Relevant bibliographies by topics / Shock and Vibration

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Shock and Vibration'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Shock and Vibration"

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Chen, Lei. "Distributed Hybrid Vibration Absorbers for Shock and Forced Vibrations." Applied Mechanics and Materials 166-169 (May 2012): 1709–12. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1709.

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The control methods used for free/shock vibration suppression are normally different from those used for forced vibration cancellation, because shock vibration is regarded as a type of transient vibration that is different in nature from steady-state forced vibration. However, both steady-state and shock excitations may occur in flexible structures, so there is a need to control both types of vibrations. To show the integration of the two different vibration control strategies, a hybrid control system based on adhesive strain gauges and PZT patches is proposed to construct a distributed resonant absorber and shock absorber together. The hybrid system is governed by a control arbitrator that decides which absorber should be active according to the different excitation conditions. The effectiveness of the integrated system is shown through simulation and experimental studies.
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Schellenberg, David, Mareile Kriwall, Malte Stonis, and Bernd-Arno Behrens. "Stoß- und Schwingungsreduktion von Schmiedezangen/Shock and vibration reduction of forging tongs." wt Werkstattstechnik online 110, no. 09 (2020): 634–38. http://dx.doi.org/10.37544/1436-4980-2020-09-64.

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Dieser Beitrag stellt Konzepte zur Stoß- und Schwingungsreduktion einer Schmiedezange vor. In der Schmiedeindustrie werden bei der Bearbeitung von Schmiedeteilen häufig handgeführte Schmiedezangen eingesetzt. Hierbei wirken auf die Mitarbeiter hohe Belastungen durch Stöße und Schwingungen der Umformmaschinen ein. Ein erstelltes Simulationsmodell evaluiert Konzepte zur Reduzierung der Stöße und Schwingungen während des Schmiedens.   The paper presents approaches for reducing shock and vibration in forging tongs. In the forging industry, hand-operated forging tongs are often used for machining forged parts. Here, employees are exposed to high levels of shocks and vibrations from the forming machines. A simulation model that has been created evaluates methods for reducing shock and vibration during forging.
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Harmoko, Hendri, Fook Fah Yap, Nader Vahdati, and Chuan Li. "Design and Analysis of Shock and Random Vibration Isolation of Operating Hard Disk Drive in Harsh Environment." Shock and Vibration 16, no. 2 (2009): 143–54. http://dx.doi.org/10.1155/2009/959714.

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An effective vibration isolation system is important for hard disk drives (HDD) used in a harsh mechanical environment. This paper describes how to design, simulate, test and evaluate vibration isolation systems for operating HDD subjected to severe shock and random vibrations based on military specifications MIL-STD-810E. The well-defined evaluation criteria proposed in this paper can be used to effectively assess the performance of HDD vibration isolation system. Design concepts on how to achieve satisfactory shock and vibration isolation for HDD are described. The concepts are tested and further enhanced by the two design case studies presented here. It is shown that an effective vibration isolation system, that will allow a HDD to operate well when subjected to severe shock and random vibration, is feasible.
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Ghasemloonia, Ahmad, D. Geoff Rideout, Stephen D. Butt, and Ali Hajnayeb. "Elastodynamic and finite element vibration analysis of a drillstring with a downhole vibration generator tool and a shock sub." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 8 (July 24, 2014): 1361–84. http://dx.doi.org/10.1177/0954406214543491.

