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This work employs operator-splitting method / finite element method to study dynamic performance and the stability of liquid-lubricated herringbone grooved journal bearing with micro-polar lubricants. Load capacity, friction resistance, stiffness/damping coefficients and critical rotor mass were investigated.

本文采用算子分裂/有限元法计算微极性流体润滑剂的螺旋槽径向轴承承载力、粘性阻力、润滑油膜刚度系数和阻尼系数等特征量，研究轴承的动力特性和稳定性问题。

Wind-induced vibration Fluid-structure interaction Added mass Aerodynamic damping Critical wind velocity

风致振动；流固耦合作用；附加质量；气动阻尼；临界风速

In this paper, the JFO condition, satisfied with global mass continuity, is incorporated into an universal Reynolds equation with micro-polar fluid which is solved for the oil film pressure using OSM and FEM. The bearing load capacity and friction resistance were given, and stiffness/damping coefficients and critical rotor mass were obtained by solving a pressure perturbation equation with micro-polar lubricants.

本文采用满足全流场质量连续的JFO边界条件，采用微极性流体的广义雷诺方程来求解油膜压力分布，进而获得油膜承载力和粘性阻力等轴承动力特性量；采用小参数摄动法得出油膜压强扰动方程，并采用有限元法解出扰动压强，积分扰动压强获得油膜的阻尼系数和刚度系数，进而求得了表示轴承油膜稳定性的临界转子质量。

At last, the whole model including the cross beam and the supporting cylindrical shell is modeled and computed to evaluate vibration damping performance.

最后建立了井字梁与圆柱壳的整体有限元模型，进行了对整体模型的粘弹阻尼减振分析计算。

Then, the cross beam with I-section is modeled and calculated by considering different damping depths in order to analyze which depth can lead to a better vibration control effect.

然后，针对几种不同铺设深度的情况对复合材料井字梁进行了建模分析，对比得出了较佳的阻尼铺设位置。

The coupling stiffness and damping coefficients of the thrust bearing under the crosswise vibration of the rotor were studied.

对推力轴承在转子横向振动下的偶合刚度和阻尼系数进行了系统的研究。

The most effective method of damping the oscillation is to install power system stabilizer and direct current modulation. But PSS designed to a certain mode will produce bad effect to other modes.

抑制低频振荡最有效的方法是装设电力系统稳定器和直流附加控制器，但针对某一振荡模式而设计的PSS会对其它模式产生负作用而破坏系统稳定性。

Based upon the energy-dissipation mechanism, the mechanical model of the damping layer sandwiched by plates or cylindrical shells is set up with the deformation energy method and the theory of modal analysis.

最后，从理论上首次推导了板壳类结构局部约束阻尼处理的优化位置。

The methods for treatment of earthquake input and modeling of radiation damping in infinite foundation were established based on cylindrical wave equation.

其中，地震波的输入方法以及无限地基辐射阻尼的模拟方法都是在柱面波动方程的基础上建立起来的。

Parameters of the controller are tuned according to the damping ratios of the weakly damped inter-area oscillation modes estimated on line by an improved Prony algorithm.

该控制器使用改进的Prony算法，在线分析得到系统弱阻尼区间振荡模式的阻尼比，并据此通过自寻优的方法调整控制器的参数。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"