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Journal articles on the topic 'Visco Elastic Damper'

Author: Grafiati

Published: 5 June 2025

Last updated: 24 June 2025

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1

Dadkhah Khiabani, Ehsan, Hosein Ghaffarzadeh, Babak Shiri, and Javad Katebi. "Spline collocation methods for seismic analysis of multiple degree of freedom systems with visco-elastic dampers using fractional models." Journal of Vibration and Control 26, no. 17-18 (2020): 1445–62. http://dx.doi.org/10.1177/1077546319898570.

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The visco-elastic dampers can be economically designed for response reduction of dynamical systems. Recent developments in fractional calculus have affected the modeling of visco-elastic materials. The fractional models for visco-elastic dampers, which are parsimonious, require fewer parameters in comparison with other models. In this paper, we use the visco-elastic dampers for control of structural responses. The visco-elastic damper utilizes three important parameters including damping coefficient, stiffness, and fractional order. The dynamic model of the building with visco-elastic dampers can be acquired by a system of fractional differential equations, which includes both fractional and ordinary derivatives. We apply spline collocation methods for obtaining the numerical solution of this complex system. The collocation method is implemented in a graded mesh. The discrete data of earthquake are smoothed by spline interpolation of higher degree. The introduced method is used to simulate the response of a structure with active and passive controllers. A comparison of using different dampers is considered. Also, [Formula: see text] norm of the transform function is used for response analysis. The results of simulations for four-story and 10-story buildings show significant reductions in structural responses. Moreover, our analysis presents that the large variety of values can be used for parameters of the visco-elastic damper to provide flexibility in designing appropriate visco-elastic-dampers.

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2

Kohara, Katsuhiko, Takeshi Nomura, and Kazuyoshi Koumoto. "A Development of the Visco-Elastic Damper for Timber Structure and a Suggestion of the Technological Design Assistance System." Advanced Materials Research 778 (September 2013): 714–21. http://dx.doi.org/10.4028/www.scientific.net/amr.778.714.

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Our research team developed a brace type and an angle brace type of the visco-elastic damper on seismic-response controlled structure for timber structure. We performed various dependence evaluations by the materials examination of the styrene olefin-based visco-elastic body which we developed newly. We made a structural model using the performance that loading tests in timber frame. We inspected the validity of the structural model. In addition, we built a technical support system for damper setting by the time history response analysis so that a general design architect was easy to use the damper. We could express dynamics properties of visco-elastic body properties by Voigt model, and the structural model almost accorded with an examination property value. We made a structural model of the whole frame system by Kb of installation rigidity obtained from loading tests in timber frame. Because a design level almost accorded with experimental value, the validity of the frame design on seismic-response controlled structure in consideration of the dependence (distortion, frequency, temperature) of the visco-elastic body was confirmed. This visco-elastic damper on seismic-response controlled structure acquired minister authorization of Ministry of Land, Infrastructure and Transport. In addition, this damper acquired the certification of the Japan Building Disaster Prevention Association.

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3

Sun, Huang Sheng, and Li Nuo Cheng. "Connecting Parameter Study on Adjacent Structures Linked by Dampers." Advanced Materials Research 243-249 (May 2011): 3832–38. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3832.

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In order to research the optimal parameters of dampers linking adjacent structures for seismic mitigation, two SDOF systems connected with visco-elastic damper (VED) are taken as research object and the primary structural vibration frequency ratio, connection stiffness and linking damping ratio as research parameters. Modified Kanai-Tajimi spectrum is selected to model the earthquake excitation. The peak distribution of power spectral density curves are analyzed, then the formulas of structural mean squared displacement (MSD) and research parameters is derived based on random vibration theory. Then the relationship of the adjacent structural seismic response versus the research parameters was presented. The optimal value of the linking visco-elastic damper damping ratio and stiffness ratio are investigated. Finally, the seismic responses of example structures with or without connecting dampers are contrastively analyzed. The dependence of response mitigation effective on research parameters is highlighted. The results indicate fine earthquake-reduction effectiveness of dampers connecting adjacent structures. It is also shows that optimal parameters of damper cannot reduce the seismic responses of the primary structures connected to the best extent simultaneously. The damper parameters should be determined according to the best seismic mitigation effectiveness of the primary, auxiliary structure or the combined structure system.