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Applying high-frequency axial oscillation into an oilwell drillstring in the “bottom-hole assembly” (BHA) has the potential to enhance drilling efficiency in extended reach wells. Downhole vibration generator tools such as agitators reduce the drillstring–wellbore friction and enhance the rate of penetration. However, introducing controlled vibrations into the drillstring can result in undesired vibration waves propagating along the drillstring, leading to inefficient drilling and catastrophic fatigue failure of the BHA components, “measurement-while-drilling” tools, and mud motors. A dynamic model of the entire drillstring, including vibration generators and shock subs, is required to study the effect of vibration generators on the complex nonlinear coupled axial-lateral dynamics of a drillstring inside a wellbore, to study the effect of vibration tools on the developed cutting force at the bit, and to facilitate simulation-based design of shock subs. A dynamic finite element model (FEM) and an analytical elastodynamic model, both including the vibration generator tool and a shock sub, have been developed. The “Bypassing PDEs” method was implemented on the Lagrangian of the system to develop the analytical equations. A multi-mode expanded Galerkin’s approximation, in conjunction with a multi-span BHA and Hertzian contact assumption, allowed analysis of multiple BHA contact points and, thus, more realistic estimates of drilling rotary speeds that can cause excessive vibration. The models also include torque, mud damping, spatially varying axial force, geometric nonlinearity, and axial stiffening. While the analytical model has fast running time and symbolic solution, the FEM model enables easy reconfiguration and future extensions of model geometry, interactions, and modified BHA configurations. There is agreement between the analytical and FEM simulation results for the vibration suppression ability of the shock sub, dynamic amplification of the vibrating tool force, critical rotary speeds, axial force along the drillstring, axial and lateral displacements, and the contact locations and severity.
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Suryawanshi, Sagar. "A Review on Mechanical Motion Rectifier for Energy Harvesting." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (August 31, 2021): 2007–16. http://dx.doi.org/10.22214/ijraset.2021.37680.

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Abstract: The conventional vehicle suspension dissipates the mechanical vibration energy in the form of heat which waste considerable energy. The regenerative suspensions have attracted much attention in recent years for the improvement of vibration attenuating performance as well as the reduction of energy dissipation. In fact, the vibrations in some situations can be very large, for example, the vibrations of tall buildings, long vehicle systems, railroads and ocean waves. With the global concern on energy and environmental issues, energy harvesting from large-scale vibrations is more attractive. This paper introduces the existing research and significance of regenerative shock absorbers and reviews the potential of automotive vibration energy recovery techniques; then, it classifies and summarizes the general classifications of regenerative shock absorbers. Keywords: Mechanical vibration, regenerative suspension, energy dissipation, railroads, ocean waves, vehicle.
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Plunkett, R. "Shock and Vibration Instrumentation." Shock and Vibration Digest 19, no. 1 (January 1, 1987): 3–5. http://dx.doi.org/10.1177/058310248701900102.

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Elahinia, Mohammad, Constantin Ciocanel, The M. Nguyen, and Shuo Wang. "MR- and ER-Based Semiactive Engine Mounts: A Review." Smart Materials Research 2013 (February 20, 2013): 1–21. http://dx.doi.org/10.1155/2013/831017.

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Hybrid propulsion technologies, including hybrid electric and hydraulic hybrid, equip vehicles with nonconventional power sources (in addition to the internal combustion engine) to provide higher fuel efficiency. However, these technologies tend to lead to higher levels of noise, vibration, and harshness in the vehicles, mainly due to the switching between the multiple power sources involved. In addition, the shocks and vibrations associated with the power sources switching may occur over a wide range of frequencies. It has been proven that passive vibration isolators (e.g., elastomeric and hydraulic mounts) are unable to mitigate or totally isolate such shocks and vibrations. Active mounts, while effective, are more complex, require significant power to operate, and can lead to system instabilities. Semiactive vibration isolators have been shown to be as effective as active mounts while being less complex and requiring less power to operate. This paper presents a review of novel semiactive shock and vibration isolators developed using magnetorheological and electrorheological fluids. These fluids change their yield stress in response to an externally applied magnetic and electric field, respectively. As a result, these fluids allow one to transform a passive hydraulic vibration isolator into a semiactive device.
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Титова, Ю. Ф., and С. Н. Яковлев. "Calculation of the frequency of own oscillations of polyurethane shock absorbers used in shipbuilding." MORSKIE INTELLEKTUAL`NYE TEHNOLOGII), no. 4(50) (November 23, 2020): 152–57. http://dx.doi.org/10.37220/mit.2020.50.4.056.

