Investigation of an Impact-buffered Viscous Damper: A new mechanical model, experiments, and numerical simulations

IF 4.3 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2024-11-17 DOI:10.1016/j.jsv.2024.118852

Yifei Zhang , Yong Ding , Guoshan Xu

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引用次数: 0

Abstract

This paper introduces a new mechanical model and presents experimental investigations for impact-buffered viscous dampers (IBVDs). A multi-degree-of-freedom bridge system is employed for numerical analysis, investigating the vibration control and impact characteristics of IBVDs. The experimental results closely align with theoretical predictions, with errors of 4.33 % for maximum positive force and 6.73 % for energy dissipation. When the displacement amplitude is greater than or equal to 6 mm, the equivalent viscous damping ratio of the IBVD decreases with the displacement amplitude. Numerical simulations show that IBVDs reduce the maximum acceleration of the girder and the maximum impact force by 20 % and 24 %, respectively. Compared to conventional viscous dampers, IBVDs demonstrate superior vibration control in terms of base shear and girder displacement. An appropriately designed IBVD can dissipate energy comparably to a conventional viscous damper during design-basis earthquakes while also providing enhanced cushioning against sudden collisions in more severe earthquakes.

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冲击缓冲粘滞阻尼器的研究：新机械模型、实验和数值模拟

本文介绍了一种新的机械模型，并对冲击缓冲粘性阻尼器（IBVDs）进行了实验研究。采用多自由度桥梁系统进行数值分析，研究了 IBVD 的振动控制和冲击特性。实验结果与理论预测非常吻合，最大正向力误差为 4.33%，能量耗散误差为 6.73%。当位移振幅大于或等于 6 毫米时，IBVD 的等效粘性阻尼比随位移振幅的增大而减小。数值模拟显示，IBVD 可将大梁的最大加速度和最大冲击力分别降低 20% 和 24%。与传统的粘性阻尼器相比，IBVD 在基底剪切力和大梁位移方面表现出卓越的振动控制能力。在设计基准地震中，设计合理的 IBVD 的消能效果可与传统的粘性阻尼器相媲美，同时还能在更严重的地震中提供更强的缓冲作用，防止突然发生的碰撞。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.