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4

Mazilu, Traian, and Dorina Fologea. "Rail Damper Functionality-Modelling and Experimental Determinations." Materials Science Forum 957 (June 2019): 23–32. http://dx.doi.org/10.4028/www.scientific.net/msf.957.23.

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Rail traffic is a significant source of noise pollution for inhabited areas near the railway lines, especially because of the rolling noise generated by the trains. One of the solutions to mitigate the rolling noise emerged from trains that is increasingly being applied lately is the use of rail dampers. These rail dampers are mechanical devices designed to attenuate the propagation of bending waves along the rail from the contact areas with the vehicles wheels, thus reducing the level of rail vibration and, consequently, the noise level produced by it. Most of the rail dampers include steel plates encapsulated in rubber, working as dynamic vibration absorbers with two tuned frequencies. In this paper, an experimental demonstrative rail damper which combines the visco-elastic features of the rubber and of a thin film of oil is presented as a new solution in this field. The functionality of this kind of rail damper is investigated by experimental means and the results are shown and analysed. Also, the mechanical model associate to the functional verification procedure is presented and used to determine the visco-elastic features of the rail damper.

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5

ISHIKAWA, Ritsuko, Hitoshi SUWA, and Matsutaro SEKI. "MODELING OF NON-LINEAR VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 66, no. 544 (2001): 47–52. http://dx.doi.org/10.3130/aijs.66.47_2.

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6

Chiba, T., and H. Kobayashi. "Response Characteristics of Piping System Supported by Visco-Elastic and Elasto-Plastic Dampers." Journal of Pressure Vessel Technology 112, no. 1 (1990): 34–38. http://dx.doi.org/10.1115/1.2928583.

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Improving the reliability of the piping systems can be achieved by eliminating the mechanical snubber and by reducing the response of the piping. In the seismic design of piping system, damping is one of the important parameters to reduce the seismic response. It is reported that the energy dissipation at piping supports contributes to increasing the damping ratio of piping system. Visco-elastic damper (VED) and elasto-plastic damper (EPD) were developed as more reliable, high-damping piping supports. The dynamic characteristics of these dampers were studied by the component test and the full-scale piping model test. Damping effect of VED is independent of the piping response and VED can be modeled as a complex spring in the dynamic analysis. On the other hand, damping ratio of piping system supported by EPD increases with the piping response level. So, these dampers are helpful to increase the damping ratio and to reduce the dynamic response of piping system.

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7

KATAGIHARA, Kenichi, Ryunosuke OKAMOTO, and Satsuya SODA. "RECOMMENDATIONS FOR SEISMIC STRENGTHENING DESIGN BY VISCO-ELASTIC DAMPER." AIJ Journal of Technology and Design 6, no. 10 (2000): 35–40. http://dx.doi.org/10.3130/aijt.6.35.

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8

SODA, Satsuya, Jyunichi WADA, Yuuichi HIRATA, and Hisayuki YAMANAKA. "VISCO-ELASTIC DAMPER : CYCLIC LOADING TEST TO CONSTRUCT MECHANICAL MODEL." Journal of Structural and Construction Engineering (Transactions of AIJ) 59, no. 457 (1994): 29–36. http://dx.doi.org/10.3130/aijs.59.29_1.

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9

IKAWA, Nozomu, Shinji ITO, Takehiko TANUMA, and Kazuhiro WATANABE. "Evaluation of Earthquake Response of High-rise Building with Visco-elastic Damper." Journal of JAEE 15, no. 7 (2015): 7_306–7_315. http://dx.doi.org/10.5610/jaee.15.7_306.