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В работе приведено обоснование необходимости применения амортизаторов и замены традиционного эластомерного материала резины на более совершенный материал – полиуретан. Целью работы является экспериментальное исследование деформативности полиуретанового виброизоляционного массива амортизатора и получение расчетной зависимости для определения собственной частоты колебаний системы «агрегат-амортизатор». В работе представлен подробный анализ зависимости коэффициента виброизоляции от соотношения частот вынужденных и свободных колебаний. Отмечено, что эффективность виброизоляции тем выше, чем больше это соотношение частот. Учитывая, что частота вынужденных колебаний - величина заданная, для повышения эффективности виброизоляции следует понижать частоту собственных колебаний амортизатора благодаря применению новых виброизоляционных материалов. В качестве эластомерного материала предложен полиуретан фирмы «Synair» (Великобритания) твердостью 40,45 и 50 ShA. Приведено описание нагружающего устройства для исследования деформативности виброизоляционного массива амортизатора серии КАС (корабельный амортизатор сварной). Получена эмпирическая зависимость коэффициента ужесточения в зависимости от коэффициента формы виброизоляционного массива амортизатора. Представлена эмпирическая зависимость по определению модуля упругости эластомерного материала виброизоляционного массива амортизатора в зависимости от условий контактирования на торцах и фактора формы массива. Представлена расчетная зависимость по определению частоты собственных колебаний амортизатора в зависимости от величины статической деформации. Представленная зависимость позволяет на стадии проектирования определить собственную частоту колебаний и предупредить возникновение такого опасного явления, как резонанс. The paper substantiates the need for the use of shock absorbers and the replacement of the traditional elastomeric rubber material with a more advanced material - polyurethane. The aim of the work is an experimental study of the deformability of a polyurethane vibration-isolating array of a shock absorber and obtaining a calculated dependence for determining the natural frequency of oscillations of the aggregate-shock absorber system. The paper presents a detailed analysis of the dependence of the vibration isolation coefficient on the ratio of the frequencies of forced and free vibrations. It is noted that the effectiveness of vibration isolation is higher, the greater the ratio of the frequencies of forced and natural vibrations. Taking into account the fact that the frequency of forced vibrations is a given value, to increase the efficiency of vibration isolation, it is necessary to reduce the frequency of natural vibrations of the shock absorber due to the use of new vibration insulation materials. The work describes the loading device for studying the deformability of the vibration-isolating array of the KAS series shock absorber (welded ship shock absorber). An empirical dependence of the tightening coefficient is obtained depending on the shape coefficient of the vibration-isolating array of the shock absorber. The paper presents a calculated dependence on determining the frequency of natural oscillations of the shock absorber depending on the magnitude of the static deformation.
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Johnson, Gordon G. "Vibration and shock attenuating articles and method of attenuating vibrations and shocks therewith." Journal of the Acoustical Society of America 111, no. 4 (2002): 1513. http://dx.doi.org/10.1121/1.1479046.

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Naggar, M. Hesham El, and Abdul Ghafar Chehab. "Vibration barriers for shock-producing equipment." Canadian Geotechnical Journal 42, no. 1 (February 1, 2005): 297–306. http://dx.doi.org/10.1139/t04-067.

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Most modern manufacturing facilities have hammers or presses in addition to precision cutting equipment as their production machinery. Foundations supporting hammers and presses experience powerful dynamic effects. These effects may extend to the surroundings and affect labourers, other sensitive machines within the same facility, or neighbouring residential areas. To control vibration problems, wave barriers may be constructed to isolate vibrations propagating to the surroundings. This paper examines the efficiency of both soft and stiff barriers in screening pulse-induced waves for foundations resting on an elastic half-space or a layer of limited thickness underlain by rigid bedrock. The effectiveness of concrete, gas-cushion, and bentonite trenches as wave barriers is examined for different cases of soil layer depth, trench location, and embedment of the foundation. The model was formulated using the finite element method, and the analysis was performed in the time domain. The efficiency of different types of wave barriers in vibration isolation for shock-producing equipment was assessed and some guidelines for their use are outlined.Key words: hammer foundation, impact load, gas-cushion trenches, concrete trenches, soil–bentonite trench, finite element modeling.
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Dissertations / Theses on the topic "Shock and Vibration"

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Vijayan, Kiran. "Vibration and shock amplification of drilling tools." Thesis, University of Cambridge, 2012. https://www.repository.cam.ac.uk/handle/1810/283896.

