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Journal articles on the topic 'Frequency dependent damping'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Viet, La Duc. "On the trade-off performance curve of vibration isolation controlled by passive or adaptive dampings." Vietnam Journal of Mechanics 45, no. 2 (2023): 131–44. http://dx.doi.org/10.15625/0866-7136/18148.

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This paper addresses an on-off adaptive damping isolation, in which the damping can be frequency dependent. The comparison with the passive isolation is illustrated by the trade off performance curve, which is shown the relation between the displacement and force transmissibility. The adaptive control is based on on-off dampings and a switching frequency. The analytical optimization of the adaptive damping law can be obtained. The optimized adaptive damping control showed a remarkable improvement comparing with the passive one. At last, a self-made magnetorheological fluid is introduced to sho

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2

Zhang, Zhong Ming, Jin Cheng Wang, Chun Jie Xu, Wei Ming Li, and Gang Wang. "Study on Damping Capacities of Nodular Cast Iron Dense Bar Produced by Horizontal Continuous Casting." Advanced Materials Research 399-401 (November 2011): 250–53. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.250.

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Damping capacities of the annealed nodular cast iron dense bar produced by horizontal continuous casting were measured by Dynamic Mechanical Analyzer. The relation of damping capacities with vibration amplitude, frequency and temperature was analyzed to investigate the damping mechanism of the alloy. The results show that the damping capacities increase with increasing temperature and frequency. The internal friction spectra exhibits two internal friction peaks at about 40°C and 150°C and caused by Snoek relaxation and Snoek-Köster relaxation, respectively. The maximum damping capacity can be

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3

Fenander, Å. "Frequency dependent stiffness and damping of railpads." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 211, no. 1 (1997): 51–62. http://dx.doi.org/10.1243/0954409971530897.

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The vertical stiffness and damping of studded rubber railpads have been measured, both in a complete track and in a test rig, as functions of frequency under different static preloads. Also, for more compact polymer-based railpads, track measurements were performed. The stiffness of the studded railpads was found to increase strongly with preload, but only weakly with frequency. The loss factor of the studded railpads was found to be nearly independent of preload and to increase only slightly with frequency. A fractional derivative model of the dynamic behaviour of the railpad is proposed.

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4

Hu, Xiao Shi, Kun Wu, and Ming Yi Zheng. "Low Frequency Damping Behaviors of Magnesium Alloys." Advanced Materials Research 15-17 (February 2006): 479–84. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.479.

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The effect of different alloying elements including Ni, Si and Al and various mass contents of these elements on the low frequency damping behaviors of magnesium alloys were investigated. The measurements of strain dependent and temperature dependent damping capacities of these magnesium alloys were carried out using dynamic mechanical analyzer (DMA), and the very different damping behaviors of these magnesium alloys were found. The hypoeutectic magnesium alloys with low solubility alloying elements such as Si and Ni shown extremely high damping capacities. But the Mg-Al alloys exhibited very

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5

Tian, Yuan, Yifan Fei, Yuli Huang, and Xinzheng Lu. "A universal rate-dependent damping model for arbitrary damping-frequency distribution." Engineering Structures 255 (March 2022): 113894. http://dx.doi.org/10.1016/j.engstruct.2022.113894.

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6

Wan, Di Qing, Bo Lin He, Jin Cheng Wang, and Gen Cang Yang. "Strain Amplitude Dependence of Damping Capacity in High Damping Mg-Based Alloys Continuously Extending to Microplastic Strain." Advanced Materials Research 97-101 (March 2010): 937–40. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.937.

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An investigation on low frequency strain amplitude dependence damping characteristic of as-cast high damping Mg-based alloys continuously extending to microplastic strain was carried out. Two-stage damping behavior via strain amplitude was particularly reported. The first is the strain amplitude strongly dependent part due to breakaway loss and the second is the strain amplitude weakly dependent part due to microplastic deformation loss, which is also frequency dependent. The damping mechanism is discussed in detail.

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7

Chang, Der-Wen, J. M. Roesset, and Chan-Hua Wen. "A time-domain viscous damping model based on frequency-dependent damping ratios." Soil Dynamics and Earthquake Engineering 19, no. 8 (2000): 551–58. http://dx.doi.org/10.1016/s0267-7261(00)00072-5.

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8

Hayama, Shinji. "Frequency-Dependent Damping Forces in an Oil Damper." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 22, no. 8 (1987): 529–32. http://dx.doi.org/10.5988/jime1966.22.529.