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10

IZUMIZAWA, Takashi, Koji TAKAHASHI, Shinichi IIZUKA, Tadamichi YAMASHITA, Yukimori YANAGAWA, and Kazuhiro TANAKA. "DEVELOPMENT OF VISCO-ELASTIC DAMPER SYSTEM INCLUDING AXIAL FORCE TRANSFER MECHANISM METHOD." AIJ Journal of Technology and Design 18, no. 39 (2012): 483–88. http://dx.doi.org/10.3130/aijt.18.483.

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11

ThejeshKumar, P., L. RaviKumar, and Raghu Yogaraju. "Impact force attenuation capabilities of elastomer, springs and their combination." Journal of Physics: Conference Series 2748, no. 1 (2024): 012002. http://dx.doi.org/10.1088/1742-6596/2748/1/012002.

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Abstract In various engineering applications like automotive safety, structural engineering, and industrial machinery, mitigating impact forces is of at most importance to protect structures, equipment and most importantly, human lives. Understanding the impact force attenuation capabilities of dampers, springs, and their combination is crucial. Dampers like elastomers are known for their exceptional ability to absorb and dissipate energy due to their visco-elastic properties. Spring on the other hand, store and release mechanical energy when compressed, offering a different approach to impact forces attenuation. Study is experimental and parametric in nature, where different damping materials like elastomers, polystyrene & foam are individually and in combination with springs of different stiffness are tested for their impact energy absorption capabilities. Tests are conducted in a dedicated test rig, wherein specimen is kept on a rigid plate which intern mounted on a peizo-electric load sensor and weights are dropped from same heights and force transmitted with time of travel is measured for each specimen and compared. Results revealed that the energy absorbed by springs is around 30% individually, which is less compared to dampers and, the combination of damper & springs. In conclusion the specimen with combination of damper & springs has high potential in absorbing impact force.

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12

Mohammed, Zameer Ahamed J. "Study and Behaviour of Seismic Load on Soft Storey Building Using Diagonal Bracing with Visco Elastic Damper." Journal of Earthquake Science and Soil Dynamics Engineering 5, no. 2 (2022): 1–18. https://doi.org/10.5281/zenodo.7186819.

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Tall building construction and developments have been rapidly increasing worldwide Development of metro cities in India there is increasing demand in High Rise Building and it is common to use the effect of masonry infill panel on the response of RC frame subjected to seismic action. In this study the effect of seismic load on soft storey building using diagonal bracing with visco elastic damper wall on high rise building is studied, because the effect of diagonal bracing must be considered for the seismic evaluation of moment resistant reinforced concrete frames Linear analysis is performed on high rise structures with various arrangements, and a G + 19 framed building is modelled for analysis. ETABS software performs all analysis. Base shear, storey displacement, and storey drift are calculated and compared for all models in this software, and the results show that the time period decreases with the incorporation of bracing with viscoelastic damper. Soft storey in high-rise buildings has a significant impact on seismic performance. The variation in floor height causes a discontinuity in the rigidity of the structure at the soft storey level. Soft storeys with varying floor heights. In this way , models are analysed . ETABS software has been used for analysis purpose which results in terms of max moment , max storey , max shear force , displacement , max axial force and drift which are critically analysed to quantify the effect of various parameters . The soft storey building with diagonal steel brace dampers is most effective and economical in seismic active areas Soft stories are subjected to larger lateral loads during earthquakes and under lateral loading. This lateral force cannot be distributed evenly along the structure's height. Because of this, the lateral forces are concentrated on the storey with the greatest displacement. The lateral force distribution along a building's height is directly related to the mass and stiffness of each storey. As a result, the dynamic analysis procedure provides more accurate distribution results of earthquake and lateral forces, as well as building height, determining the modal effects and local ductility in efficient demand.

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13

KASAI, Kazuhiko, Kosaku NISHIHARA, Wuchuan PU, Yoji OOKI, Hiroyasu SAKATA, and Kazuhiro MATSUDA. "PEAK RESPONSE EVALUATION METHOD FOR SLIP-HYSTERETIC STRUCTURE ADDED WITH VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 74, no. 646 (2009): 2227–36. http://dx.doi.org/10.3130/aijs.74.2227.

