Test Verification of a Design Method for a Fluid Viscous Damper

Jia, Jiu Hong; Hua, Hong Xing

doi:10.4028/www.scientific.net/AMR.291-294.2085

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HomeAdvanced Materials ResearchMaterials Processing Technology, AEMT2011Test Verification of a Design Method for a Fluid...

Test Verification of a Design Method for a Fluid Viscous Damper

Abstract:

Vibration protection of pipes in nuclear power plants is a critical factor for the safety of the whole plant. In order to improve the anti-shock ability of pipes in nuclear power plants, the application feasibility of the fluid viscous damper in the plant piping protection is investigated. Then a damper design model intended to be used in nuclear power plants is researched by shock tests. Moreover, the parameters in the mathematical model are analyzed. From the analysis results, the conclusion can be drawn that the design method can be used to calculate the physical dimensions of dampers.

Info:

Periodical:

Advanced Materials Research (Volumes 291-294)

Main Theme:

Materials Processing Technology, AEMT2011

Edited by:

Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu

Pages:

2085-2088

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.291-294.2085

Citation:

J. H. Jia and H. X. Hua, "Test Verification of a Design Method for a Fluid Viscous Damper", Advanced Materials Research, Vols. 291-294, pp. 2085-2088, 2011

Online since:

July 2011

Authors:

Jiu Hong Jia, Hong Xing Hua

Keywords:

Damping Coefficient, Fluid Viscous Dampers, Nonlinear Viscous Damping, Nuclear Power Plant (NPP), Vibration Protection

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Price:

$38.00

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References

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[9] K.G. Rakesh: Earthquake Engineering and Structural Dynamics. 2005, 34: 825–846.

Paper TitlePages

Test Verification of a New Type Damper for Piping System

Authors: Jiu Hong Jia, Han Wei Wu, Hong Xing Hua

Abstract: A new type viscous damper designed especially for the anti-impact requirements of piping systems on ship is studied．In order to analyze the operating characteristic of the damper in practical application，two experiments about the new type damper was carried out. One is on the drop test machine; the other is on a real ship. The results of the drop tests showed that the shock load was smoothly and gently brought to rest and decelerated with the lower possible force, which eliminates damaging force peaks and shock damage to machines and equipment. The real explosion experiment confirmed the good anti-impact ability of the new type damper．

1046

Study on the Effect of Supporting Stiffness on Energy Dissipation Efficiency of Viscous Dampers

Authors: Yun Xiang Lu, Yuan Qi Cai, Qing Fei Qu, Qian Hua Zhan

Abstract: Viscous dampers are widely used in vibration energy dissipation project. The researches on viscous dampers used in energy dissipation project at present are more, and one of the main research contents is about how to improve energy dissipation efficiency. In the current study, the effect of the supporting stiffness in dampers is neglected, and only its strength and stiffness is verified. Based on the research on the principle and mechanical model of viscous damper, the influence of supporting stiffness on various energy dissipation working parameters has been analyzed in this paper. The results showed that, supporting stiffness has great influence on the energy dissipation efficiency, then with energy dissipation efficiency as the index, this paper derived the generality support stiffness design formula for energy consumption optimizing, which provide scientific basis for similar design.

High Efficient Viscoelastic Damper for Heavy Trucks

Authors: Sai Fei Zhang, Xiao Ling Liu, Yong Liu

Abstract: In this paper, a new viscoelastic damper design for heavy trucks is presented and a calculation formula of viscous damping force considering the effect of Viscoelastic Fluids (VF) flow rate is carried out. By numerically simulating this equation, curves of the viscoelastic damper performance curve is obtained, and the results show that theoretical calculation result and the test results are well consistent, with the exception at the start point. Theoretical curves are more plumpness in compared with test curves.

318

Manufacture and Performance Test of New Type MR Damper

Authors: Song Jian Sun

Abstract: A new type of small proportion double rod structure magnetorheological(MR) damper was manufactured in this article, and the damper performance test was taken on electro-hydraulic servo system. The results indicate that the damper is not only able to provide a large damping force, but also its adjustable coefficient is high. And the hysteresis curve is still good in a high-frequency vibration, so it has a good stability.

2771

Analysis the Structural Parameters of Multi-Ring Groove MRF Damper Affecting on the Damping Properties

Authors: Jian Hai Xue, Shi Xing Zhu

Abstract: Design of a new magnetorheological damper gap structure, combined with viscous lag model, analyzed the damper structural parameters, Design the damping devices with different sizes. Comparison of the structure of the damper with different sizes after experiment, finding that the structure parameters has a significant effect on the performance of the damper. Designing a reasonable clearance structure is very important for improving the performance of MRF damper． The experimental results and the model fit have a good fitting accuracy.

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