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9

Esquivel-Sirvent, R. "Frequency-dependent Drude damping in Casimir force calculations." Journal of Physics: Conference Series 161 (April 1, 2009): 012012. http://dx.doi.org/10.1088/1742-6596/161/1/012012.

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10

Sharma, Mrigank, and Edmond Cretu. "Frequency-dependent noise analysis and damping in MEMS." Microsystem Technologies 15, no. 8 (2009): 1129–39. http://dx.doi.org/10.1007/s00542-008-0767-0.

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11

Maddalena, Francesco, and Gianluca Orlando. "Frequency-dependent damping in the linear wave equation." Networks and Heterogeneous Media 20, no. 2 (2025): 406–27. https://doi.org/10.3934/nhm.2025019.

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12

Pazooki, Alireza, Avesta Goodarzi, Amir Khajepour, Amir Soltani, and Claude Porlier. "A novel approach for the design and analysis of nonlinear dampers for automotive suspensions." Journal of Vibration and Control 24, no. 14 (2017): 3132–47. http://dx.doi.org/10.1177/1077546317701011.

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This paper proposes an analytical technique for frequency analysis and the design of nonlinear dampers to further improve ride dynamics performance of vehicle suspensions over a wide range of excitation frequencies. Using the energy balance method (EBM), the proposed methodology estimates the equivalent linear damping coefficient of any nonlinear passive damper whose force is a general function of the damper’s relative displacement and relative velocity. Knowing the equivalent linear damping coefficient makes it possible to perform a frequency analysis of the suspension ride performance with a

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13

Zhu, Xiaosong, Ningjuan Dong, Lijuan Jiao, and Hui Zheng. "Uncertain sound transmission loss of composite laminated plates with embedded viscoelastic damping layer." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 5 (2023): 3727–36. http://dx.doi.org/10.3397/in_2023_0532.

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Laminated composite structures have been widely applied in the engineering field due to their excellent capacities such as high specific stiffness, high specific strengths and tailorable anisotropic elastic properties. Embedding the viscoelastic damping layers into the laminated composites to construct co-cured composite damping structures provides an effective way to improve the sound insulation capability. In this paper, a semi-analytical model is proposed to investigate the sound transmission loss (STL) of composite laminated structure with embedded viscoelastic damping layer considering it

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14

Riehemann, Werner, and Zuzanka Trojanová. "Fatigue Behavior of Magnesium Alloy AJ91 Studied by Amplitude Dependent Damping Measurements." Solid State Phenomena 184 (January 2012): 185–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.184.185.

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The amplitude dependent damping of two bending beam samples of magnesium alloy AJ91 (9 wt.% Al, 1 wt.% Sr) was measured at room temperature in as cast condition, after quenching from high temperatures into water of room temperature and after various bending cycles to fatigue. Some measurements were performed successively with about 33 Hz and 100 Hz resonant frequency. The measurements show typical dislocation damping in as cast condition, after heat treatment at temperatures lower than 420°C, and cycle numbers lower then 50.000. For higher quenching temperatures the damping increases over the

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15

Lin, R. M., and S.-F. Ling. "Identification of Damping Characteristics of Viscoelastically Damped Structures Using Vibration Test Results." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 210, no. 2 (1996): 111–21. http://dx.doi.org/10.1243/pime_proc_1996_210_178_02.

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Damping plays an important role in structural stability and vibration control and so frequently special efforts are taken to increase structural damping, of which the most effective measure to date is the viscoelastic damping treatment. However, damping properties, especially those of viscoelastic damping, are the most difficult to model analytically but can only be revealed by vibration test. This paper examines the feasibility of identifying damping characteristics of viscoelastically damped structures whose damping and stiffness characteristics are frequency dependent by correlating finite

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16

Joseph Yang, Yao-Joe, Chih-Ming Chien, Mattan Kamon, Vladimir L. Rabinovich, and John R. Gilbert. "Extraction of Frequency Dependent Macromodels for Mems Squeezed-Film Damping Effects." Journal of Mechanics 21, no. 4 (2005): 227–34. http://dx.doi.org/10.1017/s1727719100000666.

