media." MATEC Web of Conferences 148 (2018): 11004. http://dx.doi.org/10.1051/matecconf/201814811004.

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The article deals with the development of mathematical models and evaluation criteria of the vibration field in the dynamic interactions of the elements of the vibrational technological machines for the processes of vibrational strengthening of long-length parts with help of a steel balls working medium. The study forms a theoretical understanding of the modes of motions of material particles in interaction with a vibrating surface of the working body of the vibration machine. The generalized approach to the assessment of the dynamic quality of the work of vibrating machines in multiple modes

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Cveticanin, L. "Period of vibration of axially vibrating truly nonlinear rod." Journal of Sound and Vibration 374 (July 2016): 199–210. http://dx.doi.org/10.1016/j.jsv.2016.03.027.

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9

An, Xue Li, Dong Xiang Jiang, Ming Hao Zhao, and Chao Liu. "Numerical Analysis of Coupled Lateral and Torsional Vibrations of a Vertical Unbalanced Rotor." Applied Mechanics and Materials 20-23 (January 2010): 352–57. http://dx.doi.org/10.4028/www.scientific.net/amm.20-23.352.

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A model for the coupled lateral and torsional vibrations of a vertical unbalanced rotor is developed. The equation of motion is obtained using Lagrangian dynamics without considering the external actuating forces and torque. The equation showed coupling and nonlinear interaction between the rotor lateral and torsional vibrations. Most of the earlier work on coupled vibrations has been done for the horizontal rotor model. The coupled vibrations for a vertical rotor have not been reported in the past. An attempt is made to reveal dynamic characteristics of vertical rotor. The results of the simu

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BASTRUKOV, S. I., J. W. YU, R. X. XU, and I. V. MOLODTSOVA. "RADIATIVE ACTIVITY OF MAGNETIC WHITE DWARF UNDERGOING LORENTZ-FORCE-DRIVEN TORSIONAL VIBRATIONS." Modern Physics Letters A 26, no. 05 (2011): 359–66. http://dx.doi.org/10.1142/s0217732311034761.

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We study radiative activity of magnetic white dwarf undergoing torsional vibrations about axis of its own dipole magnetic moment under the action of Lorentz restoring force. It is shown that pulsating white dwarf can convert its vibration energy into the energy of magneto-dipole emission, oscillating with the frequency equal to the frequency of Alfvén torsional vibrations, provided that internal magnetic field is decayed. The most conspicuous feature of the vibration energy powered radiation in question is the lengthening of periods of oscillating emission; the rate of period elongation is det

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Yakimova, Natalya L., Vladimir A. Pankov, Aleksandr V. Lizarev, et al. "Neurophysiological and morphological effects in the post-exposure vibration period during experimental modeling." Russian Journal of Occupational Health and Industrial Ecology, no. 5 (May 31, 2019): 284–90. http://dx.doi.org/10.31089/1026-9428-2019-59-5-284-290.

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Introduction. Vibration disease continues to occupy one of the leading places in the structure of professional pathology. In workers after the termination of contact with vibration generalization and progression of violations in an organism is noted. The pathogenetic mechanisms of the progredient course of disturbances in the nervous system in the post-contact period of vibration exposure remain insufficiently studied.The aim of the study was to test an experimental model of vibration exposure to assess the neurophysiological and morphological effects of vibration in rats in the dynamics of th

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Nguyen, Thanh Q., Thao D. Nguyen, Lam Q. Tran, and Nhi K. Ngo. "A New Insight to Vibration Characteristics of Spans under Random Moving Load: Case Study of 38 Bridges in Ho Chi Minh City, Vietnam." Shock and Vibration 2020 (November 4, 2020): 1–20. http://dx.doi.org/10.1155/2020/1547568.

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We propose a novel representative power spectrum density as a specific characteristic for showing responses of spans during a long operational period. The idea behind this method is to use the representative power spectrum density as a powerful tool to evaluate the stiffness decline of spans during their operation period. In addition, a new measurement method has been introduced to replace the traditional method of monitoring the health conditions of bridges through a periodic measurement technique. This helps to reduce costs when carrying out testing bridges. Besides, the proposed approach ca

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Flores, Raúl Salazar, Juan Maldonado Noboa, and Cesar Maldonado Noboa. "Estimation of the fundamental period of vibration of the dental clinics and the dental classroom of the Catholic University of Cuenca using environmental vibration recordings." MATEC Web of Conferences 396 (2024): 05020. http://dx.doi.org/10.1051/matecconf/202439605020.

