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equivalent modal damping
相关语句
  等效阻尼比
     EQUIVALENT MODAL DAMPING RATIOS OF VIBRATION IN COMPOSITE STRUCTURES
     组合结构振动的等效阻尼比
短句来源
  等效模态阻尼
     ESTIMATION METHODS OF EQUIVALENT MODAL DAMPING RATIO OF TALL BUILDINGS WITH SOIL-STRUCTURE INTERACTION
     考虑土壤影响时高层建筑等效模态阻尼比的计算方法
短句来源
  “equivalent modal damping”译为未确定词的双语例句
     A universal estimation approach has been configured to depict the relationship among the equivalent modal damping ratio, RMS cable deflection, the optimal parameter of MR dampers (marker, mounting position and voltage applied), the first frequency of cables (tensile force, length and mass per unit length), Irvine parameter, excited loads (type, frequency and amount).
     浙江大学博l了学位论文磁流变阻尼器对斜拉索振动控制的研究考察了MR阻尼器型号、安装位置、斜拉索基频(张力、索长、质量)、激励荷载(类型、频率、大小)等各种因素对MR阻尼器半主动制振效果的影响。
短句来源
     The spectral design method based on the approximate decoupled modal analysis for the multifunctional vibration absorption of RC megaframe structure is studied in this paper. The formula of the equivalent modal damping ratio based on the modal strain energy is given.
     研究了钢筋混凝土巨型框架多功能减振结构的近似振型分解反应谱设计方法 ,给出了等效振型阻尼比的计算公式 ;
短句来源
     Equivalent modal damping ratios of the cable versus the different voltage applied to MR dampers are obtained.
     (3)装有 MR阻尼器的斜拉索自由振动试验。
短句来源
     The equivalent cable modal damping ratios attributed to MR dampers are measured, and the relationship between the equivalent modal damping ratios, the system frequency, the voltage imposed and displacement responses at the point of cable was pursued.
     据此来判断磁流变阻尼器在施加不同电压情况下对索前三阶模态振动的减振效果 ,并与油阻尼器的制振效果进行比较。
短句来源
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  equivalent modal damping
From the filtered decay signals of each mode, equivalent modal damping ratios were obtained as a function of rotational speed and strain amplitude.
      


In this paper, a simple and effective method is proposed for analyzing equivalent modal damping ratios of composite structures, this being initiated after the representation of complex frequencies including hysterestic damping coefficients are obtained, in the case of hysterestic damping. In this method, arbitrary equivalent modal ratios may be obtained for all kinds of composite structures provided that all calculations are in the domain of real numbers and familiar method of eigenvalue...

In this paper, a simple and effective method is proposed for analyzing equivalent modal damping ratios of composite structures, this being initiated after the representation of complex frequencies including hysterestic damping coefficients are obtained, in the case of hysterestic damping. In this method, arbitrary equivalent modal ratios may be obtained for all kinds of composite structures provided that all calculations are in the domain of real numbers and familiar method of eigenvalue or related software are adopted. In the paper, numerical examples are given for the calculation of a composite cantilever bar and a composite tube-in-tube tall building.

本文采用滞后阻尼的假定,在获得组合结构含有滞后阻尼系数的复频率方程后,进而导出了一种分析组合结构体系等效阻尼比的方法,运用该方法,只要在实数范围内,采用通常的特征值方法或所选用的软件,便可获得各种组合结构任一阶等效阻尼比,简单且实用。本文最后给出了一个组合悬臂结构和组合高层建筑筒体结构的实例。

The multifunctional vibration absorption of RC megaframe structure consists of the major frame,the minor frames and the control devices;therefore it is a non classical damping system.The spectral design method based on the approximate decoupled modal analysis for the multifunctional vibration absorption of RC megaframe structure is studied in this paper.The formula of the equivalent modal damping ratio based on the modal strain energy is given.The precision of the approximate decoupled modal...

The multifunctional vibration absorption of RC megaframe structure consists of the major frame,the minor frames and the control devices;therefore it is a non classical damping system.The spectral design method based on the approximate decoupled modal analysis for the multifunctional vibration absorption of RC megaframe structure is studied in this paper.The formula of the equivalent modal damping ratio based on the modal strain energy is given.The precision of the approximate decoupled modal analysis is investigated.The calculating procedure of the spectral design method is also presented.

钢筋混凝土巨型框架多功能减振结构是由主框架、次框架和减振装置组成的 ,是一种新型的非经典阻尼减振结构系统。研究了钢筋混凝土巨型框架多功能减振结构的近似振型分解反应谱设计方法 ,给出了等效振型阻尼比的计算公式 ;通过算例分析 ,研究了近似振型分解法的计算精度 ;提出了巨型框架多功能减振结构基于规范的近似振型分解反应谱设计方法的计算步骤

A full scale test of a stay cable incorporated with Magneto rheological (MR) dampers is performed on the Dongting Lake Bridge which is the first three pylon cable stayed bridge in China. The test consists of three parts: design of the experimental devices, field tests of the cable without and with dampers. Equivalent modal damping ratios of the cable versus the different voltage applied to MR dampers are obtained. Results of field tests show that the optimal damping ratios of cable with MR dampers...

A full scale test of a stay cable incorporated with Magneto rheological (MR) dampers is performed on the Dongting Lake Bridge which is the first three pylon cable stayed bridge in China. The test consists of three parts: design of the experimental devices, field tests of the cable without and with dampers. Equivalent modal damping ratios of the cable versus the different voltage applied to MR dampers are obtained. Results of field tests show that the optimal damping ratios of cable with MR dampers under the voltage increase 4 to 7 times as compared with those without MR dampers, and provide some scientific basis for the effective vibration mitigation of the cables.

采用磁流变 (MR)阻尼器对我国第一座三塔斜拉桥——湖南岳阳洞庭湖大桥斜拉索的减振问题进行了试验研究。内容包括 :(1)设计试验装置 ;(2 )不装阻尼器的斜拉索自由振动试验 ;(3)装有 MR阻尼器的斜拉索自由振动试验。试验结果表明 ,安装 MR阻尼器可显著提高斜拉索的模态阻尼比。通过模态阻尼比随 MR阻尼器外加电压变化的关系 ,可得出拉索等效模态阻尼比的优化值 ,为实现拉索的有效减振提供了科学依据

 
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