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AbstractIn this paper, an efficient macromodel extraction technique for dynamical MEMS gas damping effects is presented. The technique applies an Arnoldi-based model-order-reduction algorithm to generate low-order macromodels from a FEM approximation of the governing equation of the squeeze-film fluidic damping effect, the Reynolds equation. We demonstrate that this approach is more than 100 times efficient than previous approaches, which solve the Reynolds equation using transient finite-element/finite-difference methods. The generated gas-damping macromodels can be easily inserted into syste

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17

Ghosh, M. K., and N. S. Viswanath. "Recess Volume Fluid Compressibility Effect on the Dynamic Characteristics of Multirecess Hydrostatic Journal Bearings With Journal Rotation." Journal of Tribology 109, no. 3 (1987): 417–26. http://dx.doi.org/10.1115/1.3261462.

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An analysis using finite difference method and small amplitude perturbation technique has been presented to evaluate the frequency dependent stiffness and damping coefficients of multirecess hydrostatic journal bearings including the effect of shaft rotation that results in hybrid operation. Recess volume fluid compressibility effect that results in the frequency dependent dynamic coefficients have been taken into account. Results for direct and cross stiffness coefficients, direct and cross damping coefficients are presented for a capillary compensated bearing with deep recesses. Frequency ef

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18

Prasad, S. Krishna, D. Banerjee, and T. Van Doorsselaere. "FREQUENCY-DEPENDENT DAMPING IN PROPAGATING SLOW MAGNETO-ACOUSTIC WAVES." Astrophysical Journal 789, no. 2 (2014): 118. http://dx.doi.org/10.1088/0004-637x/789/2/118.

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19

Verbridge, Scott S., Rob Ilic, H. G. Craighead, and Jeevak M. Parpia. "Size and frequency dependent gas damping of nanomechanical resonators." Applied Physics Letters 93, no. 1 (2008): 013101. http://dx.doi.org/10.1063/1.2952762.

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20

Zhou, Yong, Anna Liu, Yongzheng Xu, Yunli Guo, Xiaosu Yi, and Yuxi Jia. "Frequency-dependent orthotropic damping properties of Nomex honeycomb composites." Thin-Walled Structures 160 (March 2021): 107372. http://dx.doi.org/10.1016/j.tws.2020.107372.

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21

Selvam, R. Panneer, and S. K. Bhattacharyya. "System Identification of a Coupled Two DOF Moored Floating Body in Random Ocean Waves." Journal of Offshore Mechanics and Arctic Engineering 128, no. 3 (2005): 191–202. http://dx.doi.org/10.1115/1.2199557.

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Dynamics of a large moored floating body in ocean waves involves frequency dependent added mass and radiation damping as well as the linear and nonlinear mooring line characteristics. Usually, the added mass and radiation damping matrices can be estimated either by potential theory-based calculations or by experiments. The nonlinear mooring line properties are usually quantified by experimental methods. In this paper, we attempt to use a nonlinear system identification approach, specifically the reverse multiple input-single output (R-MISO) method, to coupled surge-pitch response (two-degrees-

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22

Ware, A. G. "An Assessment of Frequency-Dependent Damping Using the Nuclear Piping System Damping Data Base." Journal of Pressure Vessel Technology 107, no. 4 (1985): 361–65. http://dx.doi.org/10.1115/1.3264466.

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The existing nuclear piping damping data base is examined to assess the relation between frequency and damping in the seismic range (0 to 33 Hz). A conclusion is reached that the published data supports such a correlation for individual systems, and that this relation offers suitable advantages for use in establishing allowable damping values for seismic analyses. The data base for higher frequency systems subjected to flow-induced loads is presently very meager, and thus a corresponding assessment cannot be made.

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23

Kun, János, Daniel Feszty, and Dániel Feszty. "Simulations of poroelastic materials in a complex acoustic system using frequency-dependent parameters in the mid-frequency range." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 2 (2021): 4880–88. http://dx.doi.org/10.3397/in-2021-2869.

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Efficiency requirements prompt manufacturers to develop ever lighter acoustic packages in vehicles. Poroelastic materials are essential to achieve the desired interior noise level targets and thus the simulation of their effects is of utmost importance in NVH analyses. However, it is challenging to achieve good validation between finite element method (FEM) based simulation results and measurements in the mid-frequency range (400-1000 Hz). One possible reason could be the lack of using frequency-dependent Biot-paremeters describing the poroelastic materials (PEM) characteristics of trims. The

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24

K, Joseph Shibu, K. Shankar, Ch Kanna Babu, and Girish K. Degaonkar. "Multi-objective optimisation of a small aircraft turbine engine rotor system with self-updating Rayleigh damping model and frequency-dependent bearing-pedestal model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 16 (2019): 5710–23. http://dx.doi.org/10.1177/0954406219851531.

