模态

The results also revealed that the modes of the misaligned rotor system were different from the aligned one.

分析结果还表明不对中转子系统的模态与理想对中系统相比有较大的差别。

In the present study, the effect of centrifugal force was investigated by three dimensional finite element analyses; the vibration characters of random mistuned blade-disc were also being investigated by probability methods and the Young's modulus of material of all blades are regarded as random parameters.

结果表明，离心力对失调叶片轮盘系统局部化振动有减弱作用；所有叶片弹性模量在5%误差范围的随机失调系统，其固有频率与非失调相差很小，即失调叶片—轮盘系统可以按照循环对称结构进行模态分析。

By use of the Benfield-Hurda modal synthesis method, the structural model of mistuning blade-disk assemblies is established.

用Benfield—Hurda的混合型模态综合法，给出了非谐调叶盘的特征解方程。

This paper presented a method for robustness investigation of mistuning identification of disks by taking free response parameters as input information.

为有效运用整体叶盘结构失谐识别技术，针对一种以模态信息作为输入参数的识别方法进行了鲁棒性方面的研究。

According to the structural properties of tuning blade-disk assemblies, the matrix perturbation method is used to analyze the influence of mistuning on the natural vibration characteristics. The formulas for perturbation values of first and second order are derived.

根据谐调叶盘的结构特点，用矩阵摄动法分析了失调对叶盘固有振动特性的影响，推导了孤立特征值和密集模态组二种情况下固有频率和振型的一阶、二阶摄动计算公式。

Combining the results of modal experiment analysis on body-in-white and the results of finite element analysis, structural dynamics modification on the car front-body of a monocoque body has been made based on optimization algorithm.

结合轿车白车身试验模态分析和有限元分析的结果，成功地对某承载式轿车车身的车头子系统结构进行了基于优化算法的结构动力学修改。

A method for parameter optimization based on multimode vibration control was presented.

提出了一种多模态振动控制的参数优化方法。

The achievements will push the development and application of multimode microwave sensor in China.

本研究成果将会对我国多模态微波遥感器的发展和应用起推动作用。

Dynamics models of vertical direction and horizontal direction for tractive elevator are established.

最后，在仿真结果的指导下进行电梯整体试验模态分析和电梯减振技术研究。

Design of a high-rise business-living building with double-tower structure with enlarged base ;2. Dynamic response analysis of an asymmetric two-tower tall storeyed building with enlarged base ;3. Based on the mode analysis and time-history analysis of two examples,the vibration characteristics of the connected twin-tower structures with enlarged base in vertical earthquake excitation was discussed in this paper,and the calculating results of the structures with or without connecter,both with enlarged base are compared.

采用平面杆系模型并用静力凝聚法消除结构耦联的水平自由度和转角自由度，结合两个算例的竖向振动模态分析和时程响应分析，探讨了大底盘双塔楼连体结构在竖向地震作用下的振动特性，对比了大底盘双塔楼结构有无连体结构形式的计算结果，得出了这种结构形式在竖向地震作用下的一些特性和具有参考价值的结论。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。