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damping ratio
相关语句
  阻尼比
    Vibration acceleration method is employed to measure the vibration frequency, damping ratio, shape of amplitude, acceleration, velocity and displacement at different point of the pipe bridge structures, and parameters relating to vibration displacement and tension of staying cables of the pipe bridge in different conditions of bridge cleaning.
    采用测管桥结构各测点振动加速度方法实现管桥振动频率、阻尼比、振型、管桥振动加速度、速度、位移、管桥在不同清管条件下的振动位移、管桥斜拉索张力相关参数的测试;
短句来源
    However, the LT-TMD needs higher optimum tuning frequency ratio and lesser optimum damping ratio with reference to the TMD.
    然而,LT-TMD比传统的TMD具有更大的最优调谐频率比和更小的最优阻尼比.
短句来源
    Structural boundary status can be judged by the structure damping ratio change.
    通过实测桥梁结构阻尼比的变化,可以对结构边界条件、结构材料阻尼特性的改变进行分析判断。
短句来源
    Firstly,the influences of the velocity,damping ratio and tire pressure on the response of pavement are analyzed by using ABAQUS explicit code;
    通过有限元Explicit计算模块,首先分析了行车速度、材料阻尼比与轮胎压力对路面结构动响应的影响;
短句来源
    The Identification Method of Damping Ratio of Closely-space MDOF System Using Analytic Wavelet
    用解析小波辨识多自由度密集模态系统的阻尼比
短句来源
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  阻尼率
    Experiments demonstrate that it is practical to detect the foundation compactedness in real time by measuring the change of the damping ratio of the soil.
    通过实验论证了利用振动系统的阻尼率变化作为实时在线检测地基密实度的判据是可行的
短句来源
  “damping ratio”译为未确定词的双语例句
    ③ Frequency ratio of TMD to bridge and damping ratio of TMD have both effects on the control effectiveness,and the effect of the former is greater than that of the latter.
    TMD的频率及阻尼设置对控制效果均有影响,前者大于后者.
短句来源
    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
    Secondly, it analyzes the parameters of Bu-Liu River Bridge’s coupling vibration of vehicle-bridge, which include some influencing factors such as vehicle speed、vehicle quality、its type and damping ratio、bridge’s damping ratio and so on.
    然后进行布柳河大桥车桥耦合振动的参数分析,它包括有车速、车体质量、车辆类型、车辆阻尼参数、桥梁阻尼比等因素的影响。
短句来源
    Stayed cable is very vulnerable to vibration as it is with low rigidity, low damping ratio and light weight.
    由于斜拉索刚度小、阻尼低、质量轻,极易发生振动。
短句来源
    The structural modal damping ratio is calculated using the modal strain energy method in conjunction with the finite element method. The dynamic response of vehicle bridge system with and without viscoelastic damper is performed by computer. The simulating results preliminary show: It is effective that using the suggested method to reduce the short or middle span steel bridge displacement out of limited causing by velocity increasing.
    研究用粘弹性阻尼器抑制铁路钢桥在列车通过时车—桥共振的方法,编制了用应变能法计算加入粘弹性阻尼器后附加模态阻尼比及列车与桥梁动力相互作用的计算机程序,利用仿真计算可模拟加入粘弹性阻尼器前后列车通过时钢梁的振动情况.仿真计算初步表明用粘弹性阻尼器抑制由于列车提速使中小跨度钢梁振动过大是有效的
短句来源
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  damping ratio
The damping will be defined by the shear damping ratio for the soil D, analogous to the critical viscous damping ratio for a single degree of freedom c/c0.
      
Thus, only two tests would be necessary in order to obtain both the maximum damping ratio, introduced by the piezo device, and the natural frequency of the whole system.
      
Therefore, several tests (experimental or numerical) ought to be carried out in order to determine the resistor which provides the maximum damping ratio for a mode of interest, and in turn the natural frequency of the whole structure.
      
A damping ratio of less than 0.05 percent of critical damping is proved to be valid for the aluminum panel.
      