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A self-updating Rayleigh damping model and frequency-dependent bearing-pedestal model for multi-objective optimisation is presented through this paper and is applied for a small turbine engine rotor system for aircraft application. This engine is used as an auxiliary power unit on aircraft. The Rayleigh damping model and frequency-dependent bearing pedestal model are verified by carrying out experiments on this auxiliary power unit rotor system. The novel self-updating feature calculates the Rayleigh damping coefficients and frequency-dependent bearing-pedestal stiffness for each chromosome an

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25

Bhattacharyya, S. K., and R. Panneer Selvam. "Parameter Identification of a Large Floating Body in Random Ocean Waves by Reverse MISO Method." Journal of Offshore Mechanics and Arctic Engineering 125, no. 2 (2003): 81–86. http://dx.doi.org/10.1115/1.1493201.

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Dynamics of a large moored floating body in ocean waves involves frequency dependent added mass and radiation damping as well as the linear and nonlinear mooring line characteristics. Usually, the added mass and radiation damping matrices can be estimated either by potential theory-based calculations or by experiments. The nonlinear mooring line properties are usually quantified by experimental methods. In this paper, we attempt to use a nonlinear system identification approach, specifically the Reverse Multiple Inputs-Single Output (R-MISO) method, to a single-degree-of-freedom system with li

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26

Hu, Yanqing, Hernán A. Makse, John J. Valenza, and David L. Johnson. "Frequency-dependent attenuation and elasticity in unconsolidated earth materials: Effect of damping." GEOPHYSICS 79, no. 6 (2014): L41—L49. http://dx.doi.org/10.1190/geo2013-0459.1.

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We used the discrete element method (DEM) to understand the underlying attenuation mechanism in granular media, with special applicability to the measurements of the so-called effective mass developed earlier. We considered that the particles interacted via Hertz-Mindlin elastic contact forces and that the damping was describable as a force proportional to the velocity difference of contacting grains. We determined the behavior of the complex-valued normal-mode frequencies using (1) DEM, (2) direct diagonalization of the relevant matrix, and (3) a numerical search for the zeros of the relevant

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27

Hapipi, Norhiwani Mohd, Saiful Amri Mazlan, Muntaz Hana Ahmad Khairi, and Norzilawati Mohamad. "The Damping Properties of Plate-Like Magnetorheological Elastomer." Key Engineering Materials 772 (July 2018): 56–60. http://dx.doi.org/10.4028/www.scientific.net/kem.772.56.

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This paper aims to investigate the damping properties of plate-like carbonyl iron particle (CIP) magnetorheological elastomer (MRE). The damping properties of MRE is mainly dependent on the strength of magnetic field. Anisotropic MRE was fabricated under various magnetic fields strength (70, 210, 345, and 482 mT) and its damping property prior to frequency-dependent was measured using a rheometer. Firstly, the plate-like CIP was first synthesized from spherical CIP using a ball-milling method. The microstructure of plate-like CIP was observed using low vacuum scanning electron microscope. Subs

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28

Haklander, A. J., P. C. Siegmund, and H. M. Kelder. "Analysis of the frequency-dependent response to wave forcing in the extratropics." Atmospheric Chemistry and Physics 6, no. 12 (2006): 4477–81. http://dx.doi.org/10.5194/acp-6-4477-2006.

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Abstract. A quasigeostrophic model for the frequency-dependent response of the zonal-mean flow to planetary-wave forcing at Northern Hemisphere (NH) midlatitudes is applied to 4-D-Var ECMWF analysis data for six extended winter seasons. The theoretical response is a non-linear function of the frequency of the forcing, the thermal damping time α−1, and a scaling parameter µ which includes the aspect ratio of the meridional to the vertical length scale of the response. Regression of the calculated response from the analyses onto the theoretical response yields height-dependent estimates for both

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29

Dresslerová, Zuzana, Peter Palček, and Mária Chalupová. "Effect of Structure and Cyclic Loading on the Internal Damping Capacity." Materials Science Forum 891 (March 2017): 377–82. http://dx.doi.org/10.4028/www.scientific.net/msf.891.377.