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In the Faculty of Dentistry of the Catholic University of Cuenca, located in the city of Cuenca, province of Azuay. The lecture hall and the clinics of the faculty are built. These structures were built during 2018 and 2019. Due to the seismic events occurred in recent years, monitoring was carried out to obtain the characterization of the dynamic behaviour. The two structures are formed by a structural system based on structural steel frames (beam-column), the structure for laboratory use has metal columns filled with concrete, while the structure for classroom use has metal columns without c

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14

Pakrashi, Vikram, Biswajit Basu, and Kevin Ryan. "Rapid Assessment of Natural Periods of Large Short-Period Civil Engineering Structures." Key Engineering Materials 569-570 (July 2013): 286–93. http://dx.doi.org/10.4028/www.scientific.net/kem.569-570.286.

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Rapid assessment of large, short-period structures is extremely important for establishing structural integrity. This paper demonstrates experimental non-contact detection of consistent frequency peaks from the ambient vibration of a range of large buildings. Long distance, remote Laser Doppler Vibrometry is employed to estimate the dominant response frequencies of these large building structures from their ambient vibration. These dominant frequencies were reproducible in the frequency domain. The results demonstrate potential field applications of this method in a number of important applica

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15

Escaler, Xavier, and Toufik Mebarki. "Full-Scale Wind Turbine Vibration Signature Analysis." Machines 6, no. 4 (2018): 63. http://dx.doi.org/10.3390/machines6040063.

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A sample of healthy wind turbines from the same wind farm with identical sizes and designs was investigated to determine the average vibrational signatures of the drive train components during normal operation. The units were variable-speed machines with three blades. The rotor was supported by two bearings, and the drive train connected to an intermediate three-stage planetary/helical gearbox. The nominal 2 MW output power was regulated using blade pitch adjustment. Vibrations were measured in exactly the same positions using the same type of sensors over a six-month period covering the entir

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Chalah, Farid, Lila Chalah-Rezgui, Kamel Falek, Salah Eddine Djellab, and Abderrahim Bali. "Fundamental Vibration Period of SW Buildings." APCBEE Procedia 9 (2014): 354–59. http://dx.doi.org/10.1016/j.apcbee.2014.01.062.

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Lugovoi, V. P., and V. V. Lugovoi. "Comparative Analysis of Vibrations of Ring-Shaped Ultrasonic Concentrators." Science & Technique 20, no. 2 (2021): 121–26. http://dx.doi.org/10.21122/2227-1031-2021-20-2-121-126.

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The paper provides a comparative analysis of the influence of ring concentrator shape in ultrasonic systems on their amplitude-frequency characteristics. Devices are known in which elastic elements are used either as resonators or as working tools of ultrasonic technological systems. However, the use of elastic elements as concentrators of ultrasonic vibrations is insufficiently studied and requires comprehensive research and development of recommendations for their practical application. For this purpose, a theoretical analysis has been carried out in the paper while using the ANSYS computer

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18

Xu, Yeyin, Runchao Zhao, Yinghou Jiao, and Zhaobo Chen. "Stability and bifurcations of complex vibrations in a nonlinear brush-seal rotor system." Chaos: An Interdisciplinary Journal of Nonlinear Science 33, no. 3 (2023): 033113. http://dx.doi.org/10.1063/5.0134907.

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A brush seal has the advantages of adapting to different vibration conditions and increasing the stability of the nonlinear rotor system. In this research, the stability and bifurcations of complex vibrations in a brush-seal rotor system are studied. An analytical seal force model is obtained through the beam theory and mutual coupling dynamics of the bristles and the rotor. The interaction between the bristles and the rotor is clearly depicted by a geometric map. Periodic and chaotic vibrations as well as the corresponding amplitude–frequency characteristics are first predicted by a numerical

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19

Inel, Mehmet, Hayri Baytan Ozmen, and Bayram Tanik Cayci. "Determination of Period of RC Buildings by the Ambient Vibration Method." Advances in Civil Engineering 2019 (September 22, 2019): 1–10. http://dx.doi.org/10.1155/2019/1213078.

