Relevant bibliographies by topics / Shock absorber (damper)

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Academic literature on the topic 'Shock absorber (damper)'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Shock absorber (damper)"

1

Liu, Xiao Chuan, Shi Xing Zhu, and Yong Gang Yang. "Design and Drop Test of Aircraft Landing Gear’s Shock Absorber Based on Magnetorheological Damper." Applied Mechanics and Materials 665 (October 2014): 601–6. http://dx.doi.org/10.4028/www.scientific.net/amm.665.601.

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The structure of a shock absorber based on magnetorheological (MR) damper with a metering pin is proposed, and structure of the magnetic circuit of MR damper is optimized. By drop tests, the damping characteristics of the shock absorber and damping effect are tested. The experimental results show that the shock absorber has the characteristic of a wide damping force adjustment range and lower energy dissipation. The maximum vertical load and shock absorber piston displacement can be changed at same drop height by changing the current. It has also been proved that shock absorber based on MR damper is better than conventional oleo-pneumatic shock absorber on adjustment of damping force.
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2

Faraj, Rami, Cezary Graczykowski, and Jan Holnicki-Szulc. "Adaptable pneumatic shock absorber." Journal of Vibration and Control 25, no. 3 (2018): 711–21. http://dx.doi.org/10.1177/1077546318795532.

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Recent progress in the field of sensors, actuators, and smart materials allows the construction of more and more efficient controllable pneumatic dampers for shock absorption. Typically, such devices apply online semi-active control techniques, which utilize electromagnetic, piezoelectric, or magnetostrictive valves. As a result, they are characterized by a high efficiency of impact absorption, but simultaneously by a complicated construction and a specialized electronic system. The alternative solutions are semi-passive absorbers that ensure a similar performance by using a much simpler, low-cost construction and a less complicated adaptation mechanism. This paper introduces an adaptable semi-passive single-chamber pneumatic shock absorber, SOFT-DROP, which provides the optimal impact absorption and energy dissipation after a single reconfiguration performed at the beginning of the process. The high effectiveness of the proposed concept is proved in numerical and experimental investigations of the device. Moreover, the proposed semi-passive damper is also compared against already known pneumatic absorbers that utilize semi-active control methods. Ultimately, the device might be used in an airdrop system for delivery of light packages.
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3

Sikora, Marian. "Modeling and Operational Analysis of an Automotive Shock Absorber with a Tuned Mass Damper." Acta Mechanica et Automatica 12, no. 3 (2018): 243–51. http://dx.doi.org/10.2478/ama-2018-0038.

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Abstract Recently, the topic of energy dissipation efficiency of vehicle suspension dampers has become a research and engineering problem due to structural requirements of vehicle manufacturers and the introduction of electric/hybrid cars. By principle, any disturbances in the damping force generation process translate into pressure fluctuations to be then transferred to the body of the vehicle. The effect known as rattling within the damper engineering community is perceived as detrimental to ride comfort. To improve the performance of a vehicle damper several methods can be devised and used. One approach is to optimize the settings of the valves in the damper. The approach, however, often influences the force output of the damper. Another technique involves the application of add-on systems. One such system is the tuned mass damper concept originally developed by Frahm for structural engineering applications. In the paper the author proposes a damper concept equipped with an external/internal tuned mass damper component for improving the dynamic characteristics of vehicle dampers. The author presents modeling details followed by simulations of the damper with the tuned mass damper concept subjected to oscillatory inputs, and a critical analysis of the presented results.
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4

Luo, Feng, and Xiao Li Zhang. "A Review of Aeration and Cavitation Phenomena in the Hydraulic Shock Absorber." Applied Mechanics and Materials 536-537 (April 2014): 1369–73. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.1369.

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This paper aims to bring an organized overview of the damper malfunction due to the cavitation and aeration phenomena, which are normal problems for all kinds of hydraulic dampers. The object of this report is to describe, detect and simulate these damper failures.
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5

Rahman, M. A., U. Ahmed, and M. S. Uddin. "Response of Non-Linear Shock Absorbers-Boundary Value Problem Analysis." International Journal of Applied Mechanics and Engineering 18, no. 3 (2013): 793–814. http://dx.doi.org/10.2478/ijame-2013-0048.

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Abstract A nonlinear boundary value problem of two degrees-of-freedom (DOF) untuned vibration damper systems using nonlinear springs and dampers has been numerically studied. As far as untuned damper is concerned, sixteen different combinations of linear and nonlinear springs and dampers have been comprehensively analyzed taking into account transient terms. For different cases, a comparative study is made for response versus time for different spring and damper types at three important frequency ratios: one at r = 1, one at r > 1 and one at r <1. The response of the system is changed because of the spring and damper nonlinearities; the change is different for different cases. Accordingly, an initially stable absorber may become unstable with time and vice versa. The analysis also shows that higher nonlinearity terms make the system more unstable. Numerical simulation includes transient vibrations. Although problems are much more complicated compared to those for a tuned absorber, a comparison of the results generated by the present numerical scheme with the exact one shows quite a reasonable agreement
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6

Yip, Chun-Chieh, Jing-Ying Wong, Su-Shen Lim, and Jie-Sheng Ooi. "Pseudo dynamic loads energy dissipation in mechanical shock absorber seismic damper." E3S Web of Conferences 347 (2022): 03012. http://dx.doi.org/10.1051/e3sconf/202234703012.

