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equivalent linear damping coefficient
相关语句
  相似匹配句对
     the equivalent of E.
     E.
短句来源
     The Equivalent Method and Principle
     等效方法与等效原理
短句来源
     Equivalent Linearization of Nonlinear Forces
     非线性力的等效线性化
短句来源
     Damping Rubber
     阻尼橡胶
短句来源
     The relative coefficient
     亲本本身性状表现与一般配合力效应的相关系数因性状而异。
短句来源
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  equivalent linear damping coefficient
The transmissibility of a nonlinear viscoelastic isolator is compared with that of a linear isolator using an equivalent linear damping coefficient.
      


In this paper, the nonlinear characteristics of damping in both rotor blades and landing gears of helicopter have been investigated. The functions used to describe the nonlinear damping have been analyzed. The experiment results of the damping of helicopters are shown. Based on the relation of describing function and the equivalent linear damping coefficients of nonlinear damping force, an identification method for the identification of parameters of non-linear...

In this paper, the nonlinear characteristics of damping in both rotor blades and landing gears of helicopter have been investigated. The functions used to describe the nonlinear damping have been analyzed. The experiment results of the damping of helicopters are shown. Based on the relation of describing function and the equivalent linear damping coefficients of nonlinear damping force, an identification method for the identification of parameters of non-linear damping has been proposed. The practical work of the identification has been carried on two kinds of helicopters.

本文研究了直升机的非线性阻尼特性,分析了非线性阻尼特性的描述形式,展示了直升机阻尼特性的试验结果,提出了基于阻尼特性的功量图数据或当量粘性阻尼系数数据的非线性阻尼特性参数识别方法,对直八型直升机的非线性阻尼特性进行了实际的识别研究.

A mathematical model of the force-drive current and damp force based on the mix mode of flow mode,shear mode is established;and a 1DOF vehicle vibration model with semi-active suspension system is described. Based on the theory of random vibration, nonlinear behavior of MR damper model is to be linearization, the expression of equivalent linear damping coefficient is brought forward; and random statistic data of sprung mass acceleration are discussed. On the basis of MATLAB/SIMULATION, the effect of driving...

A mathematical model of the force-drive current and damp force based on the mix mode of flow mode,shear mode is established;and a 1DOF vehicle vibration model with semi-active suspension system is described. Based on the theory of random vibration, nonlinear behavior of MR damper model is to be linearization, the expression of equivalent linear damping coefficient is brought forward; and random statistic data of sprung mass acceleration are discussed. On the basis of MATLAB/SIMULATION, the effect of driving current on linear damping coefficient and the acceleration power spectral mean square root of the sprung mass is analyzed. The simulation result shows that the force generated by MR damper has nonlinear behavior;the vehicle vibration characteristics can be adjusted by changing the equivalent linear damping coefficient; the acceleration power spectral mean square root of sprung mass can be decreased by increasing the driving current of MR damper;and the ride of automobile has been improved.

建立了基于混合模式的磁流变液减振器的工作电流与阻尼力的数学模型和单自由度车辆随机振动非线性数学模型。运用随机振动理论,对磁流变液减振器非线性模型进行了线性化处理,给出了减振器等效阻尼系数、车身加速度等参量的随机统计量的计算方法。利用数值仿真分析了半主动悬架系统控制器的驱动电流对车辆减振器等效阻尼系数的影响,对车辆悬挂质量垂直振动加速度功率谱均方根值的影响。研究结论表明磁流变液减振器所产生的阻尼力具有非线性特性,通过调节减振器等效阻尼系数可以实现对车辆随机振动特性的调节,并且适当地增加磁流变液减振器的驱动电流能够降低车辆随机振动加速度功率谱均方根值,提高车辆行驶的平顺性。

Magnetorheological (MR) fluid damper is a relatively new type of device for application to semi-active vibration control.The essential characteristic of the fluid is its ability to reversibly change from a free-flowing,linear viscous fluid to semisolid with a controllable yield strength in milliseconds when exposed to an magnetic field.External energy required by the adjustable fluid damper is minuscule and the damping force produced by the damper is large,while speed of its response is on the order of milliseconds.In...

Magnetorheological (MR) fluid damper is a relatively new type of device for application to semi-active vibration control.The essential characteristic of the fluid is its ability to reversibly change from a free-flowing,linear viscous fluid to semisolid with a controllable yield strength in milliseconds when exposed to an magnetic field.External energy required by the adjustable fluid damper is minuscule and the damping force produced by the damper is large,while speed of its response is on the order of milliseconds.In this paper,the performance and equivalent linear damping coefficient of MR damper are analyzed based on the Bouc-Wen model,the energy dissipation method and the trapezoidal rule.Applying the MR damper model to an oscillator with signal degree of freedom harmonically excited through its support,the transmissibility which is the degree of relative isolation and defined as the ratio of amplitude of motion of the oscillator to amplitude of motion of the support is determined,and the phase angle of steady response as well.

基于Bouc-Wen磁滞模型,分析了磁流变阻尼器的性能;采用能量法和梯形积分法计算了磁流变阻尼器的等效线性阻尼系数;将磁流变阻尼器用于结构振动系统隔振,给出了结构在基础激励下的振动控制效果——传递率及稳态响应的相位图。

 
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