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Determining the dynamic properties of structures is important for understanding their seismic behaviour. Ambient vibration signal measurement is one of the approaches used to determine the period of structures. Advantages of this method include the possibility of taking real-time records and presenting nondestructive and rapid solutions. In this study, natural vibration periods are calculated by taking ambient vibration signal records from 40 buildings. The height of the building, infill wall effect, presence of seismic retrofit, and presence of damage are taken into consideration, and their e

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20

Hasibuan, Samsul Abdul Rahman Sidik. "Investigation of the Influence of Drop Panels on Natural Period of Vibration of Flat Slab Building Structures." Scholars Journal of Engineering and Technology 12, no. 06 (2024): 185–91. http://dx.doi.org/10.36347/sjet.2024.v12i06.002.

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Investigation on the influence of drop panels on the natural period of vibration of flat slab building structures has been conducted in this study. Drop panels are structural elements projected beneath slabs around columns to enhance stiffness and structural capacity. Numerical modeling was performed for flat slab building structures with and without drop panels using ETABS software. Modal analysis was employed to determine the natural vibration periods of the structures in their initial modes. The results indicate that the use of drop panels significantly reduces the natural vibration period

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Yang, Weimin, Zhongdong Fang, Jing Wang, Diyang Chen, Yanhuan Zhang, and Xingzhi Ba. "Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period." Buildings 14, no. 4 (2024): 1066. http://dx.doi.org/10.3390/buildings14041066.

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With the rapid development of metro construction, shield machines inevitably have to traverse a variety of complex geological conditions, leading to the frequent occurrence of geological disasters, equipment failures, building vibration and other problems. Vibration, as an important feature of the shield tunneling process, has received more and more attention in recent years. This paper summarizes the relevant research progress of vibration monitoring during shield construction from 2015 to 2023. It analyzes the shield vibration generation mechanism, monitoring methods and application areas. F

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Ivan, Nazarenko, and Slipetskyi Volodymyr. "ANALYSIS AND SYNTHESIS OF CREATION OF VIBRATION MACHINES WITH AN ESTIMATION OF THEIR EFFICIENCY AND RELIABILITY." Technology audit and production reserves 6, no. 1 (50) (2019): 29–31. https://doi.org/10.15587/2312-8372.2019.189057.

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<em>The analysis of processes occurring in the medium under the influence of vibrational forces is considered. The obtained results are synthesized for the development of a new class of vibration machines that provide criteria for efficiency and reliability. The main criterion for evaluating the effectiveness is adopted function of the amplitude and frequency of vibrations, which determines the speed or acceleration of the compaction process. At the same time, the logic of the stage-by-stage examination of the compaction process is proved. The first of them – the process of reconnecting

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Mo, Fan, Junfeng Xie, Shuyi Wang, et al. "Comprehensive Vibration Analysis and Modeling for ZY-3 Satellite's Lifecycle." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-1-2024 (May 10, 2024): 511–22. http://dx.doi.org/10.5194/isprs-archives-xlviii-1-2024-511-2024.

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Abstract. A stable platform environment is essential for achieving high-quality imaging and accurate attitude measurement of the ZY-3's stereo camera. It serves as the fundamental guarantee for the satellite's high geometric precision. Throughout its orbital operation, the platform encounters periodic vibrational occurrences resulting from internal load mechanics and significant external environmental variations, thereby impeding the high-fidelity collection of information by the satellite payload. The detection and modeling of vibrations are crucial tasks for the satellite ground system, as t

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Zhang, Jianjun, Qibo Ni, Jing Wang, and Feng Guo. "Transient thermal elastohydrodynamic lubrication of point contacts subjected to normal vibration." Industrial Lubrication and Tribology 68, no. 5 (2016): 536–47. http://dx.doi.org/10.1108/ilt-06-2015-0085.

