Mode of vibration

Discussing the influence of high class mode of vibration on the structure .

并对高振型的影响进行了探讨。

And identify the mode of vibration , frequency and damping ratio of the bridge at last .

最后识别出该桥梁的振型、频率和阻尼比。

Study of A Special Normal Mode of Vibration

结构振动特殊主振型问题研究

Dynamic responses of crankshaft were calculated with the superposition method of mode of vibration .

利用振型叠加法对曲轴进行动态响应分析；

Based on orthogonality of mode of vibration , we put forward arrangement method on the main mode direction .

基于振形的正交性。我们提出主振方向排序的动力分析方法。

The energy of every normal mode of vibration is proportional to the square of the spectra !

每一阶简正振动方式的能量与撞击力在该频率的频谱分量的平方成正比；

Calculation of the eigenfrequency and fundamental mode of vibration of transmission shaft unit of automobile transmission - Case

汽车变速箱转轴组件固有频率和主振型的计算

Investigation into the mode of vibration of swash platc in axial piston pump

轴向柱塞泵斜盘振动模态研究

The inherent characteristic of the system is analyzed by subspace iteration method and the Natural frequency and mode of vibration are calculated .

使用子空间迭代法分析了系统的固有特性，求得了系统的固有频率和主振型。

There are 6 modes in 0-300 Hz scope , corresponding 6 natural frequencies and 6 normal mode of vibration .

在计算频段0&300Hz范围内，得到了六阶振动模态，对应有六个固有频率和六个固有振型。

In addition , the frequency and mode of vibration of liquid with free surface are calculated with the finite cell procedure ADINA .

此外，应用有限元程序ADINA，对圆柱形储箱内带自由液面的晃动频率和模态进行数值模拟。

The effects of the radius and the height of surface of liquid for inherent frequency and mode of vibration of liquid are researched .

研究了液面半径和深度对液体晃动固有频率和模态的影响。

The influence of the high mode of vibration is quite obvious to the structure , and the weak spot is at upside of the structure .

高阶振型对结构的影响比较明显，薄弱层出现在结构的上部。

Generally , the problem of multi-freedom structure forced vibration is calculated by utilizing the ( decomposition ) method of the mode of vibration .

多自由度系统结构强迫振动，一般按振型分解法计算。

In this method . no structural mode of vibration is required as primary data , and the mathematical tool is sim - ple .

该方法毋需结构固有振型为原始数据，且数学工具简单。

Proposals for formulas of mode of vibration and frequency , figures for distribution of acceleration coefficient and scope of application are rationally suggested .

根据试验结果，提出合理的振型、基频建议公式和加速度分布系数建议图形及大圆筒结构适用范围。

This paper uses the finite element method to complete the analysis of derrick modal , and obtain the first ten step natural frequency and the mode of vibration .

本文利用有限元方法完成了井架模态分析，获得前十阶固有频率和振型。

By model analysis and calculation on the main structure of Car Dumper , natural mode of vibration and mode shape of its 10 bands are obtained . 3 .

对翻车机主结构进行模态分析计算，得到了其前十阶固有模态及振型。

It is found that the changes in the mode of vibration are sensitive to the damage degree of elements , and there exists a corresponding relationship between them .

发现振动模态的变化对单元损伤的程度较为敏感且有对应关系。

The modification for the natural frequency and the mode of vibration of blade are needed to treat the fault of steam turbogenerator caused by it 's blades .

为分析处理汽轮发电机组运行中因叶片振动引起的故障，需调整叶片的固有频率和振型。

Localization is able to destroy the regularity of mode of vibration in periodic structure and aberration of vibration mode occurs . Meanwhile , energy accumulation emerges in structure .

局部化破坏了周期结构模态的规则性，使振型发生畸变，造成能量积聚。

If the whole size of a periodic structure is not very large , the mode of vibration can not extend all over the whole structure and localization of vibration will arise .

若周期结构的整体结构尺寸不是很大，那么振动模态不会遍及整个结构，出现振动局部化现象。

The frequency of structure is decreased along with reducing ratio of diameter to height , and dynamic enlargement factor is increased , furthermore , the influence of mode of vibration is obvious .

径高比对振型影响较大，且随着径高比的减小，结构自振频率有所降低，动力放大系数有所增加。

The results indicate that , when the dynamic stiffness ratio of soil to structure is small enough , the SSI system tends to show the fundamental dynamic property of the first mode of vibration .

分析了SSI体系中软土地基对上部结构动力特性的影响，指出了在土、结构相对动刚度比足够小时，软基SSI体系的基本动力特性：一阶模态化趋势；

Do modal analysis of the improved finite element model of the basket to get the dynamic characteristics , such as the natural frequency and mode of vibration , and make preliminary evaluation of the dynamic characteristics .

对改进后挂篮有限元模型进行模态分析，求得其固有频率和振型等动力学特性，并对挂篮动态特性做出初步评价。

This paper studies the structure of the mode of vibration , period , period ratio , shear wall shear , the maximum displacement of shear wall , shear wall stress and floor slab stress .

研究了结构的振型、周期、周期比，剪力墙的剪力、剪力墙最大位移、剪力墙的应力和楼板应力。

The first mode of vibration plays an important role in vertical seismic actions . Formula for calculating vertical seismic load of highrise structures and tall building in seismic design are presented in the paper .

高耸结构与高层建筑竖向地震反应以第一振型为主，据此本文给出了计算高耸结构与高层建筑竖向地震作用的公式，可供抗震设计应用。

It is the first time that we get an exact solution of the function of normal mode of vibration of column-water couple system and a corresponding frequency equation denoted by limited order determinant .

首次给出柱水耦联体系振型函数的精确解和以有限阶行列式表示的频率方程。

The eigenfrequency and fundamental mode of vibration of transmission shaft unit of the automobile transmission-case are the basic data for the analysis of vibration and fault diagnosis of the transmission-case .

汽车变速箱转轴组件的固有频率和主振型是变速箱振动分析和故障诊断的基础数据。

With the floor rigidity increasing , periods of higher mode of vibration increase , structural lateral displacements decrease , and floor shear , floor moment and inner force borne by total steel frames increases .

随着楼板刚度的增加，结构高阶自振周期增大，侧移减少，层间剪力、楼层弯矩及总钢框架承担剪力、弯矩增加；