使用叠加式单颗粒插入式阻尼器对结构系统进行振动控制的数值模拟和动态实验研究

IF 4.3 2区 工程技术 Q1 ENGINEERING, CIVIL Earthquake Engineering & Structural Dynamics Pub Date : 2024-07-04 DOI:10.1002/eqe.4191
Haoding Sun, Haoxiang He, Yang Cheng, Xiaojian Gao
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引用次数: 0

摘要

为克服传统颗粒阻尼器存在的颗粒半径大、振动条件苛刻、动能交换率低等不足,提出将齿轮齿条式阻尼器装置与叠加式单颗粒阻尼器(SSPD)有机结合,形成新型叠加式单颗粒阻尼器系统(SSPIS)。在详细分析各阶段颗粒受力状态的基础上,分析了 SSPIS 的减振机理,并建立了装有 SSPIS 的单自由度(SDOF)结构的力学模型。提供了 SSPIS 的数值模拟和分析过程,并提出了基于结构性能要求的感应器装置参数化设计方法。通过单层钢框架的振动台试验验证了 SSPIS 理论力学模型和数值模拟分析过程的准确性,并研究了 SSPIS 对受控结构的实际阻尼控制效果。试验和理论结果均表明,SSPIS 的数值模拟分析过程清晰准确,SSPIS-SDOF 结构系统的力学模型精确度高。与传统颗粒阻尼器相比,SSPIS 中的阻尼器装置能显著提高颗粒与结构之间的动量交换效率,且能按需自适应调节颗粒半径大小,阻尼频带高,能在多种场地地震作用下实现良好的阻尼控制效果,具有广阔的工程应用前景。
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Numerical simulation and dynamic experimental investigation on vibration control of a structural system with a stacked single particle-inerter damper

To overcome the deficiencies of large particle radius, strict vibration conditions, and low kinetic energy exchange rate of traditional particle dampers, it is proposed to organically combine the rack and pinion inerter device with a stacked single particle damper (SSPD) to form a novel stacked single particle-inerter damping system (SSPIS). Based on a detailed analysis of the force state of particles at various stages, the vibration damping mechanism of SSPIS is analyzed, and a mechanical model of a single-degree-of-freedom (SDOF) structure equipped with an SSPIS is established. The numerical simulation and analysis process of SSPIS is provided, and a parametric design method of inerter device based on the structural performance requirements is proposed. The accuracy of the theoretical mechanical model and numerical simulation analysis process of SSPIS is verified through shaking table tests of a single-story steel frame, and the actual damping control effect of SSPIS on the controlled structure is investigated. Both test and theoretical results show that the numerical simulation analysis process of SSPIS is clear and accurate, and the mechanical model of the SSPIS-SDOF structural system is highly accurate. The inerter device in SSPIS can significantly improve the momentum exchange efficiency between particles and structures, and SSPIS could adaptively adjust the particle radius size on demand compared with the traditional particle dampers, with a high damping frequency band, and can realize good damping control effect under the earthquake with various types of sites, which has expansive engineering application scenarios.

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来源期刊
Earthquake Engineering & Structural Dynamics
Earthquake Engineering & Structural Dynamics 工程技术-工程:地质
CiteScore
7.20
自引率
13.30%
发文量
180
审稿时长
4.8 months
期刊介绍: Earthquake Engineering and Structural Dynamics provides a forum for the publication of papers on several aspects of engineering related to earthquakes. The problems in this field, and their solutions, are international in character and require knowledge of several traditional disciplines; the Journal will reflect this. Papers that may be relevant but do not emphasize earthquake engineering and related structural dynamics are not suitable for the Journal. Relevant topics include the following: ground motions for analysis and design geotechnical earthquake engineering probabilistic and deterministic methods of dynamic analysis experimental behaviour of structures seismic protective systems system identification risk assessment seismic code requirements methods for earthquake-resistant design and retrofit of structures.
期刊最新文献
Issue information Issue information SSI-induced seismic earth pressures on an integral abutment bridge model: Experimental measurements versus numerical simulations and code provisions Estimation of inelastic displacement ratio spectrum for existing RC structures via displacement response spectrum Linear equivalence for motion amplification devices in earthquake engineering
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