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Purpose Vibration exists widely in all machineries working under high speed. The unpredictability of vibration and the change of the relative surface speed may result in difficulties in the elastohydrodynamic lubrication (EHL) analysis. By far, few studies on EHL relating to vibration have been published. The purpose of the present study is to investigate the effect of the vertical vibrations and the influence of temperature on the thermal EHL contacts. Design/methodology/approach The lubricant was assumed to be Newtonian fluid. The time-dependent numerical solutions were achieved instant afte

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Pastukhova, Lilia, Vladimir Alekhin, Sergey Gorodilov, and Antonina Sekacheva. "NUMERIC ANALYSIS OF VIBRATION IMPACT OF SUBWAY ON MULTI-STOREY BUILDING." Akustika 34 (November 1, 2019): 59–65. http://dx.doi.org/10.36336/akustika20193459.

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The authors carried out the numerical analysis of vibration impact of subway on the multistory residential building. Supposed building site is situated in Yekaterinburg and placed above the subway line tunnels in the middle of the track between the stations. The analysis is aimed to simulate the initiation of vibration during the period when the train passes, to assess the impact of availability of vibration-damping layer on this process, and also to obtain values of vibrational accelerations in order to predict vibration levels and volumes of sound in reference points in living spaces.

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Lapole, Thomas, and Chantal Pérot. "Hoffmann reflex is increased after 14 days of daily repeated Achilles tendon vibration for the soleus but not for the gastrocnemii muscles." Applied Physiology, Nutrition, and Metabolism 37, no. 1 (2012): 14–20. http://dx.doi.org/10.1139/h11-129.

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In a previous study, Achilles tendon vibrations were enough to improve the triceps surae (TS) activation capacities and also to slightly increase TS Hoffmann reflex (H-reflex) obtained by summing up soleus (Sol) and gastrocnemii (GM and GL) EMGs. The purpose of the present study was to analyze separately Sol and GM or GL reflexes to account for different effects of the vibrations on the reflex excitability of the slow soleus and of the gastrocnemii muscles. A control group (n = 13) and a vibration group (n = 16) were tested in pre-test and post-test conditions. The Achilles tendon vibration pr

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KILIKEVIČIUS, Artūras, Darius BAČINSKAS, Mindaugas JUREVIČIUS, et al. "FIELD TESTING AND DYNAMIC ANALYSIS OF OLD CONTINUOUS TRUSS STEEL BRIDGE." Baltic Journal of Road and Bridge Engineering 13, no. 1 (2018): 54–66. http://dx.doi.org/10.3846/bjrbe.2018.394.

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Paper presents dynamic field test and analysis results of a three span railway steel continuous truss bridge over river Neris in Jonava. Bridge was originally constructed in 1914. In the period of the World War II and afterwards the bridge was many time destroyed by German and Soviet armies. In 1948 the new railway bridge was constructed. Object of the present paper is to evaluate dynamic behaviour of the railway bridge after 67 years in service. Experimental dynamic analysis was divided into resonance-vibration, forced-vibration and free vibration studies. Resonance-vibrations of the bridge w

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Cvetanovic, Boban, Dragan Cvetković, Momir Praščević, Miljan Cvetković, and Milan Pavlović. "An analysis of the impact of agricultural tractor seat cushion materials to the level of exposure to vibration." Journal of Low Frequency Noise, Vibration and Active Control 36, no. 2 (2017): 116–23. http://dx.doi.org/10.1177/0263092317711983.

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During everyday operations with tractors, drivers are exposed to harmful effects of various factors. In addition to unfavourable temperature and humidity, dust and noise, one of the factors harmful to driver’s health is vibrations. They come from the tractor engine and from the roughness of the ground and are transferred to the cab and through the seat to the body of the driver. In case of high level magnitude vibrations and a long period of exposure to them, many health problems occur. The harmful effect of the vibrations is especially obvious in older models of tractors. High intensities of

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Chen, Wen-Li, Donglai Gao, Shujin Laima, and Hui Li. "A Field Investigation on Vortex-Induced Vibrations of Stay Cables in a Cable-Stayed Bridge." Applied Sciences 9, no. 21 (2019): 4556. http://dx.doi.org/10.3390/app9214556.

