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damping ratio
相关语句
  阻尼比
    Investigation on High Precision Calculation for Damping Ratio Using ZOOMBDFT" Method
    “ZOOMBDFT”法高精度求系统阻尼比的探讨
短句来源
    DAMPING RATIO IDENTIFICATION METHOD BASED ON SIGNAL ENERGY ANALYSIS
    基于信号能量分析的结构阻尼比识别方法
短句来源
    Study on the effect of structure damping ratio on wind-induced dynamic response for long-span structural aeroelastic model
    结构阻尼比对大跨度结构气动弹性模型风振响应的影响研究
    The result shows that there is a lot of difference between the dynamic and the static properties, for example, the nonlinear relation between dynamic stress and strain, dynamic elasticity modulus and dynamic strength of the soil markedly reduce, but damping ratio increases.
    研究结果表明 ,滑带土在动荷载作用下的动力学性质与其静荷载作用下的力学性质有着较大的差异 ,主要表现在滑带土的动应力与动应变关系的非线性、滞后性及变形积累特点 ,动弹性模量与动强度的显著降低以及动阻尼比的显著增大特性。
短句来源
    The influence of systematic parameters on the structural equivalent damping ratio is analyzed for purely torsional vibration.
    对结构纯扭转的振动问题进行研究,分析了控制系统各参数对控制后结构等效阻尼比的影响。
短句来源
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  阻尼率
    ngineering-machinary seat system is described as an indenpent desgin element to obtain calculation method of optimal parameters (optimum damping ratio and optimum frequency ratio) for seat system excited by harmonic or white noise.
    将工程机械座椅系统看成一个独立的设计环节,从理论上提出了在正弦和白噪声激励下座椅最优减振参数(最优频率比和最佳阻尼率)的计算方法和计算公式。
短句来源
  “damping ratio”译为未确定词的双语例句
    The theoretical basis of design guidelines of truss structures with VED for damping control is expounded, which includes design formulas of a new kind of cylindrical VED with sandwiched structure, Absolute Value Model Strain Energy Method (AVMSE) for dynamic design of viscoelastic composite truss structures with VED and method for determining the optimal positions of VED and sensitivity of structureal modal damping ratio to stiffiness of the VED. A practical VED design for controlling modal damping of truss structures is given in details.
    论述桁架结构的阻尼控制设计理论基础,包括:一种新型的双夹层圆柱式VED结构设计公式,桁架结构中VED动力设计的绝对值模态应变能法(简记AVMSE),VED最佳位置选择方法和结构模态阻尼比对VED刚度的灵敏度分析,并给出利用这种VED控制桁架结构模态阻尼的具体设计。
短句来源
    Research is made on optimal parameters of structure_TMD system to control seismic response of structures,including the optimum location of TMD in the structure,the optimal frequency and damping ratio of TMD. TMD's effect on the untuned modes of the controlled structure is presented. Some approximate formulas for optimal parameters are derived.
    本文研究结构 -TMD(调谐质量阻尼器 )系统地震反应控制中参数的优化设计问题 ,包括TMD在结构上的最佳位置、最佳频率、最佳阻尼等参数值以及TMD对与其非调谐结构振型地震反应的作用进行了分析 ,导出了最优参数的近似计算式 ,为TMD在结构抗震方面的设计提供了理论依据
短句来源
    By regressing the vibration velocities and the scaled-distance, the formulations show that there exists an effective range that the pre-split weakens the seismic vibration in a large scale. In the range of scaled-distance 0.031~0.051 kg~(1/3)/m, the damping ratio will be in the range of 15%~30%.
    通过对试验中5个测点处不同测点间的振动强度与比例距离的数据回归分析,预裂缝的减震效果具有一个有效作用范围,在比例距离范围为0.031~0.051 kg1/3/m时,减震效果为15%~30%。
短句来源
    Analyzing the transfer function, it shows that the gain factor, natural frequency, damping ratio are key factors affecting the system performance.
    通过传递函数分析可知,决定系统的主要性能参数有增益、固有频率、阻尼比等。
短句来源
    To rationally choose the value of damping ratio ξ and to control various parameters which affect natural frequency can improve dynamic characteristic and increase work stability of the tractor unit.
    合理选择ζ的数值和控制影响ω_n的各项参数,改善系统的动态品质和提高机组的工作稳定性。
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 paper presents formulae of hydraulic system transfer functions on the basis of mathematical model of automatic draft control systems that have been used on tractor. Factors that affect velocity v(t) and displacement y(t) of piston rod are analysed in terms of control theory. Disturbance functions that affect velocity v( t ) and displacement y( t ) are different in various types and working conditions The dynamic characteristics of hydraulic linkage system is studied with response as a function of time....