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14

PU, Wuchuan, and Kazuhiko KASAI. "PASSIVE CONTROL DESIGN METHOD FOR RC BUILDING STRUCTURE ADDED WITH VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 77, no. 671 (2012): 17–25. http://dx.doi.org/10.3130/aijs.77.17.

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15

SODA, Satsuya, and Yuji TAKAHASHI. "QUANTIFICATION OF FREQUENCY-DEPENDENT PROPERTY OF VISCO-ELASTIC DAMPER BY RANDOM LOADING METHOD." Journal of Structural and Construction Engineering (Transactions of AIJ) 62, no. 498 (1997): 43–49. http://dx.doi.org/10.3130/aijs.62.43_2.

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16

ABOSHI, Mitsuo, Mizuki TSUNEMOTO, Katsuaki SUNAKODA, Taichi MATSUOKA, Naobumi IKAHATA, and Kazuhiko SHIBATA. "462 Improvement of Damping Performance of Electric Railway Pole with Visco-elastic Damper." Proceedings of the Dynamics & Design Conference 2009 (2009): _462–1_—_462–6_. http://dx.doi.org/10.1299/jsmedmc.2009._462-1_.

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17

KASAI, Kazuhiko, Nao MINATO, and Yoshifumi KAWANABE. "PASSIVE CONTROL DESIGN METHOD BASED ON TUNING OF EQUIVALENT STIFFNESS OF VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 71, no. 610 (2006): 75–83. http://dx.doi.org/10.3130/aijs.71.75_4.

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18

KASAI, Kazuhiko, and Wuchuan PU. "PASSIVE CONTROL DESIGN METHOD FOR MDOF SLIP-HYSTERETIC STRUCTURE ADDED WITH VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 75, no. 650 (2010): 781–90. http://dx.doi.org/10.3130/aijs.75.781.

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19

KASAI, Kazuhiko, Michihiko TERAMOTO, and Yuichi WATANABE. "BEHAVIOR OF A PASSIVE CONTROL DAMPER COMBINING VISCO-ELASTIC AND ELASTO-PLASTIC DEVICES IN SERIES." Journal of Structural and Construction Engineering (Transactions of AIJ) 67, no. 556 (2002): 51–58. http://dx.doi.org/10.3130/aijs.67.51_1.

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20

YAMASHITA, Tadamichi, Jun KAWABATA, Masayuki NINOMIYA, Tetsushi INUBUSHI, Kazuhiro TANAKA, and Manabu HATTORI. "A STUDY ON DEVELOPMENT OF VISCO-ELASTIC DAMPER SYSTEM INCLUDING AXIAL FORCE TRANSFER MECHANISM METHOD." AIJ Journal of Technology and Design 17, no. 37 (2011): 915–20. http://dx.doi.org/10.3130/aijt.17.915.

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21

SATO, Daiki, Tetsuro TAMURA, and Kazuhiko KASAI. "WIND TUNNEL TESTS OF RESPONSE PROPERTY FOR TALL BUILDING HAVING VISCOUS OR VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 72, no. 617 (2007): 95–102. http://dx.doi.org/10.3130/aijs.72.95_3.

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22

Kim, Hyeong-Gook, Shinta Yoshitomi, Masaaki Tsuji, and Izuru Takewaki. "Analytical and Experimental Study on a New Stud-type Hysteretic and Visco-elastic Hybrid Damper System." Architectoni.ca 1, no. 2 (2012): 106–17. http://dx.doi.org/10.5618/arch.2012.v1.n2.2.

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23

IWATA, Norio, and Satsuya SODA. "APPLICATION OF VISCO-ELASTIC DAMPERS AND ACCELERATION-FEEDBACK ACTIVE TUNED MASS DAMPER TO HYBRID VIBRATION CONTROL SYSTEM FOR ELASTO-PLASTIC STRUCTURE." Journal of Structural and Construction Engineering (Transactions of AIJ) 62, no. 500 (1997): 45–52. http://dx.doi.org/10.3130/aijs.62.45_3.