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The damping capacity, which was characterized by dissipating of mechanical energy, was examined in magnesium alloys (AZ31, AZ61 and AZ91). Internal damping is usually divided into three regions, namely the regions in which the internal damping is strain independent, weakly dependent and strongly dependent. The article is focused on the critical amplitudes of deformation which separate the strain independent, weakly dependent and strongly dependent regions. In experimental measurements resonance method was used, which is based on continuous excitation of oscillations of the specimen and the ent

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30

Huang, Wenjun, Guorui Yu, Wentao Xu, and Ruchuan Zhou. "A Stochastic Dynamics Method for Time-Varying Damping Depending on Temperature/Frequency for Several Alloy Materials." Materials 17, no. 5 (2024): 1207. http://dx.doi.org/10.3390/ma17051207.

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In the field of aerospace and advanced equipment manufacturing, accurate response analysis has been paid more attention, requiring a more comprehensive study of the variation of mechanical parameters with the service environment. The damping variation characteristics of 304 aluminum alloy, Sa564 high-strength alloy, GW63K magnesium alloy, and Q235 steel were investigated in this paper, which plays a significant role in the dynamic responses of structures. Variable damping ratios were revealed by the damping tests based on a dynamic mechanical analysis (DMA). The numerical method of temperature

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31

Zoghaib, L., and P. O. Mattei. "Time and frequency response of structures with frequency dependent, non-proportional linear damping." Journal of Sound and Vibration 333, no. 3 (2014): 887–900. http://dx.doi.org/10.1016/j.jsv.2013.09.044.

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32

KURITA, Tetsushi, Hiroshi SATO, and Tomomi ADACHI. "STATISTICAL FEATURES ON THE FREQUENCY DEPENDENT DAMPING OF SUBSURFACE GROUND." Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 71, no. 4 (2015): I_13—I_20. http://dx.doi.org/10.2208/jscejseee.71.i_13.

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33

김주용. "Frequency Dependent Damping for a Nonlinear Vehicle Active Suspension System." Journal of the Korean Society of Mechanical Technology 13, no. 2 (2011): 45–54. http://dx.doi.org/10.17958/ksmt.13.2.201106.45.

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34

Wei, Wen, Zhijun Dai, Wenhong Pang, Jie Wang, Yining Chen, and Shu Gao. "Frequency-dependent wave damping by tidal wetlands under storm conditions." Journal of Hydrology 613 (October 2022): 128415. http://dx.doi.org/10.1016/j.jhydrol.2022.128415.

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35

Wilson, Gary R. "A wavelet method for estimating frequency‐dependent damping in structures." Journal of the Acoustical Society of America 97, no. 5 (1995): 3288. http://dx.doi.org/10.1121/1.411491.

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36

Everstine, Gordon C., and Raymond S. ‐C Cheng. "Structural acoustic analysis of structures with frequency‐dependent damping treatments." Journal of the Acoustical Society of America 95, no. 5 (1994): 2946. http://dx.doi.org/10.1121/1.409108.

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37

Li, Li, Yujin Hu, Weiming Deng, Lei Lü, and Zhe Ding. "Dynamics of structural systems with various frequency-dependent damping models." Frontiers of Mechanical Engineering 10, no. 1 (2015): 48–63. http://dx.doi.org/10.1007/s11465-015-0330-5.

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38

Aydemir, Eren, and Polat Sendur. "Simplified transfer function approach for modeling frequency dependency of damping characteristics of rubber bushings." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 10 (2018): 2518–31. http://dx.doi.org/10.1177/0954407018799773.

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Physical systems that consist of parts and vibration isolators such as rubber bushings are usually modeled in multibody simulations, where parts are represented as rigid bodies with their mass and inertia properties and rubber bushings are modeled with Voigt models to represent their stiffness and damping characteristics. Employment of Voigt models in multi-degree-of-freedom systems, however, may result in lower accuracy due to limitations in representing frequency-dependent dynamic characteristics of vibration isolators. To overcome this challenge, in this study, we develop and present a simp

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39

Zhan, Tianyi, Jiali Jiang, Jianxiong Lu, Yaoli Zhang, and Jianmin Chang. "Frequency-dependent viscoelastic properties of Chinese fir (Cunninghamia lanceolata) under hygrothermal conditions. Part 1: moisture adsorption." Holzforschung 73, no. 8 (2019): 727–36. http://dx.doi.org/10.1515/hf-2018-0208.

