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首页> 外文期刊>Shock and vibration >An Aerodynamic Load Correction Method for HFFB Technique Based on Signal Decoupling and an Intelligent Optimization Algorithm
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An Aerodynamic Load Correction Method for HFFB Technique Based on Signal Decoupling and an Intelligent Optimization Algorithm

机译:基于信号解耦和智能优化算法的HFFB技术气动载荷校正方法

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摘要

In high-frequency force balance (HFFB) wind tunnel tests, the aerodynamic wind loads at the base of the buildingmodel are usually amplified by the model-balance system. This paper proposes a new method for eliminating such an amplification effect. Firstly, the measured base bending moment signals are decoupled into independent components. Then, an optimization model is established to represent the problem of identifying the natural frequencies and damping ratios for the different modes of the model-balance system. Finally, the genetic algorithm (GA) is employed to seek the solution to the optimization problem, and the base bending moment is corrected through the identified dynamic parameters of the model-balance system. Compared to the conventionally used knocking method, the proposed method requires no extra knocking tests and can take the aerodynamic damping of the model-balance system into account. An engineering case, the Guangzhou East Tower (GZET), is taken as an example to show the effectiveness of the method.
机译:在高频力平衡(HFFB)风洞测试中,通常通过模型平衡系统来放大建筑模型基础上的气动风荷载。本文提出了一种消除这种放大效应的新方法。首先,将测得的基础弯矩信号解耦为独立的分量。然后,建立一个优化模型来代表识别模型平衡系统不同模式的固有频率和阻尼比的问题。最后,采用遗传算法(GA)寻求优化问题的解决方案,并通过所识别的模型平衡系统的动态参数来校正基本弯矩。与常规使用的爆震方法相比,该方法不需要额外的爆震测试,并且可以考虑模型平衡系统的空气动力学阻尼。以广州东塔(GZET)为例,说明了该方法的有效性。

著录项

  • 来源
    《Shock and vibration》 |2018年第5期|2128519.1-2128519.12|共12页
  • 作者单位

    Guangzhou Univ, Guangzhou Univ Tamkang Univ Joint Res Ctr Engn St, Guangzhou, Guangdong, Peoples R China;

    South China Univ Technol, State Key Lab Subtrop Bldg Sci, Guangzhou, Guangdong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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