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24

SUZUKI, Kohei, Sadaharu NAKAO, Atsushi TSUNOSHITA, and Hideyuki TAKASHIMA. "DAMPING PERFORMANCE EVALUATION AND DYNAMIC BEHAVIOR OF STUD TYPE VIBRATION CONTROL FRAME WITH NONLINEAR VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 83, no. 745 (2018): 373–83. http://dx.doi.org/10.3130/aijs.83.373.

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25

ABOSHI, Mitsuo, Mizuki TSUNEMOTO, Katsuaki SUNAKODA, Taichi MATSUOKA, Naobumi IKAHATA, and Kazuhiko SHIBATA. "Improvement of Damping Performance of Electric Railway Pole with Visco-Elastic Damper(Dynamics & Design Conference 2009)." Transactions of the Japan Society of Mechanical Engineers Series C 76, no. 765 (2010): 1171–77. http://dx.doi.org/10.1299/kikaic.76.1171.

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26

MATSUDA, Kazuhiro, and Kazuhiko KASAI. "PASSIVE CONTROL DESIGN METHOD FOR MDOF SYSTEM COMPOSED OF BILINEAR + SLIP MODEL ADDED WITH VISCO-ELASTIC DAMPER." Journal of Structural and Construction Engineering (Transactions of AIJ) 80, no. 716 (2015): 1525–35. http://dx.doi.org/10.3130/aijs.80.1525.

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27

SUGAWARA, Kazumasa, Kento SUZUKI, Kazuma OGAWA, Ryoma TANAKA, and Masayuki NAGANO. "MECHANICAL BEHAVIOR AND SIMPLIFIED MODELING METHOD OF TIMBER FRAME STRUCTURES WITH VISCO-ELASTIC DAMPER AND ELASTO-PLASTIC MEMBER." AIJ Journal of Technology and Design 26, no. 63 (2020): 531–36. http://dx.doi.org/10.3130/aijt.26.531.

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28

Ljunggren, Fredrik. "A New Technique to Reduce Vibration in Lightweight Floors." Noise & Vibration Worldwide 34, no. 10 (2003): 10–15. http://dx.doi.org/10.1260/095745603322767392.

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Lightweight floor constructions often suffer from annoying vibration. Long span floor are especially vulnerable with dynamic properties that yield both springiness due to low stiffness and resonant vibration due to poor damping. A new method, that treats resonant vibration, applicable to floors with resilient ceiling, is presented in this study. By using a piece of strategically located visco-elastic material connected to the ceiling joists, which is designed using a finite element model for an optimal position and size, it is demonstrated that the damping of the floor is increased. The results show that the damper is extremely efficient to reduce vibration of the type where floor and ceiling are oscillating out of phase to each other. The device also affects in phase modes like the fundamental one, but to a lower extent.

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29

AOKI, Takuya, Masayuki NAGANO, Toshiaki SATO, Yuichi MASAKI, and Michio IGUCHI. "PERFORMANCE EVALUATION OF WOOD FRAME STRUCTURE WITH SEISMIC CONTROL DEVICES USING VISCO-ELASTIC DAMPER BASED ON PSEUDO-DYNAMIC ANALYSIS." AIJ Journal of Technology and Design 18, no. 38 (2012): 165–70. http://dx.doi.org/10.3130/aijt.18.165.

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30

FUKUKITA, Akira, Kazuhiko MORIKAWA, Kazuhiko MAEBAYASHI, Yuichiro OGAWA, and Takehiko TERADA. "C05 Basic Study on Base Isolated Building Principally Aimed to Restrain Displacement : Experimental Result of Basic Characteristics of Visco-elastic Damper." Proceedings of the Symposium on the Motion and Vibration Control 2005.9 (2005): 377–82. http://dx.doi.org/10.1299/jsmemovic.2005.9.377.

