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equivalent damping coefficient
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  等效阻尼系数
     The calculating formula of equivalent damping coefficient of k1-k6 model is introduced according to the difference of damping torque coefficients between c1-c12 model and Phillips-Heffron k1-k6 model.
     根据c1-c12模型与Phillips-Heffronk1-k6模型下阻尼力矩系数之差,给出了k1-k6模型等效阻尼系数算式。
短句来源
     Solution Of Equivalent Damping Coefficient of Fuze Initia Mechanism
     后座机构等效阻尼系数的求解
短句来源
     A simplified mechanics model for the shock absorber is set up, and the effects of equivalent damping coefficient and stiffness, excitation frequency and amplitude on dampin g force amplitude and hysteresis angle are analyzed with the explanation on some phenomena in testing given.
     建立了简化的减振器力学模型,据此分析了等效阻尼系数、等效刚度、激振频率、振幅等参数对减振器阻力幅值和滞后角的影响,解释了实验测试中的现象。
短句来源
     And carried out a fitting in calculation on its equivalent damping coefficient by way of primitive characteristics of hydraulic torque converter, the quantitative relationship among the non-linear equivalent damping coefficients with the speed ratio of turbine and pump wheel and with the rotation speed of pump wheel was obtained.
     再通过液力变矩器原始特性对其等效阻尼系数进行拟合计算 ,得出了液力变矩器非线性等效阻尼系数与涡轮、泵轮速比及泵轮转速的定量关系。
短句来源
     This paper put forward a method,which is used to identify the blow-off point of shock absorber valve system,based on the damping-displacement characteristic test of shock absorber,conversation of energy and equivalent damping coefficient.
     以减振器示功特性试验为基础,以能量守恒为依据,提出一种以等效阻尼系数为对象的识别减振器阀系开阀点的方法。
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  “equivalent damping coefficient”译为未确定词的双语例句
     According to this concept, this paper studied the effect of non-classical damping and applicability of approximate decoupling method by changing bridge type, equivalent damping coefficient and earthquake input.
     通过分析表明:桥梁的规则性不同,结构的非经典阻尼特性不同,强迫解耦方法的适用范围也不同,比较而言,规则式连续梁桥受非经典阻尼的影响要小于跨河式和跨岛式桥型; 等效粘滞阻尼系数对强迫解耦的适用范围有直接的影响,随着阻尼系数增大,强迫解耦误差也相应增大;
短句来源
     In this paper, on the basis of analysis of low-frequency oscillation'sprinciple , the model of power system for low-frequency oscillation to be used in the paperhas been built and additional equivalent damping coefficient of excitation system and powersystem stabilizer (PSS) is educed.
     本文在分析了低频振荡原理的基础上,建立了相关的系统模型,并由此得出励磁系统和电力系统稳定器(PSS)的等值附加阻尼系数。 然后,计算出机电模式特征值虚部,并推导出实部表达式,从而得到特征根的初值;
短句来源
     A equivalent damping coefficient per cylinder was presented.
     最后通过能量法给出了转化到曲轴中心处的单位气缸当量阻尼系数.
短句来源
     The effect on the electromechanical mode of the excitation control is expressed by the additional equivalent damping coefficient. The formula of the real part including only inertia constants M,damping coefficients D and corresponding eigenvectors is derived to assume the real part of the eigenvalue,thus working out the initial eigenvalue.
     再用等值阻尼系统表示发电机的励磁控制作用对机电振荡模式的影响,推导出只用机组惯性常数M和阻尼系数D及相应的特征向量表示的机电模式的实部估算公式,由此公式估算出相应的实部,从而得到各振荡模式的特征根的初值;
短句来源
     For analyzing the result of random test,the methods of equivalent stiffness,equivalent damping coefficient based on statistics are prompted.
     对随机过程加载的试验结果进行处理,提出了基于概率统计的等效刚度、等效阻尼及耗散功率谱等方法。
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  equivalent damping coefficient
Figure 18 provides the hysteric area and the equivalent damping coefficient for the frame with flat-plate-type BRBs and the cross-type BRBs.
      