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A field study was conducted to identify the vortex-induced vibrations (VIVs) of stay cables in a cable-stayed bridge. A full-scale health-monitoring system was established to observe the wind effects of the selected cables. The vibration amplitudes in the twenty selected stay cables were first studied. The results indicate that only cable CAC20 has large amplitudes with a multimode and high-frequency vibration in the investigated period. The correlation between the wind and cable vibration was subsequently investigated. The large vibration amplitudes are primarily located in the mean speed sco

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Zhang, Hao, Ling Pan, and Xuqing Xie. "Molecular Dynamics Simulation on Behaviors of Water Nanodroplets Impinging on Moving Surfaces." Nanomaterials 12, no. 2 (2022): 247. http://dx.doi.org/10.3390/nano12020247.

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Droplets impinging on solid surfaces is a common phenomenon. However, the motion of surfaces remarkably influences the dynamical behaviors of droplets, and related research is scarce. Dynamical behaviors of water nanodroplets impinging on translation and vibrating solid copper surfaces were investigated via molecular dynamics (MD) simulation. The dynamical characteristics of water nanodroplets with various Weber numbers were studied at five translation velocities, four vibration amplitudes, and five vibration periods of the surface. The results show that when water nanodroplets impinge on tran

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Kashirina, Ekaterina K., Ivan A. Lobach, and Sergey I. Kablukov. "Vibration-Induced Sweeping Operation in Fiber Lasers." Photonics 11, no. 8 (2024): 731. http://dx.doi.org/10.3390/photonics11080731.

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A new vibration-based mechanism of optical frequency/wavelength sweeping in fiber lasers induced by optical path length modulation of a laser cavity section is proposed. The mechanism is implemented for an erbium-doped fiber ring laser with a saturable absorber. Without the vibrations, the laser generates a single longitudinal mode (SLM) radiation. We show experimentally for the first time that mechanical vibrations of the laser cavity section can lead to mode dynamics in both frequency and time domains. The possibility of obtaining various mode dynamics, such as vibration-induced sweeping in

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Zhao, Shi Quan, Bo Xue Liu, Yong Quan Wang, and Hua Ling Chen. "Vibration Reduction of Pipe Systems Using Phononic Crystals." Advanced Materials Research 694-697 (May 2013): 354–60. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.354.

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The vibration of pipe systems not only worsens their working environment, but also may result in the loosening of mechanical connections between pipelines, as well as the structural fatigue damages. This paper presents a new method for vibration control of pipe systems, by specially designing some pipe structures based on two vibration reduction mechanisms of phononic crystals, for the vibration frequency in the actual tests. Some numerical analyses are then performed about the effects of the parameters of vibrator, for instance, the ratio of material components, and the numbers of period. The

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Zhan, Yingzhao. "Performance evaluation of vibration-damping bucking bar in human-robot collaboration." Journal of Physics: Conference Series 2879, no. 1 (2024): 012055. http://dx.doi.org/10.1088/1742-6596/2879/1/012055.

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Abstract The riveting process in aircraft manufacturing generates large vibrations, and if it is exposed to vibration for a long period of time, riveting workers may suffer from Hand-Arm Vibration Syndrome causing irreversible damage to the robot. In this study, firstly, the vibration mechanical model of human-robot collaboration was established, and then the vibration characteristics of human-robot collaboration under squeezing force were deduced. Finally, an experiment was performed to evaluate the vibration damping performance of vibration-damping bucking bars by evaluating the mean peak sq

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Mohamed, Ahmed Nader, Khaled F. El Kashif, and Hamed M. Salem. "An Investigation of the Fundamental Period of Vibration for Moment Resisting Concrete Frames." Civil Engineering Journal 5, no. 12 (2019): 2626–42. http://dx.doi.org/10.28991/cej-2019-03091438.