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Earthquake tremor from neighbouring country had caused several cases of structural and non-structural damages toward the buildings in Malaysia. This issue had raised public attention about the safeness of the low-rise, mid-rise and high-rise building in the country. Buildings without proper seismic resistance design will collapse during the earth earthquake and people who could not evacuated from the building will be buried alive. Viscous Damper is one of the passive structural control systems in attenuating the seismic response on building. The damper utilized principle of fluid flow through orifices to create friction that turns the movement into heat energy to be release into atmosphere. This study is to investigate the effectiveness and behaviour of the mechanical shock absorber as damper in resisting seismic force. Three different type of dampers are being tested under 6 different loading displacement amplitude to measure the hysteresis loops and energy dissipation capability. The results showed that the extra features of the coil over in EX5 Kriss Wave damper with 17 kNmm had significantly increase the energy dissipation capability up to 5.6 time better than the lowest 3 kNmm APIDO type damper.
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7

Abdo, Tamer M., Ahmed A. Huzayyin, Ahmed A. Abdallah, and Amr A. Adly. "Characteristics and Analysis of an Eddy Current Shock Absorber Damper Using Finite Element Analysis." Actuators 8, no. 4 (2019): 77. http://dx.doi.org/10.3390/act8040077.

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In the paper a model is developed for a proposed eddy current damper using finite element analysis. Several damper configurations are studied and its characteristics are analyzed. The steady state performance for the configurations is compared to reach a design with an acceptable performance for the eddy current damper. Furthermore, the proposed designs performance are compared with the traditional damper performance. It was found that the best two designs to achieve the targeted performance were to have an iron core damper or an iron core with an aluminum sleeve. Those two designs are economical and simple while achieving acceptable performance when compared to traditional dampers and other electromagnetic damping systems.
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8

Wszołek, Grzegorz, Piotr Czop, Dawid Jakubowski, and Damian Slawik. "Optimization of a Shock Absorber Design Using Model-Based Approach." Advanced Materials Research 452-453 (January 2012): 1351–55. http://dx.doi.org/10.4028/www.scientific.net/amr.452-453.1351.

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The aim of this paper is to demonstrate a possibility to optimize a shock absorber design to minimize level of vibrations with the use of model-based approach. The paper introduces a proposal of an optimization method that allows to choose the optimal values of the design parameters using a shock absorber model to minimize the level of vibrations. A model-based approach is considered to obtain the optimal pressure-flow characteristic by simulations conducted with the use of coupled models, including the damper and the servo-hydraulic tester model. The presence of the tester model is required due to high non-linear coupling of the tested object (damper) and the tester itself to be used for noise evaluation. This kind of evaluation is used in the automotive industry to investigate dampers, as an alternative to vehicle-level tests. The paper provides numerical experimental case studies to show application scope of the proposed method
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9

Guntur, Harus Laksana, and Wiwiek Hendrowati. "A Comparative Study of the Damping Force and Energy Absorbtion Capacity of Regenerative and Conventional-Viscous Shock Absorber of Vehicle Suspension." Applied Mechanics and Materials 758 (April 2015): 45–50. http://dx.doi.org/10.4028/www.scientific.net/amm.758.45.

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This paper presents a comparative study of the damping force and energy absorbtion capacity of a typical conventional-viscous and a regenerative shock absorber for vehicle suspension. Regenerative shock absorber (RSA) is a shock absorber which can regenerate the dissipated vibration energy from vehicle suspension into electricity. In this research, a prototype of regenerative shock absorber was developed, its damping force and energy absorbtion capacity were tested, and the results were analized and compared with those of a typical conventional-viscous shock absorber. The regenerative and viscous shock absorber were compressed and extended in various excitation frequency using damping force testing equipment to obtain force-velocity and the force-displacement curves. The force-velocity and force-displacement curves indicate the damping force and energy absorbtion capacity of the shock absorber. The results show that the damping force of the typical-viscous shock absorber closed to linear at all exciation frequencies. For regenerative shock absorber, nonlinearity and large hysteresis area of the damping force occur at all excitation frequencies. Further, the energy absorbtion capacity of the typical-viscous shock absorber shows an elliptical area with the compression part bigger than the extension one, while those of the regenerative shock absorber shows an asymmetric square area, which indicates a smaller energy absorbtion capacity. These phenomena indicate the significant effect of implementing dry friction damper and elctrical damper to the characteristics of regenerative shock absorber.
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10

Audenino, A. L., and G. Belingardi. "Modelling the Dynamic Behaviour of A Motorcycle Damper." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 209, no. 4 (1995): 249–62. http://dx.doi.org/10.1243/pime_proc_1995_209_212_02.

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Within the context of vehicle suspension component characterization, that of shock absorbers is one of the more difficult to achieve, yet it is a very critical factor in the prediction of vehicle dynamic behaviour. Strongly non-linear output force functions are always linked to a frequency-dependent behaviour. Using the internal fluid-dynamic phenomenon with respect to a motorcycle shock absorber, different physical models of increasing complexity are presented: using these models it is possible to evaluate the importance of different factors, for example oil compressibility or oil inertia. Comparisons with experimental data confirm the validity of these models
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