The modal damping ratio is improved from below 0.2 percent to above 4 percent.
      
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This report presents the procedure and main results of in situ vibration test on Xinfengjiang Dam. The first ten natural frequencies, damping ratios and mode shapes of the dam were measured through steady forced vibration test using multiple vibrators. It was shown from the test that deformation of the dam was in linear elastic state and the dam under forced vibration might be considered as a monolithic body; the first ten frequencies ranged from 5.5 to 16.0 c/s; and the average damping ratio of...

This report presents the procedure and main results of in situ vibration test on Xinfengjiang Dam. The first ten natural frequencies, damping ratios and mode shapes of the dam were measured through steady forced vibration test using multiple vibrators. It was shown from the test that deformation of the dam was in linear elastic state and the dam under forced vibration might be considered as a monolithic body; the first ten frequencies ranged from 5.5 to 16.0 c/s; and the average damping ratio of the dam was about 0.05. Moreover, the effects of various exciting points were compared in this report also.

本文叙述新丰江坝原型振动试验的方法和主要结果。用多台起振机进行稳态强迫振动试验,测定了该坝前十阶自振频率、阻尼和振型。文中还对不同激振位置的效果进行了比较,对坝体变形特性进行了探讨。

The main teaching building of Northeast Forestry University was built in 1956 and came into use. By our observation, so far,the building is working well. The main building has been bnilt for 30 years, nevertheless, its dynamic property parameters——natural frequency,normal modes,damping are unknown yet.We carried out a study on its dynamic property parameter with a surrounding random excitation;here, its (1st)natural frequency,(1st) normal modes and damping ratio are given in this paper. We find its account...

The main teaching building of Northeast Forestry University was built in 1956 and came into use. By our observation, so far,the building is working well. The main building has been bnilt for 30 years, nevertheless, its dynamic property parameters——natural frequency,normal modes,damping are unknown yet.We carried out a study on its dynamic property parameter with a surrounding random excitation;here, its (1st)natural frequency,(1st) normal modes and damping ratio are given in this paper. We find its account as a reference in the maintenance and use of the main building preventing it from the seisin damage and its life-span estimation.

东北林业大学教学主楼于1956年建成使用。经观察,到目前为止,教学楼工作状态良好。但是,自主楼建成至今已有三十年,它的动力特性参数——固有频率、振型、阻尼等参数还不知道。 本文通过环境随机激振,对教学主楼的动力特性参数进行了研究,给出了主楼南北弯曲振动的一阶固有频率、一阶主振型及阻尼比,这对于主楼的使用维修,防止地震危害以及估计主楼的寿命将具有参考价值。

A method, which uses the damping ratios and frequency of freedecaying oscillations as basic information to identify the flutter derivatives of a two dimensional bridge deck, is proposed. In this method, noncoupled flutter derivatives are identified by the Scanlan's method, while the coupled ones are determined by solving a system of nonlinear equations and using the parameters of the predominant modes for a given reduced wind speed. Compared with Scanlan's method in current use, the proposed method not...

A method, which uses the damping ratios and frequency of freedecaying oscillations as basic information to identify the flutter derivatives of a two dimensional bridge deck, is proposed. In this method, noncoupled flutter derivatives are identified by the Scanlan's method, while the coupled ones are determined by solving a system of nonlinear equations and using the parameters of the predominant modes for a given reduced wind speed. Compared with Scanlan's method in current use, the proposed method not only reduces the technical requirements to the wind tunnel tests, but also increases the accuracy of the identification.

本文提出了一种以节段模型受到初始脉冲激励后的自由振动的阻尼和频率作为基本参数,在时域内识别二元非流线型体颤振导数的方法。在这一方法中,非耦合导数的确定与常规的方法没有根本的不同,而耦合导数是在指定的折算风速下根据各主振方向上的模型参数以及相应的非耦合导数通过求解非线性代数方程组得到。与目前常用的Scanlan方法相比,略去了实验必需的纯单一模态振动的要求,从根本上减少了对风洞实验技术的要求和工作量,而且识别精度有明显的提高。

 
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