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Walter, Patrick L. "FILTERING CONSIDERATIONS WHEN TELEMETERING SHOCK AND VIBRATION DATA." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/607681.

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International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The accurate measurement of shock and vibration data via flight telemetry is necessary to validate structural models, indicate off-nominal system performance, and/or generate environmental qualification criteria for airborne systems. Digital telemetry systems require anti-aliasing filters designed into them. If not properly selected and located, these filters can distort recorded time histories and modify their spectral content. This paper provides filter design guidance to optimize the quality of recorded flight structural dynamics data. It is based on the anticipated end use of the data. Examples of filtered shock data are included.
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SVOBODA, LADISLAV, LIBUŠE SMOLÍKOVÁ, VLADIMIL MUFF, DARINA HARTLOVÁ, and LADISLAV LOUDA. "IMPULSIVE VIBRATION AND EXPOSURE LIMIT." Nagoya University School of Medicine, 1994. http://hdl.handle.net/2237/16064.

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Zheng, Wei, and 鄭偉. "Shock vibration resistance and direct tensile strength of concrete." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31242753.

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Karshenas, Amir Masood. "Random vibration and shock control of an electrodynamic shaker." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/1170.

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Zheng, Wei. "Shock vibration resistance and direct tensile strength of concrete." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23273124.

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Carwell, James W. "PYROTECHNIC SHOCK AND RANDOM VIBRATION EFFECTS ON CRYSTAL OSCILLATORS." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/607695.

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International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada
Today’s telemetry specifications are requiring electronic systems to not only survive, but operate through severe dynamic environments. Pyrotechnic shock and Random Vibration are among these environments and have proven to be a challenge for systems that rely on highly stable, low phase noise signal sources. This paper will mathematically analyze how Pyrotechnic shock and Random Vibration events deteriorate the phase noise of crystal oscillators (XO).
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Walter, Patrick L. "OPTIMIZING FLIGHT SHOCK AND VIBRATION MEASUREMENT BY RF LINKS." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/609222.

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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California
Acquiring shock and vibration data from flight vehicles through rf telemetry links has numerous associated challenges. Yet, these measurements are important to establish environmental specifications to provide a basis for system or component design and testing. The principal limitation in acquiring these measurements is the frequency bandwidth available for data transmission. This limited bandwidth is often responsible for invalid data being accepted as valid. This work provides a brief review of time and frequency division multiplexing to identify the potential error contributors to shock and vibration measurements. Its focus is on the design of acceleration measurement systems to eliminate these errors and optimize individual measurement channel performance.
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Eshleman, Eric D. "Vibration and shock isolation through use of passive, nonlinear mounts." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/20019.

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Son, Lovely. "STUDIES ON SHOCK VIBRATION CONTROL BY MOMENTUM EXCHANGE IMPACT DAMPER." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/49140.

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学位授与大学：京都大学 ; 取得学位: 博士(工学) ; 学位授与年月日: 2007-09-25 ; 学位の種類: 新制・課程博士 ; 学位記番号: 工博第2859号 ; 請求記号: 新制/工/1420 ; 整理番号: 25544
Kyoto University (京都大学)
0048
新制・課程博士
博士(工学)
甲第13388号
工博第2859号
新制||工||1420(附属図書館)
25544
UT51-2007-Q789
京都大学大学院工学研究科精密工学専攻
(主査)教授 松久 寛, 教授 吉村 允孝, 教授 松原 厚
学位規則第4条第1項該当
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Books on the topic "Shock and Vibration"

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Mechanical vibration & shock. New York, NY: Taylor & Francis, 2002.

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Vibration and shock handbook. Boca Raton: Taylor & Francis, 2005.

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Piersol, Allan G., and Thomas L. Paez. Harris' shock and vibration handbook. 6th ed. New York: McGraw-Hill, 2010.