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31

Gürgöze, M., A. N. Doğruoğlu, and S. Zeren. "On the eigencharacteristics of a cantilevered visco-elastic beam carrying a tip mass and its representation by a spring-damper-mass system." Journal of Sound and Vibration 301, no. 1-2 (2007): 420–26. http://dx.doi.org/10.1016/j.jsv.2006.10.002.

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32

SATO, Daiki, Kazuhiko KASAI, and Tetsuro TAMURA. "DEVELOPMENT OF WIND TUNNEL TEST SYSTEM CONSIDERING PASSIVE CONTROL OF TALL BUILDING AND FUNDAMENTAL STUDY ON WIND RESPONSE : Wind tunnel tests of tall building having viscous or visco-elastic damper under uniform flow." Journal of Structural and Construction Engineering (Transactions of AIJ) 71, no. 609 (2006): 65–73. http://dx.doi.org/10.3130/aijs.71.65_2.

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33

M., Fayed, Mourad S., Embabay A., and Ahmed O. "MITIGATION OF POUNDING BETWEEN ADJACENT BUILDINGS USING VISCO-ELASTIC DAMPERS." International Conference on Civil and Architecture Engineering 6, no. 6 (2006): 54–74. http://dx.doi.org/10.21608/iccae.2006.45786.

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34

Lee, Yujin, Izuru Takewaki, Koji Uetani, and Kazuo Inoue. "Critical damping of structures with elastically supported visco-elastic dampers." Earthquake Engineering & Structural Dynamics 31, no. 2 (2001): 481–86. http://dx.doi.org/10.1002/eqe.139.

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35

Kamrava, Alireza. "Seismic Isolators and their Types." Current World Environment 10, Special-Issue1 (2015): 27–32. http://dx.doi.org/10.12944/cwe.10.special-issue1.05.

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In this paper I would like to describe about what seismic isolation is., seismic isolators, their types ,how do they work? ,their advantage and disadvantage. In seismic isolator types you will read about Elastomeric bearings, Natural and Synthetic Rubber Bearings , Lead Rubber Bearings , Friction pendulum bearing, Supplymetal Damping Devices like Buckling Restrained Brace, Fluid Dampers, Visco-Elastic Dampers,Friction Dampers, Hysteretic Dampers(Yeilding Dampers).In advantage and disadvantage part you will read some tips about using seismic isolators. In conclusion you will read a review about seismic isolation and using seismic isolators.

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36

Ziauddin Patowary, Mohammed, and Abdul Kadir Marsono. "Seismic Analysis for Multi-Story Building Horizontally Damped Above Basement Level." International Journal of Engineering & Technology 7, no. 2.29 (2018): 955. http://dx.doi.org/10.14419/ijet.v7i2.29.14290.

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Due to the urbanization multi-story building with underground story for parking space and storage are very common in practice. Now a day, seismic energy dissipating devices are being used for various types of structures and located in basements which are difficult to maintain. The main objective is to evaluate the effectiveness of horizontal dampers in the ground floor level of the multi-story building above basement. Among different types of dampers, visco-elastic [VE] dampers are used for this numerical study. Comparing with other types of passive energy dissipating devices, visco-elastic [VE] dampers are considered most suitable. For the better understanding of the effectiveness of horizontal dampers, stiff foundation system is considered thus soil-structure interaction is omitted. In this numerical study, seismic response of different hypothetical structures analyzed having different underground stories and horizontal dampers only in the ground level. Modeling and analysis of the structures and installation of the dampers are done by using finite element modeling software [ETABS]. Time history analysis was used to simulate the response of the structures. Sabah earthquake [05/June/2015] with the PGA of 0.126g was used for the time history analysis. Different dynamics parameters such as natural time period, displacement, base shear and inter-story drift were evaluated. Changes in the results among the structures demonstrated the efficiency of horizontal dampers. Optimum locations of the horizontal dampers were also revealed in this study in the basis of the analysis results.

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37

Bauer, Helmut F., and Werner Eidel. "Natural damped frequencies of a rotating visco-elastic infinitely long column." Forschung im Ingenieurwesen 62, no. 7-8 (1996): 214–27. http://dx.doi.org/10.1007/bf02601428.