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AbstractTo elucidate the frequency-dependent viscoelasticity of wood under a moisture non-equilibrium state, changes in stiffness and damping as a function of frequency were investigated during the moisture adsorption process. The moisture adsorption processes were carried out at six temperatures (30–80°C) and three relative humidity levels (30, 60 and 90% RH). During the moisture adsorption process, the wood stiffness decreased, and damping increased with the increment of moisture content (MC). Regardless of the moisture adsorption time, the wood stiffness increased, and damping decreased wit

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40

Cao, Y. Q., Zhao Xiang Deng, J. Li, and H. J. Liu. "Multi-Parameter Optimization Algorithm of Frequency-Dependent Model for Viscoelastic Damping Material." Advanced Materials Research 129-131 (August 2010): 416–20. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.416.

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In order to obtain the parameters of viscoelastic damping material model, namely GHM, which account for frequency dependence and allow time-domain analysis of viscoelastic composite structure, a new optimization algorithm which is composed of particle swarm optimization(PSO) and sequential quadratic programming (SQP) algorithm is presented . The results are compared with those of standard rheological model and fractional derivative model as well as the experiment results. The results show that the hybrid algorithm can obtain the better optimum solution for the model and have a fast convergence

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41

Lesieutre, George A. "A Bilinear Variational Principle Governing Longitudinal Vibration of Rods With Frequency-Dependent Material Damping." Journal of Applied Mechanics 60, no. 1 (1993): 210–11. http://dx.doi.org/10.1115/1.2900751.

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The equations governing the longitudinal vibration of rods with frequency-dependent material damping are developed as the Euler equations of a bilinear variational principle. Frequency-dependent material damping and modulus are accommodated through the introduction of an augmenting thermodynamic field that interacts with the mechanical displacement field. These two primary dependent fields are supplemented with two corresponding adjoint fields for the purpose of addressing nonconservative system behavior. The variational function is nearly symmetric in the primary and adjoint variables, a form

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42

Al-Naseri, Haidar, and Gert Brodin. "Linear pair-creation damping of high-frequency plasma oscillation." Physics of Plasmas 29, no. 4 (2022): 042106. http://dx.doi.org/10.1063/5.0087085.

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We have studied the linear dispersion relation for Langmuir waves in plasmas of very high density, based on the Dirac–Heisenberg–Wigner formalism. The vacuum contribution to the physical observables leads to ultraviolet divergences, which are removed by a charge renormalization. The remaining vacuum contribution is small and is in agreement with previously derived expressions for the time-dependent vacuum polarization. The main new feature of the theory is a damping mechanism similar to Landau damping, but where the plasmon energy gives rise to creation of electron–positron pairs. The dependen

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43

Wan, Di Qing, and Ya Juan Liu. "Low Frequency Mechanical Spectroscopy of High Damping Mg-3wt.%Ni Alloy." Advanced Materials Research 146-147 (October 2010): 1761–64. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1761.

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The Dynamic Mechanical Analysis (DMA) was applied to investigate the low frequency mechanical spectroscopy response of as-cast high damping Mg-3wt.%Ni hypoeutectic alloys. There are two peaks appearing on the temperature dependent damping spectrum (-100 - 420 °C). The broad peak P1 is overlapped by some small peaks due to the thermally activated dislocation movement, while the P2 peak is a solute grain boundary relaxation peak.

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44

Li, Deng Hua, Shu Hui Yang, Jing Min Gao, and Yong Cheng Ma. "Magnitude Versus Frequency Performance of Vibration Acceleration Sensor Based on Cymbal Transducer." Key Engineering Materials 368-372 (February 2008): 226–29. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.226.

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The magnitude versus frequency performance for a vibration acceleration sensor based on metal-ceramic piezocomposite transducer (cymbal) was studied in this paper. The results showed that the voltage sensitivity of this new sensor is as a function of not only the effective piezoelectric coefficient, d33 e, elastic coefficient, ky, and the resonance frequency, f0, of the cymbal transducer, but also the relative damping coefficient, ξ, of this new sensor. The relative damping coefficient, ξ, is also as a function of the capacitance, C0, of the cymbal transducer and a function of the mass, m, of

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45

Coronado, Alberto, Marcelo A. Trindade, and Rubens Sampaio. "Frequency-Dependent Viscoelastic Models for Passive Vibration Isolation Systems." Shock and Vibration 9, no. 4-5 (2002): 253–64. http://dx.doi.org/10.1155/2002/862159.