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Lalanne, Christian. Mechanical vibration and shock analysis. 2nd ed. London: ISTE, 2009.

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Freeman, Michael T. Pioneers of shock and vibration. Arlington, Va: Shock and Vibration Information Analysis Center, 1996.

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Pilkey, Walter D. 58th Shock and Vibration Symposium: Proceedings of a conference sponsored by the Department of Defense and the National Aeronautics and Space Administration, and held in Huntsville, Ala., October 13-15, 1987. Huntsville, Ala: Marshall Space Flight Center, 1987.

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N, Bolotnik N., and Pilkey Walter D, eds. Optimal protection from impact, shock and vibration. Amsterdam, Netherlands: Gordon and Breach Science Publishers, 2001.

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Theory of vibro-impact systems and applications. Berlin: Springer, 1998.

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International Conference on Modern Practice in Stress and Vibration Analysis (4th 2000 Nottingham). Modern practice in stress and vibration analysis: Proceedings of the fourth International Conference on Modern Practice in Stress and Vibration Analysis, Nottingham, UK, 5-7 September 2000. Solihull: EMAS, 2000.

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1984-, Guo Yu, ed. Vibro-impact dynamics. Chichester, West Sussex: Wiley, 2013.

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Book chapters on the topic "Shock and Vibration"

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Rao, Singiresu S. "Vibration and Shock." In Mechanical Engineers' Handbook, 1204–29. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/0471777447.ch34.

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Matisoff, Bernard S. "Shock and Vibration Design." In Handbook Of Electronics Packaging Design and Engineering, 163–76. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-7047-5_7.

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Karnovsky, Igor A., and Evgeniy Lebed. "Shock and Spectral Theory." In Theory of Vibration Protection, 519–60. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28020-2_14.

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Karnovsky, Igor A., and Evgeniy Lebed. "Human Operator Under Vibration and Shock." In Theory of Vibration Protection, 623–59. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28020-2_17.

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Méolans, J. G., M. Mouti, F. Lordet, and A. Chauvin. "Vibration-Dissociation Relaxation Phenomena in Shock-Heated Nitrogen." In Shock Waves @ Marseille II, 279–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-78832-1_46.

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Gaberson, Howard A. "Estimating Shock Severity." In Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5, 515–32. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9428-8_43.

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Gierke, Henning E. von. "Effects of Vibration and Shock on People." In Encyclopedia of Acoustics, 1761–79. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470172544.ch145.

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Meisner, Robert, and Dennis Young. "Shock and Vibration Testing of Packaging Materials." In Food Packaging Materials, 233–50. Boca Raton : CRC Press, 2017.: CRC Press, 2017. http://dx.doi.org/10.4324/9781315374390-10.

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Paez, Thomas L. "Random Vibration – History and Overview." In Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5, 105–27. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9428-8_9.

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Baker, Matthew, Kelsey Neal, Katrina Sweetland, Garrison Stevens, Dustin Harvey, and Stuart Taylor. "Developing Conservative Mechanical Shock Specifications." In Shock & Vibration, Aircraft/Aerospace, Energy Harvesting, Acoustics & Optics, Volume 9, 43–51. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30087-0_5.

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Conference papers on the topic "Shock and Vibration"

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Kumagai, Kazufumi, Toshiro Abe, John L. Bretl, Teruhiko Ishigaki, and Ryugo Takgi. "A Shock Absorber Vibration Analysis - High-Frequency and Low-Frequency." In Noise & Vibration Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1991. http://dx.doi.org/10.4271/911068.

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Rao, Mohan D., Scott Gruenberg, and Homa Torab. "Measurement of Dynamic Properties of Automotive Shock Absorbers for NVH." In Noise & Vibration Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-1840.

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DiFiore, Amanda M., Abdullatif K. Zaouk, Neil J. Mansfield, and S. K. John Punwani. "Whole-Body Vibration in Locomotive Cabs." In ASME 2011 Rail Transportation Division Fall Technical Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/rtdf2011-67016.