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38

Bauer, Helmut F., and Werner Eidel. "Axisymmetric damped frequencies of a rotating finite visco-elastic liquid column." Acta Astronautica 38, no. 9 (1996): 689–98. http://dx.doi.org/10.1016/0094-5765(96)00074-4.

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39

Gürgöze, M., and S. Zeren. "On the eigencharacteristics of a centrifugally stiffened, visco-elastic beam." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223, no. 8 (2009): 1767–75. http://dx.doi.org/10.1243/09544062jmes1336.

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The present study is concerned with the out-of-plane vibrations of a rotating, internally damped (Kelvin—Voigt model) Bernoulli—Euler beam carrying a tip mass, which can be thought of as a simplified model of a helicopter rotor blade or a blade of an auto-cooling fan. The differential eigenvalue problem set up is solved by using the Frobenius method of solution in a power series. The developed characteristic equation is then solved numerically. The simulation results are tabulated for a variety of non-dimensional rotational speeds, tip mass, and internal damping parameters. These are compared with the results of conventional finite element (FE) modelling as well and excellent agreement is obtained. Furthermore, it is seen that the numerical calculations according to the proposed solution method need much less computer time as compared to the conventional FE method.

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40

Aga, Saima, and Madhuraj Naik. "Parametric study on response of multi-storied building equipped with viscous and visco-elastic dampers subjected to ground motions." IOP Conference Series: Earth and Environmental Science 1130, no. 1 (2023): 012024. http://dx.doi.org/10.1088/1755-1315/1130/1/012024.

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Abstract Viscous and viscoelastic dampers are passive energy dissipation devices that are used in multi storied buildings to reduce the effect of lateral vibrations arising from earthquakes and wind. Passive devices are those that require no energy to function. The performance of such devices can be affected by many factors like seismic zone, building height, soil type and placement of dampers. In this paper, the effect of using viscous and visco-elastic dampers on response of multi-story building was investigated. For this purpose, multi-story building was modelled in Finite element software. Various parameters like height of building, seismic zone, soil type and placement of dampers were varied in the FEM model. To investigate the seismic response, non-linear time history analysis was performed by subjecting the building to ground motion (Imperial Valley 1940). Seismic responses of the models were studied and compared in terms of results like top floor (roof) displacement, storey drift and ground floor level (base) shear. It was found that viscous dampers are more effective in dissipating energy. Optimum position of dampers was also found out. All the parametric results were obtained and plotted in graphs.

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41

Singh, A. K., Z. Parween, A. Das, and A. Chattopadhyay. "Influence of Loosely-Bonded Sandwiched Initially Stressed Visco-Elastic Layer on Torsional Wave Propagation." Journal of Mechanics 33, no. 3 (2016): 351–68. http://dx.doi.org/10.1017/jmech.2016.107.

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AbstractAssumption that the common interfaces of the media are perfectly bonded may not be always true. Situation may arise that composition of the two medium may be responsible for weakening the contact between them. So, it becomes obligatory to consider a loosely bonded interface in such cases which may affect the propagation of elastic waves through them. This paper thrashes out the propagation of torsional surface wave in an initially stressed visco-elastic layer sandwiched between upper and lower initially stressed dry-sandy Gibson half-spaces, theoretically. Both the upper and lower dry-sandy Gibson half-spaces are considered to be loosely-bonded with the sandwiched layer. Mathematical model is proposed and solution in terms of Whittaker's and Bessel's function is obtained. Velocity equation is obtained in closed form, its real part deals with the dispersion phenomenon whereas its imaginary part provides the damping characteristics. Influence of heterogeneities, sandiness, gravity parameters, initial-stresses, loose-bonding and internal-friction on the phase and damped velocities of torsional wave are computed numerically and depicted graphically. Deduced dispersion equation and damped velocity equation matches with classical Love-wave equation and vanishes identically for the isotropic case respectively.

