一种新型调谐质量率不相关结构阻尼器的优化设计

IF 1.9 3区 工程技术 Q3 MECHANICS
Junqi Jiang, Shun Weng, Hao Luo, Hongping Zhu
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引用次数: 0

摘要

在本研究中,提出了一种新型的非传统调谐质量阻尼器(TMD),称为调谐质量率无关阻尼器(TMRD),用于结构振动抑制。所提出的TMRD由一个弹簧单元、一个质量单元和一个速率无关线性阻尼(RILD)单元组成,该单元产生与激励频率无关的阻尼力。基于不动点理论,导出了TMRD特性参数优化设计的解析公式。当TMRD和tmd分别用于受谐波和地震地震动影响的柔性结构时,证明了TMRD在抑制结构振动和阻尼器行程方面的优势。在实际应用中,提出了一种被动实现TMRD的近似方法。结果表明,该方法可用于物理实现TMRD,并提供比传统TMD更好的解决方案,以抑制结构振动和阻尼器行程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimal design of a novel tuned mass rate-independent damper for structural vibration suppression

In the present study, a novel type of nontraditional tuned mass damper (TMD), termed as a tuned mass rate-independent damper (TMRD), was proposed for structural vibration suppression. The proposed TMRD consisted of a spring element, a mass element, and a rate-independent linear damping (RILD) element, which generated damping forces independent of the excitation frequencies. Based on the fixed-point theory, analytical formula of optimally designing the characteristic parameters of the TMRD were derived. The advantages of the TMRD over TMDs in suppressing the structural vibration and damper stroke were demonstrated, when they were separately used in flexible structures subjected to harmonic and earthquake-induced ground motions. For practical applications, an approximate method was presented to passively realize the proposed TMRD. It was suggested that the proposed method can be used to physically realize the TMRD and provide a superior solution than the conventional TMD to suppressing the structural vibration and damper stroke.

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来源期刊
Meccanica
Meccanica 物理-力学
CiteScore
4.70
自引率
3.70%
发文量
151
审稿时长
7 months
期刊介绍: Meccanica focuses on the methodological framework shared by mechanical scientists when addressing theoretical or applied problems. Original papers address various aspects of mechanical and mathematical modeling, of solution, as well as of analysis of system behavior. The journal explores fundamental and applications issues in established areas of mechanics research as well as in emerging fields; contemporary research on general mechanics, solid and structural mechanics, fluid mechanics, and mechanics of machines; interdisciplinary fields between mechanics and other mathematical and engineering sciences; interaction of mechanics with dynamical systems, advanced materials, control and computation; electromechanics; biomechanics. Articles include full length papers; topical overviews; brief notes; discussions and comments on published papers; book reviews; and an international calendar of conferences. Meccanica, the official journal of the Italian Association of Theoretical and Applied Mechanics, was established in 1966.
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