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Locomotives produce vibrations and mechanical shocks from irregularities in the track, structural dynamics, the engines, the trucks, and train slack movement (Mansfield, 2005). The different directions of the irregularities give rise to car-body vibrations in multiple axes including the following: • Longitudinal, or along the length of the train (x); • Lateral, or the side-to-side direction of the train (y); • Vertical (z). Some reports suggest that acceleration at the seat pan is greater than that at the floor, indicating that the seat may amplify the vibration (Johanning, et al., 2006; Mansfield, 2005; Oborne & Clarke, 1974; Transport, 1980). The magnitude of vertical vibration in rail vehicles is reportedly well below many other types of vehicles (Dupuis & Zerlett, 1986; Griffin, 1990; Johanning, 1998). However, some research reports that rail vehicles experience far more lateral vibratory motion than cars and trucks (Lundstrom & Lindberg, 1983). Many factors influence the impact of shock felt by the engineer including train speed, consist, engineer control skills, anticipation of the shock, motion amplitude, shock duration, and body posture. Shock events and vibration affect ride quality; however, shocks are less controllable by locomotive design. Common sources of mechanical shock are coupling and slack run-ins and run-outs (Multer, et al., 1998). While there are investigations of whole-body vibration (WBV) in locomotive cabs reported in the literature, there have been no studies to date that have examined long-haul continuous vibrations (> 16 hr). The authors describe a long-haul WBV study collected on a 2007 GE ES44DC locomotive. It is the first in a series of studies sponsored by the Federal Railroad Administration (FRA) to examine WBV and shock in locomotive cabs. The researchers recorded vibration data using 2 triaxial accelerometers on the engineers’ seat: a seat pad accelerometer placed on the seat cushion and a frame accelerometer attached to the seat frame at the base. Data collection occurred over 550 track miles for 16hr 44min. ISO 2631-1 defines methods for the measurement of periodic, random and transient WBV. The focus of ISO 2631-5 is to evaluate the exposure of a seated person to multiple mechanical shocks from seat pad measurements. The research team collected and analyzed vibrations in accordance with ISO 2631-1 and ISO 2631-5. The results from the study as well as future planned long-haul studies will provide a benchmark set of WBV metrics that define the vibration environment of present-day locomotive operations.
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Blandino, Theresa, and Aldo Ferri. "Shock and Vibration Isolation Using Dynamic Mounts With Internal Damping." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86214.

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Shock isolation systems are often modeled as having lumped stiffness and damping characteristics. However, the isolation performance may be improved if the isolation mount is allowed to have internal dynamics. Previous work has considered several different ways of disrupting the disturbance as it propagates along the length of a multi-degree-of-freedom mount. In this paper, the role of internal damping of the mount is re-examined. Furthermore, the damping model is extended to allow different levels of damping in different response regimes. Through simulation of the shock response, the findings show that the optimal level of internal damping depends on the magnitude of the input shock. For small shocks, performance is best for a relatively high level of damping, but for larger shocks, the best damping value drops to a much lower value. The effect on isolation performance of having different damping levels in different response regimes is shown to be fairly modest, and is shown to depend on the input excitation level.
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Lee, Jin-Kyu, Yon-do Chun, Pil-wan Han, Deok-je Bang, Minh-Trung Duong, and Byoung-gun Park. "Energy Harvesting System using Shock Absorber Vibration." In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC). IEEE, 2018. http://dx.doi.org/10.1109/esars-itec.2018.8607635.

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Li, Ming, and Mingjie Liu. "Micro-system for shock and vibration measurement." In Instruments (ICEMI). IEEE, 2009. http://dx.doi.org/10.1109/icemi.2009.5274167.

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Cherng, John G., Tone Ge, John Pipis, and Richard Gazala. "Characterization of Air-Borne Noise of Shock Absorber by Using Acoustics Index Method." In Noise & Vibration Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-1838.

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Smith, Eric, and Al Ferri. "Shock and Vibration Isolation Using Internally Rotating Masses." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47758.