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The determination of fundamental period of vibration for structures is essential to earthquake design. The current codes provide empirical formulas to estimate the approximated fundamental period and these formulas are dependent on building material, height of structure or number of stories. Such a formulation is excessively conservative and unable to account for other parameters such as: length to width ratios, vertical element size and floors area. This study investigated the fundamental periods of mid-rise reinforced concrete moment resisting frames. A total of 13 moment resisting frames we

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Rasani, Mohammad Rasidi, Mohammed Suleman Aldlemy, and Zambri Harun. "Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential." Journal of Mechanical Engineering and Sciences 11, no. 1 (2017): 2415–27. https://doi.org/10.15282/jmes.11.1.2017.2.022.

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Increasing environmental and energy concerns constitutes an encouraging development of future automobiles and autonomous vehicles that utilize cleaner and renewable energy. Although primarily an aerodynamic device, car rear spoilers experience various vibrations and limited attention has been given to exploiting these vibrations for generating alternative energy. This paper aims to investigate the potential of using the flow-induced vibration of rear spoilers on automobiles for energy harvesting. To that end, a fluid-structure interaction analysis of an inverted NACA 2408 spoiler behind an Ahm

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Liu, Hailong, Hengyi Lv, Chengshan Han, and Yuchen Zhao. "Vibration Detection and Degraded Image Restoration of Space Camera Based on Correlation Imaging of Rolling-Shutter CMOS." Sensors 23, no. 13 (2023): 5953. http://dx.doi.org/10.3390/s23135953.

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To mitigate the influence of satellite platform vibrations on space camera imaging quality, a novel approach is proposed to detect vibration parameters based on correlation imaging of rolling-shutter CMOS. In the meantime, a restoration method to address the image degradation of rolling-shutter CMOS caused by such vibrations is proposed. The vibration parameter detection method utilizes the time-sharing and row-by-row imaging principle of rolling-shutter CMOS to obtain relative offset by comparing two frames of correlation images from continuous imaging. Then, the space camera’s vibration para

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Aydın, Şenay, Markus Kofler, Yeliz Bakuy, Ayşegül Gündüz, and Meral E. Kızıltan. "Effects of vibration on cutaneous silent period." Experimental Brain Research 237, no. 4 (2019): 911–18. http://dx.doi.org/10.1007/s00221-018-05463-1.

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Rusanova, Dina V., Natalya V. Slivnitsyna, and Oleg L. Lakhman. "Alterations of the nervous system in patients with vibration disease." Hygiene and sanitation 102, no. 9 (2023): 934–40. http://dx.doi.org/10.47470/0016-9900-2023-102-9-934-940.

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Introduction. An important aspect of prevention is the dynamic monitoring of workers exposed to the vibration in the workplace, which not only forms the basis for the diagnosis of occupational intoxication, but also ensures timely resolution of issues of examination of working capacity. Materials and methods. Twenty one male patient with an established diagnosis of vibration disease (VD) associated with exposure to local vibration. A dynamic survey was conducted, 3 observation periods were studied. Results. Over the 3rd period of the examination, the latency of N10 and N30 increase

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Dapeng, Zhu, Qin Liangkai, and Lin Yundian. "Analytical Study on Dynamic Response of Deep Foundation Pit Support Structure under the Action of Subway Train Vibration Load: A Case Study of Deep Foundation Pit of the New Museum Near Metro Line 2 in Chengdu, China." Shock and Vibration 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/535196.

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Presently, foundation pit support structures are generally regarded as the temporary structures and the impact of vibration loads is often overlooked. As opposed to static and seismic loads, the vibration loads of subway trains are a type of cyclic load with a relatively long duration of action and a definite cycle; it is of great importance for the design of foundation pit support structures to correctly evaluate the impact of subway train vibrations on deep foundation pit and support works. In this paper, a dynamic three-dimensional numerical model is built that considers the vibration load

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Isobe, Hiromi, Masatoshi Okuda, Keisuke Hara, and Jun Ishimatsu. "Effect of Vibration Direction of Ultrasonic Vibrating Cutting Edge on Internal Stress Fluctuation of Workpiece." International Journal of Automation Technology 15, no. 4 (2021): 457–65. http://dx.doi.org/10.20965/ijat.2021.p0457.