This paper describes the method and process by which dynamic parameters of the spindle-case system of lathe are identified. An experiment on unconstrained (free) steady-state excitation has been made for the system mentioned by means of a transfer function analysis instrument, and impedance figure has been plotted. According to the impedance figure, mechanical and mathematical models of the structural system are established, and the accuracy of the mathematical model is verified. Based on the experimental-results,...

This paper describes the method and process by which dynamic parameters of the spindle-case system of lathe are identified. An experiment on unconstrained (free) steady-state excitation has been made for the system mentioned by means of a transfer function analysis instrument, and impedance figure has been plotted. According to the impedance figure, mechanical and mathematical models of the structural system are established, and the accuracy of the mathematical model is verified. Based on the experimental-results, the structural system is simlified as a mechanical model involving three masses, three springs and two dashpots. In this paper the contact stiffnesses and impedances between the rotors of the front and the rear bearings of the spindle, the inner and the outer rings, as well as the contact stiffnesses and impedances between the inner and the outer rings of the bearings and the spindle-case are simplified to equivalent spring stiffnesses and equivalent dampings. The equivalent stiffness coefficients and the equivalent damping coefficients of their supports are determined quantitatively.

本文介绍车床主轴——箱体系统的动态参数识别方法及过程。作者用传递函数分析装置对上述系统进行了无约束(自由)的稳态激励试验、绘制了阻抗图。根据阻抗图建立了结构系统的力学和数学模型,并对此数学模型的可靠性进行了验证。在试验的基础上对结构系统进行了简化,简化后的力学模型由三个质量、三个弹簧、两个阻尼元件组成。本文在分析研究过程中将主轴前、后轴承的滚动体与内、外环的接触刚度和轴承内、外环分别与主轴和箱体之间的接触刚度和阻尼简化为一等效弹簧刚度和等效阻尼,并对上述系统前、后支承的等效刚度和等效阻尼系数进行了定量分析。

In this paper,the method of approximate calculation for nonlinear random earthquake responses of offshore structures is studied.A simple expression for equivalent damping coefficient is deduced.Using this expression,the random responses of the structures to earthquake can be evaluated directly without any iteration.Simple solution process and high accuracy are main advantages of this method.

本文主要针对海洋结构非线性随机地震响应问题的近似计算分析进行了研究,导出了一个求解等效阻尼系数的简单表达式,利用这一等效阻尼系数,就可直接求解非线性结构的随机地震响应,而不必进行反复的迭代。这一方法的优点是求解过程较简单,计算速度快,但又具有较高的精度。

The stable nonsynchronous responses and the stability of motion of a rigid rotor supported on squeeze film damper bearings(SFDB)without a centralizing spring are studied by means of harmonic balance method.The motion of the system is approximately simulated by two coupled second order differential equations.The stable nonsynchronous response at the action point of nonlinear oil film force can be obtained from the periodic solution of the differential...

The stable nonsynchronous responses and the stability of motion of a rigid rotor supported on squeeze film damper bearings(SFDB)without a centralizing spring are studied by means of harmonic balance method.The motion of the system is approximately simulated by two coupled second order differential equations.The stable nonsynchronous response at the action point of nonlinear oil film force can be obtained from the periodic solution of the differential equations of motion.With the help of an equivalent linearized model of the oil film force,the equivalent dynamic characteristic coefficients corresponding to the determined motion of the original system are obtained.A new method to analyse the stability of the motion of the equivalent linearized system is put forward in detail according to the theory of small pertubation.It is quite interesting to point out that the derived criterion for the motion stability is simple in form and depends on the equivalent damping coefficients only.A system with 1/2 order subharmonic response is taken as an example to illustrate this method.The calculated results are compared with those of fourth order Runge Kutta method.It is shown that our method has the same accuracy of calculation,but gains an advantage in saving computing time.

本文用谐波平衡法研究了无定心弹簧刚性转子—挤压油膜阻尼器轴承 (SFDB)系统的稳态响应和稳定性 ,其中通过二个耦合的二阶微分方程来近似模拟运动 ,非线性油膜力作用处的非同步稳态响应通过运动微分方程的周期解求得。本文建立了油膜力的等效线性化模型。提出了新的稳定性分析方法。利用导出的等效动力特性系数建立了稳定性分析的判据 ,证明满足此判据的稳态响应是稳定的。并以该系统的次谐波响应为例 ,比较了本方法与数值积分方法的计算结果

 
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