Robustness Evaluation of Negative Stiffness Damper for Cable Vibration Mitigation Based on Interval Model with Experimental Validation

IF 4.6 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Xiang Shi, Xiaolin Wei, Jin-Yang Li, Heming Xing, Qinlin Cai
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引用次数: 0

Abstract

The negative stiffness damper (NSD) has emerged as a promising passive vibration control device for cable structures due to its simplicity and effectiveness. However, uncertainties stemming from both internal and external environmental factors can potentially compromise the NSD’s performance in real-world applications, posing risks to cable safety. In response, this paper conducts a robustness evaluation on an integrated cable-NSD system, taking into account various potential uncertainties. Specifically, the uncertain parameters are described by interval variables. Consequently, an interval model is constructed to delineate the boundaries of cable dynamic responses when subjected to these uncertainties. The model’s accuracy is validated against experimental results. Subsequent simulations involve assessing interval responses for both single- and multimode cable vibrations under varying uncertainties. Finally, the NSD’s robustness concerning cable vibration control is evaluated using the model, which incorporates the first-passage theory. This analysis delves into the relationships among confidence levels, performance measures, and the variation range of uncertainties. The results indicate that for single-mode vibration control, there is a 90% confidence level that the damping ratio reduction remains within 10%. As for multimode vibration control, a 90% confidence level is established that the amplification falls within 17%.

Abstract Image

基于区间模型和实验验证的用于电缆减振的负刚度阻尼器鲁棒性评估
负刚度阻尼器(NSD)因其简单有效,已成为一种很有前途的电缆结构被动振动控制装置。然而,由内部和外部环境因素引起的不确定性可能会影响 NSD 在实际应用中的性能,从而给电缆安全带来风险。为此,本文考虑到各种潜在的不确定性,对集成电缆-NSD 系统进行了鲁棒性评估。具体来说,不确定参数由区间变量描述。因此,本文构建了一个区间模型,以划定电缆在受到这些不确定性影响时的动态响应边界。该模型的准确性根据实验结果进行了验证。随后的模拟包括评估不同不确定性下单模和多模电缆振动的区间响应。最后,使用包含第一通道理论的模型对 NSD 在电缆振动控制方面的稳健性进行评估。该分析深入探讨了置信度、性能指标和不确定性变化范围之间的关系。结果表明,对于单模振动控制,有 90% 的置信度可以确保阻尼比的减小保持在 10% 以内。至于多模式振动控制,90% 的置信度为放大率在 17% 以内。
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来源期刊
Structural Control & Health Monitoring
Structural Control & Health Monitoring 工程技术-工程:土木
CiteScore
9.50
自引率
13.00%
发文量
234
审稿时长
8 months
期刊介绍: The Journal Structural Control and Health Monitoring encompasses all theoretical and technological aspects of structural control, structural health monitoring theory and smart materials and structures. The journal focuses on aerospace, civil, infrastructure and mechanical engineering applications. Original contributions based on analytical, computational and experimental methods are solicited in three main areas: monitoring, control, and smart materials and structures, covering subjects such as system identification, health monitoring, health diagnostics, multi-functional materials, signal processing, sensor technology, passive, active and semi active control schemes and implementations, shape memory alloys, piezoelectrics and mechatronics. Also of interest are actuator design, dynamic systems, dynamic stability, artificial intelligence tools, data acquisition, wireless communications, measurements, MEMS/NEMS sensors for local damage detection, optical fibre sensors for health monitoring, remote control of monitoring systems, sensor-logger combinations for mobile applications, corrosion sensors, scour indicators and experimental techniques.
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