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The aim of this study is to investigate the dynamic phenomenon of ultrasonic vibration-assisted cutting by utilizing a stress distribution visualization system. The vibrating cutting-edge is considered to be a cause of dynamic changes in the cutting force at ultrasonic frequencies. However, many researchers have explained the effect of ultrasonic vibration-assisted cutting by evaluating the time-averaged cutting force, because existing dynamometers are unable to measure the dynamically changing cutting force at ultrasonic frequencies. There are some reports that the vibration direction of cutt

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Iwakura, Izumi, Atsushi Yabushita, Jun Liu, Kotaro Okamura, Satoko Kezuka, and Takayoshi Kobayashi. "A new reaction mechanism of Claisen rearrangement induced by few-optical-cycle pulses: Demonstration of nonthermal chemistry by femtosecond vibrational spectroscopy." Pure and Applied Chemistry 85, no. 10 (2013): 1991–2004. http://dx.doi.org/10.1351/pac-con-12-12-01.

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Time-resolved vibration spectroscopy is the only known way to directly observe reaction processes. In this work, we measure time-resolved vibration spectra of the Claisen rearrangement triggered and observed by few-optical-cycle pulses. Changes in molecular structure during the reaction, including its transition states (TSs), are elucidated by observing the transient changes of molecular vibration wavenumbers. We pump samples with visible ultrashort pulses of shorter duration than the molecular vibration period, and with photon energies much lower than the minimum excitation energy of the samp

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Nguyen, Duc Cong, Marek Salamak, Andrzej Katunin, and Grzegorz Poprawa. "Structural Health Monitoring for Dębica Railway Steel Arch Bridge in Poland." Civil and Environmental Engineering Reports 34, no. 2 (2024): 216–23. http://dx.doi.org/10.59440/ceer/190061.

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The study presents the vibration-based SHM system for the Dębica railway bridge located in Poland. The railway bridge owner was concerned about the excessive and self-excited vibrations of the hangers, the vibration measurement of 8 hangers per span in a total of two spans being monitored. The dynamic responses in both the transverse and longitudinal directions for each hanger under different load events over a nine-month period were recorded and introduced in this paper. The tension force and stress on each hanger are estimated through the natural frequency of the experimental vibration analy

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Wu, Chu Qun, Fan Wang, and Shao Yong Wang. "Dynamic Analysis of Large Steel Structure Truss System." Applied Mechanics and Materials 101-102 (September 2011): 387–91. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.387.

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The deformation of the large steel structure truss system, which was subjected to constant loads, variable loads and wind loads, was calculated by using the 3D3S steel structure analysis program. The periods and the vibration mode from the first to the ninth order of the structure were obtained by the earthquake vibration mode period analysis. The dynamic computation of the structure showed that the period difference of the vibration modes is small. The frequencies and the modes of vibration from the first to the ninth order of the same structure mode were calculated by using the ANSYS finite

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Gerasimov, Mihail D., Nickolai S. Lubimyi, Andrey A. Polshin, Boris S. Chetverikov, and Anastasia Chetverikova. "Methodology for Designing Vibration Devices with Asymmetric Oscillations and a Given Value of the Asymmetry of the Driving Force." Vibration 8, no. 1 (2025): 3. https://doi.org/10.3390/vibration8010003.

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In mechanical engineering, the building industry, and many other branches of industry, vibration machines are widely used, in which circular and directed oscillations predominate in the form of movement of the working equipment. This article examines methods for generating asymmetric oscillations, which are estimated by a numerical parameter, namely by the coefficient of asymmetry of the magnitude of the driving force when changing the direction of action in a directed motion within each period of oscillations. It is shown that for generating asymmetric mechanical vibrations, vibration devices

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Han, Jie, Xianglin Gong, Chencheng Lian, et al. "An Analysis of Nonlinear Axisymmetric Structural Vibrations of Circular Plates with the Extended Rayleigh–Ritz Method." Mathematics 13, no. 8 (2025): 1356. https://doi.org/10.3390/math13081356.