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Even though there is a growing interest in active vibration isolation systems, passive approaches are still the best choice in many cases because they are inherently the simplest and of lowest cost. Moreover, better comprehension of the dynamics and specially of the damping behavior in passive systems is required for successful implementation of active schemes. In the vast literature of passive isolation systems, there are not many works that consider damping models more elaborated than the widely used complex modulus. In this work a passive isolation system composed of a base and two isolator

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Li, Longbiao. "Modeling Temperature-Dependent Vibration Damping in C/SiC Fiber-Reinforced Ceramic-Matrix Composites." Materials 13, no. 7 (2020): 1633. http://dx.doi.org/10.3390/ma13071633.

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In this paper, the temperature-dependent vibration damping in C/SiC fiber-reinforced ceramic-matrix composites (CMCs) with different fiber preforms under different vibration frequencies is investigated. A micromechanical temperature-dependent vibration damping model is developed to establish the relationship between composite damping, material properties, internal damage mechanisms, and temperature. The effects of fiber volume, matrix crack spacing, and interface properties on temperature-dependent composite vibration damping of CMCs and interface damage are analyzed. The experimental temperat

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Li, Qianqian, Roberto Corradi, Egidio Di Gialleonardo, Stefano Bionda, and Andrea Collina. "Testing and Modelling of Elastomeric Element for an Embedded Rail System." Materials 14, no. 22 (2021): 6968. http://dx.doi.org/10.3390/ma14226968.

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Modelling of elastomeric elements of railway components, able to represent stiffness and damping characteristics in a wide frequency range, is fundamental for simulating the train–track dynamic interaction, covering issues such as rail deflection as well as transmitted forces and higher frequency phenomena such as short pitch corrugation. In this paper, a modified non-linear Zener model is adopted to represent the dependences of stiffness and damping of the rail fastening, made of elastomeric material, of a reference Embedded Rail System (ERS) on the static preload and frequency of its deforma

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Singh, Kulvinder, Iqbal Kaur, and Eduard-Marius Craciun. "Study of Transversely Isotropic Visco-Beam with Memory-Dependent Derivative." Mathematics 11, no. 21 (2023): 4416. http://dx.doi.org/10.3390/math11214416.

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Based on the modified Moore–Gibson–Thompson (MGT) model, transversely isotropic visco-thermoelastic material is investigated for frequency shift and thermoelastic damping. The Green–Naghdi (GN) III theory of thermoelasticity with two temperatures is used to express the equations that govern heat conduction in deformable bodies based on the difference between conductive and dynamic temperature acceleration. A mathematical model for a simply supported scale beam is formed in a closed form using Euler Bernoulli (EB) beam theory. We have figured out the lateral deflection, conductive temperature,

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Tomlinson, G. R., D. Pritchard, and R. Wareing. "Damping characteristics of particle dampers—some preliminary results." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 215, no. 3 (2001): 253–57. http://dx.doi.org/10.1243/0954406011520661.

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Particle dampers offer considerable potential for suppressing structural resonant conditions over a wide frequency range compared with tuned mass dampers or tuned vibration absorbers. However, they exhibit non-linear behaviour which relates to the motion of the particles that in turn is dependent on the excitation level. This communication describes some preliminary experimental results on the damping characteristics of a particle damping device which clearly show that the damping levels are dependent on the geometry of the device and the resulting motion of the particles arising from the leve

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Zhan, Tianyi, Jiali Jiang, Jianxiong Lu, Yaoli Zhang, and Jianmin Chang. "Frequency-dependent viscoelastic properties of Chinese fir (Cunninghamia lanceolata) under hygrothermal conditions. Part 2: moisture desorption." Holzforschung 73, no. 8 (2019): 737–46. http://dx.doi.org/10.1515/hf-2018-0209.

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AbstractThe frequency-dependent viscoelasticity of Chinese fir (Cunninghamia lanceolata) during moisture desorption was investigated and the applicability of the time-moisture superposition (TMS) relation on wood stiffness and damping during the moisture desorption was verified. The hygrothermal conditions for the moisture desorption were set up as six constant temperatures ranging from 30 to 80°C and three relative humidity (RH) levels at 0, 30 and 60%. Due to the elimination of water during the moisture desorption, the stiffness of the Chinese fir increased, whereas the damping decreased. Wi

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