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42

Kamatchi, P., K. Rama Raju, K. Ravisankar, and Nagesh R. Iyer. "Design of Visco-Elastic Dampers for RC Frame for Site-Specific Earthquake." Journal of The Institution of Engineers (India): Series A 97, no. 4 (2016): 359–66. http://dx.doi.org/10.1007/s40030-016-0181-z.

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43

TANABE, Yosuke, Akira INOUE, Tsukasa FUNANE, Hisatoshi KIMURA, Makoto ITO, and Koichi WATANABE. "Complex Modal Analysis for Generally Viscous and Visco-elastic Damped Vibratory System." Proceedings of Mechanical Engineering Congress, Japan 2023 (2023): F181–2. http://dx.doi.org/10.1299/jsmemecj.2023.f181-2.

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44

Chen, Yong, Zuguang Ying, and Guohui Shen. "Exact solution of free vibration of adjacent buildings interconnected by visco-elastic dampers." Theoretical and Applied Mechanics Letters 10, no. 2 (2020): 132–40. http://dx.doi.org/10.1016/j.taml.2020.01.016.

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45

KASAI, Kazuhiko, Ryosuke OGAWA, Wuchuan PU, and Takatoki KIYOKAWA. "PASSIVE CONTROL DESIGN METHOD FOR ELASTO-PLASTIC FRAME ADDED WITH VISCO-ELASTIC DAMPERS." Journal of Structural and Construction Engineering (Transactions of AIJ) 75, no. 655 (2010): 1625–33. http://dx.doi.org/10.3130/aijs.75.1625.

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46

Dadkhah, Ehsan, Babak Shiri, Hosein Ghaffarzadeh, and Dumitru Baleanu. "Visco-elastic dampers in structural buildings and numerical solution with spline collocation methods." Journal of Applied Mathematics and Computing 63, no. 1-2 (2019): 29–57. http://dx.doi.org/10.1007/s12190-019-01307-5.

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47

Selmani, Mohamed, and Lynda Selmani. "A frictional contact problem with normal damped response for elastic-visco-plastic materials." Rendiconti del Circolo Matematico di Palermo 59, no. 1 (2010): 67–85. http://dx.doi.org/10.1007/s12215-010-0004-4.

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48

Pawlak, Zdzisław. "Dynamic analysis of passively damped bar structures using visco-elastic layers embedded in nodes." MATERIAŁY BUDOWLANE 1, no. 12 (2024): 6–15. https://doi.org/10.15199/33.2024.12.01.

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49

LUONGO, ANGELO, and FRANCESCO D'ANNIBALE. "BIFURCATION ANALYSIS OF DAMPED VISCO-ELASTIC PLANAR BEAMS UNDER SIMULTANEOUS GRAVITATIONAL AND FOLLOWER FORCES." International Journal of Modern Physics B 26, no. 25 (2012): 1246015. http://dx.doi.org/10.1142/s0217979212460150.

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The mechanical behavior of a non-conservative non-linear beam, internally and externally damped, undergoing codimension-1 (static or dynamic) and codimension-2 (double-zero) bifurcations, is analyzed. The system consists of a purely flexible, planar, visco-elastic beam, fixed at one end, loaded at the tip by a follower force and a dead load, acting simultaneously. An integro-differential equation of motion in the transversal displacement, with relevant boundary conditions, is derived. Then, the linear stability diagram of the trivial rectilinear configuration is built-up in the space of the two loading parameters. Attention is then focused on the double-zero bifurcation, for which a post-critical analysis is carried out without any a-priori discretization. An adapted version of the Multiple Scale Method, based on a fractional series expansion in the perturbation parameter, is employed to derive the bifurcation equations. Finally, bifurcation charts are evaluated, able to illustrate the system behavior around the codimension-2 bifurcation point.

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Xiang, Yang, and Hua-Rong Xie. "Probabilistic effectiveness of visco-elastic dampers considering earthquake excitation uncertainty and ambient temperature fluctuation." Engineering Structures 226 (January 2021): 111379. http://dx.doi.org/10.1016/j.engstruct.2020.111379.

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