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The nonlinear deformation and vibrations of elastic plates represent a fundamental problem in structural vibration analysis, frequently encountered in engineering applications and classical mathematical studies. In the field of studying the nonlinear phenomena of elastic plates, numerous methods and techniques have emerged to obtain approximate and exact solutions for nonlinear differential equations. A particularly powerful and flexible method, known as the extended Rayleigh–Ritz method (ERRM), has been proposed. In this approach, the temporal variable is introduced as an additional dimension

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Zhang, Xiaodong, Shuguang Liu, Changwang Yan, Xiaoxiao Wang, and Huiwen Wang. "Effects of Vehicle-Induced Vibrations on the Tensile Performance of Early-Age PVA-ECC." Materials 12, no. 17 (2019): 2652. http://dx.doi.org/10.3390/ma12172652.

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Polyvinyl alcohol-engineering cementitious composites (PVA-ECCs) have been widely applied in bridge deck repairing or widening, and a common practice is that a portion of the bridge is left open to traffic while the closed portion is constructed, which exposes the early-age PVA-ECC to vehicle-induced vibrations. However, whether vehicle-induced vibrations affect the performance of early-age PVA-ECC remains unknown. The purpose of this study was to conduct laboratory test programs to investigate to what extent vehicle-induced vibrations soon after installation affects the tensile performance of

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Kravchuk, V. A. "Dynamic parameters of the carrying capacity of steel beams prestressed by stretching the thin wall at rigid fixing on supports." Вестник гражданских инженеров 18, no. 6 (2021): 72–78. http://dx.doi.org/10.23968/1999-5571-2021-18-6-72-78.

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On the basis of the well known method of comparison of the potential and kinetic energy of the oscillating rod, there was determined the angular frequency, the vibration period, and the number of vibrations per minute of the beam with rigid supports. There was carried out a comparative analysis of the dynamic parameters of conventional beams prestressed with hinged supports with rigid coupling at the nodes. The dynamic characteristics of the beams under the impact of vibration load were studied.

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Al-Souqi, Khaled, Khaled Kadri, and Samir Emam. "A Review on Vibration Control Using Piezoelectric Shunt Circuits." Applied Sciences 15, no. 11 (2025): 6035. https://doi.org/10.3390/app15116035.

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Vibration control is a critical aspect of engineering, particularly in structures and mechanical systems where excessive oscillations can lead to fatigue, noise, or failure. Vibration suppression is essential in aerospace, automotive, civil, and industrial applications to enhance performance and longevity of systems. Piezoelectric shunt circuits (PSCs) offer a passive or semi-active approach to damping vibrations by leveraging the electromechanical properties of piezoelectric materials. Traditional passive damping methods, such as viscoelastic materials, are effective but lack adaptability. Ac

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Podchezertsev, V. P., and S. V. Topilskaya. "Choosing Damping Parameters for the Inertial Orientation System." Herald of the Bauman Moscow State Technical University. Series Instrument Engineering, no. 3 (136) (September 2021): 113–28. http://dx.doi.org/10.18698/0236-3933-2021-3-113-128.

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The article discusses criteria for selecting the vibration protection for the spacecraft inertial orientation system. The considered vibration protection system allows providing acceptable amplitude acceleration for the gyroscopic device sensitive elements under vibration impact on the device body during the spacecraft launching and high angular stability of the position of the sensitive elements relative to the inertial coordinate system during a long period of operation (15 years) in orbit. The proposed vibration protection system consists of shock absorbers (springs) with stable high elasti

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Oktrison, Oktrison, Erwinsyah Sipahutar, Firdaus Jamsan, Rudi Arif Candra, and Dirja Nur Ilham. "Characteristics of Wireless Vibration Sensors for South Aceh Polytechnic Building." Brilliance: Research of Artificial Intelligence 4, no. 2 (2024): 470–77. https://doi.org/10.47709/brilliance.v4i2.4605.

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Vibration is a back-and-forth movement in a certain time interval that produces waves in a medium. Vibration can occur on a small or large scale. So on a small scale, a vibration sensor is needed to detect certain phenomena such as vibrations of engine capacity and detected pressure. On a large scale, vibration sensors can be used to detect earthquakes and other major phenomena and design a real-time vibration detection system for long distances, so vibration sensor components, controllers, and radio systems are needed. Therefore, researchers made a simple vibration detector using the experime

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