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Helical rotor is the most important part of rotor flow meter, and its section shape is normally formed by involute and cycloid.

中文摘要：螺旋转子是转子流量仪表中的心脏零部件，其截面形状一般由渐开线和摆线组合而成。

In this part, the characteristics of transient responses of flexible rotor systems with arbitrarily distributed mass on isotropic or anisotropic supports passing through several critical speeds seguencially are examined. Here, the current knowledge of rotor dynamics on the eigenproblem of damped free whirling vibration, the generaliged damped mode theary, the transient forced vibration and so on combined with KBM asymptotic method in the nonlinear vibration theory is employed and extended.

作者综合运用并引伸推广转子动力学关于阻尼自由回旋振动的特征问题、广义阻尼模态理论、瞬态强廹振动等現代理论和方法，结合非线性振动理论中的KBM渐近法，提出自己独創見解和覌点，成功地建立起正回旋和逆回旋两种情况下转子通过临界点的瞬态振动一阶微分方程组，可以在临界点的邻域内从事方程的数值积分计算。

Based on theoretical analysis and model experiment, design of open channel rotor is presented in the paper. The following is included: overall design of system, coolant feed and discharger beside the axis, design of rotor winding, overflow, steam exhausting way in the channel and so on.

论文在理论分析和模型实验的基础上设计了开放管道式蒸发冷却转子方案，其中包括：整体结构设计、轴边进液和余液排出装置、转子线圈结构设计、溢流装置设计和槽内排汽孔方案设计等。

In terms of the transmission shaft balancing, it exists another problem that the shaft is not looked at as rigid body.When the rotor running at a high-speed ,under the action of unbalance force ,the transmission shaft will bend. It is certainly ideal to balance a transmission shaft as a flexible rotor.However, considering the mass production of automobiles, this method is obviously unpractical. In order to discreasing the flexible deformation, in this theory, the feasibility that double- plane balancing takes method the place of multi-plane balancing on a special place for one segment transmission shaft.

从传动轴平衡的角度来看，传动轴并非刚体，在汽车高速旋转时，由于不平衡力的作用会使传动轴发生挠曲，如果将传动轴作为挠性转子进行平衡当然比较理想，但是不符合汽车大批量生产的实际，为减少挠曲振动，利用挠性转子平衡原理，对于单根传动轴，从特殊位置进行校正，从而以二面平衡代替多面平衡是可行的。

This article, using finite element method, calculated the assembly stress, working stress and modality parameter of hydraulic dynamometry rotor, and then simulatively researched the assembly and bearing process of the rotor.

本文用有限元方法计算了水力测功器转子的装配应力、工作应力及模态参数，进而，对转子的装配及承载过程进行了仿真研究。

Hydraulic dynamometry rotor was casted from brass alloy. Because of the working requirement for driving liquid, the laminas of the rotor are assembled slantways and have a complicated structure .

水力测功器转子是由黄铜合金铸造而成，由于转子工作时驱动液体的需要，叶片均呈倾斜状，结构比较复杂。

Different stator structures have an impact on the rotor eddy current loss and the rotor loss can be reduced by proper motor design.

定子结构对高速电机转子涡流损耗影响很大，合理地设计定子结构能够减小转子涡流损耗。

This engine utilizes the rotor round of epitrochoid and the outer rotor round of hypotrochoid the structure of combination, which does not need crankshaft, linkage and gas distribution agencies.

这种发动机是利用内转子圆外旋轮线和外转子圆内旋轮线相结合的结构，不需曲轴、连杆和配气机构。

Firstly, according to electromagnetic field theory, the 2-dimensional (2-D) mathematical model of a three phase squirrel-cage Y802-2 induction motor is developed. Then general equations can be deduced from finite element discrete and functional analysis. The motor's 2D solving region of electromagnetic field is given based on the boundary conditions and assumption conditions of the squirrel-cage induction motor. Through finite element mothod and inner–outer convergence method, magnetic field distributions and magnetic forces of bars can be calculated in following rotor conditions: health rotor, one single broken bar, two adjacent broken bars, two broken bars with one good interval, two broken bars with two good interval and four adjacent broken bars.

本文首先根据电磁场理论建立Y802-2型三相笼型感应电动机二维电磁场的数学模型，并对其进行了有限元离散以及泛函分析，推导出总体方程；在基本假设和边界条件基础上，给出笼型感应电动机二维电磁场的求解区域，然后应用有限元并结合内外双收敛方法，对样机稳态运行进行数值计算，得出电机在转子完好、一根导条断裂、连续两根导条断裂、间隔一根两根导条断裂、间隔两根两根导条断裂及连续四根导条断裂六种情况下的磁场分布和导条所受电磁力的变化情况。

Based on rubbing model of a two-disk rotor-stator system with consideration of both rotor and stator dynamics,a numerical integration program is applied to numerical simulation and analysis of the nonlinear dynamics of this system,such as bifurcation,Poincare section map,trajectory of axes,phase trajectory,frequency spectrum diagram and time response.

基于一新型径向-轴向复合碰摩双盘转子-机匣力学模型，利用数值积分和Poincare映射方法，对转子-机匣系统由于径向-轴向碰摩故障导致的非线性动力学行为进行了数值仿真研究，给出了系统响应随转速和偏心量变化的分岔图和一些典型的Poincare截面图、相轨图、轴心轨迹、幅值谱图和时域响应等。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。