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
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.
96
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
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
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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