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This paper considers the use of a chain of springs and masses to reduce the transmission of shock and vibration through the system. The masses are equipped with internally rotating masses that absorb some of the axial vibration into internal kinetic energy of the masses. The internal masses have viscous damping, but no elastic or gravitational restraint. Previous research has shown that a single cart system attached to a vibrating structure can help mitigate shock through targeted energy transfer. This paper examines the potential for shock isolation provided by a chain of such systems. Through numerical simulations, tradeoffs are examined between displacement and transmitted force.
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Furudate, Michiko, Toshiyuki Suzuki, and Keisuke Sawada. "Vibration-dissociation coupling effects on shock standoff distances." In 34th Thermophysics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-2499.

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Zhao, Cun-Sheng, Shi-Jian Zhu, and Zhen-Zhong Zhang. "Optimization Design of Vibration and Shock Isolation System." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14035.

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The combination optimization design problem of vibration isolation and shock resistance system is studied in consideration of acoustical concealment performance and lifeforce of ships. The weakness of design method based on continuity is pointed out and combination optimal design method is brought forward. Then the limiting performance of shock isolation system is analyzed and two realization methods are discussed. One method is to adopt linear stiffness component with large damping. The other method is to use multiple linear stiffness components without damping. Amplitude of steady excitation is much smaller than that of shock input during experiment. Experimental results showed that the optimal loss factor is still 0.4 when the stiffness of shock bumper is much larger than that of vibration isolator, just the same with that suffered from only shock loads. Experimental results also showed that limiting performance can be achieved by configuration optimal design using multiple linear components. The two discussed methods can be used to direct engineering application.
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Reports on the topic "Shock and Vibration"

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Maheras, Steven J., Erik A. Lahti, and Steven B. Ross. Transportation Shock and Vibration Literature Review. Office of Scientific and Technical Information (OSTI), June 2013. http://dx.doi.org/10.2172/1083410.

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Pusey, Henry C. Information Resources Support on Shock and Vibration. Fort Belvoir, VA: Defense Technical Information Center, April 1988. http://dx.doi.org/10.21236/ada201271.

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ACOUSTICAL SOCIETY OF AMERICA NEW YORK. Minutes - Accredited Standards Committee on Mechanical Shock and Vibration, S2. U.S. Tag for ISO/TC108 Mechanical Vibration and Shock. Fort Belvoir, VA: Defense Technical Information Center, August 1991. http://dx.doi.org/10.21236/ada239612.

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Tipton, D. G. Hydride transport vessel vibration and shock test report. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/672089.

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ACOUSTICAL SOCIETY OF AMERICA NEW YORK. Minutes: Accredited Standards Committee on Mechanical Vibration and Shock, S2. U.S. Tag for ISO/TC 108 Mechanical Vibration and Shock. Fort Belvoir, VA: Defense Technical Information Center, October 1993. http://dx.doi.org/10.21236/ada275591.

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ACOUSTICAL SOCIETY OF AMERICA NEW YORK. U.S. TAG for ISO/TC108 Mechanical Vibration and Shock (Minutes of the Accredited Standards Committee on Mechanical Shock and Vibration, S2). Fort Belvoir, VA: Defense Technical Information Center, May 1991. http://dx.doi.org/10.21236/ada239536.

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Ross, Steven B., Ralph E. Best, Nicholas A. Klymyshyn, Philip J. Jensen, and Steven J. Maheras. Used fuel rail shock and vibration testing options analysis. Office of Scientific and Technical Information (OSTI), September 2014. http://dx.doi.org/10.2172/1169380.

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Gordaninejad, Fararmarz. A Novel Magneto-Rheological Shock Absorber for Vibration Control. Fort Belvoir, VA: Defense Technical Information Center, February 2001. http://dx.doi.org/10.21236/ada392621.

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Nagle-Eshleman, J. The Shock and Vibration Digest. Volume 17, Number 1. Fort Belvoir, VA: Defense Technical Information Center, January 1985. http://dx.doi.org/10.21236/ada151051.

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Nagle-Eshleman, J. The Shock and Vibration Digest. Volume 17, Number 2. Fort Belvoir, VA: Defense Technical Information Center, February 1985. http://dx.doi.org/10.21236/ada153129.

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