This paper presents formulae of hydraulic system transfer functions on the basis of mathematical model of automatic draft control systems that have been used on tractor. Factors that affect velocity v(t) and displacement y(t) of piston rod are analysed in terms of control theory. Disturbance functions that affect velocity v( t ) and displacement y( t ) are different in various types and working conditions The dynamic characteristics of hydraulic linkage system is studied with response as a function of time. Damping ratio ξ and natural frequency ωn have effects on transition process. To rationally choose the value of damping ratio ξ and to control various parameters which affect natural frequency can improve dynamic characteristic and increase work stability of the tractor unit.

本文在建立阻力调节液压 悬挂系统数学模型的基础上,列出系统传递函数的各种表达式,对影响油缸活塞杆输出速度v(t)和位移y(t)的诸因素进行理论分析,阐明在不同机型和工况条件下,影响v(t)和y(t)的扰动作用各不相同。文中采用时域法研究系统的动态特性,指出阻尼系数ζ和固有频率ω_n对系统动态过渡过程的影响。合理选择ζ的数值和控制影响ω_n的各项参数,改善系统的动态品质和提高机组的工作稳定性。

In this paper, the principle of the Ibrahim Time Domain Algorithm (ITDA), developed in recent years and used for identification of vibration modal parameters and its implement are discussed. As an example, the free response of the ship 《Zhen-Zhou》, a 25,000 DWT bulk carrier, caused by whipping and recorded in terms of its strains in a light-recorder, have been dealt with. The first two natural frequencies and modal damping ratios have been identified and compared with the results obtained from the traditional...

In this paper, the principle of the Ibrahim Time Domain Algorithm (ITDA), developed in recent years and used for identification of vibration modal parameters and its implement are discussed. As an example, the free response of the ship 《Zhen-Zhou》, a 25,000 DWT bulk carrier, caused by whipping and recorded in terms of its strains in a light-recorder, have been dealt with. The first two natural frequencies and modal damping ratios have been identified and compared with the results obtained from the traditional method. It shows that the future of using this technology in the identification of ship mode parameters is promising and the problems which need to be solved are also indicated.

振动模态参数识别的Ibrahim法是近年来振动参数时域分析法的一种新发展。本文简要阐述了方法的原理和讨论了方法的实施,并以两万五千吨货轮“郑州号”在遭受波浪拍击后的船体自由衰减响应的应变记录为实例进行了首阶和二阶固有频率和阻尾的识别,并与传统的自由衰减记录的人工识别结果作了对比,说明了该方法在船体振动模态参数识别方面的应用前景和需要继续解决的问题。

A theoretical analysis of low-speeed stability oi piston motor and an experimental investigation into it are discussed in this paper. Based on the experimental data, a new view-point about "the limit of lowest stable speed for the motor and the critical point of motor system" is advanced here. The critical point determined theoretically by making damping ratio approximatelly zero agrees with the experimental results of axial and radial piston motors.

本文针对柱塞马达低速稳定性问题进行了理论分析和实验研究,在大量实验的基础上提出了“马达最低稳定转速限制于马达系统临界点”的新观点。理论上用阻尼比近似零的状态所确定的临界点同对轴向及径向柱塞马达所做实验的结果基本一致。

 
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