查询词典 mode of vibration

The standard function mode is that the system's excitation functions are sine wave, square wave and curve of free little damped vibration, the vibration's frequency are about 2Hz. The vibration mode must be in accord with the crane's work status in the vision computer.

调查表明，集装箱桥机驾驶员座椅工作中更多的是小车运行方向的前后振动，所以我们的多自由度座椅振动平台采用X方向的单自由度激励，即可实现座椅振动的大部分体感功能，同时开发成本也大大降低。

The piezoelectric motor includes a piezoelectric member which generates a first vibration mode and a second vibration mode simultaneously by an applied power and a frictional member of which a portion is insertedly attached into a concave portion indentedly formed on one side of the piezoelectric member, wherein the frictional member is in an elliptic motion by the vibration generated by the piezoelectric member, so that an influence of the attachment of the frictional member to a resonance frequency can be minimized.

该压电电机包括：压电构件，通过施加的功率同时产生第一振动模式和第二振动模式；摩擦构件，摩擦构件的一部分插入地附着到凹入地形成在压电构件的一侧上的凹入部分中，其中，摩擦构件通过由压电构件产生的振动进行椭圆运动，从而能够使附着摩擦构件对谐振频率的影响最小化。

The results show that the fracture mode of blade is vibration fatigue and the main cause of initiation of fatigue crack is the mismatch between rabbet and tongue-and-groove.

结果表明，叶片的断裂模式为振动疲劳，叶片榫头与榫槽配合不当是萌生疲劳裂纹的主要原因。

By means of the numerical methods, the root of the resonance frequency equation is solved, and by means of Ansys software and the finite element method, the torsional vibration mode of the thin ring is analyzed, and the academic value and the simulant value of the resonance frequency are compared.

利用数值方法，求出了共振频率的理论值；并利用Ansys软件，对薄圆环振子进行了有限元模拟，得到了其共振频率的模拟值。

According to the lateral deflection equation of the wall frame-structure ,an exact flexibility matrix is developed first and, then, the natural period and vibration mode of the wall-frame structure is defermined in this paper. According to actual earthquake action, the structural response is calculated with statical analysis.

本文在框架-剪力墙侧移公式的基础上建立结构的柔度矩阵，确定结构的自振周期和振型，采用静力方法按实际的地震作用分布计算结构的作用效应，然后采用振型分解反应谱法对结构进行抗震分析。

Vibration , reflectional dazzle light , noise , and the shape , color , contrast , and display mode of the displayed characters were main factors influencing the ergonomic availability .

目前国内虽有一些零散标准可用于评价人机显示/控制界面适配性工效，如特定的显示对比度，字符形状，颜色特征，照明环境等标准，但在工程使用中，最有价值的应该是驾驶员/显示/控制作业系统的工效综合评定方法和技术。

77Cm〓 are observed and predicted to be splitting of vibration mode of inter-icosahedral B-B bonds, which are unrelative to the atmospheric conditions.

IR结果发现所有样品在2850.27cm〓和2917.77cm〓处均有吸收峰，这是由于B〓O中的B〓二十面体位于菱面体单胞内，对称性降低，发生简并分裂所致。

First, this paper presents three girders model with double cable planes which main girder and side girder is connected by rigid arms, analyzes the dynamic characteristic of Yonghe cable-stayed bridge and obtains its natural vibration modes (i.e., frequency, damping values and the mode shapes ) by ANLSIS structural analysis program and uses these parameters as dynamic dactylogram of the intact case of cable-stayed bridge. Using the passage of random as the ambient vibration ,the dynamic properties of Yonghe Bridge is measured and the modal parameter of its 15 years after is identified and used as dynamic dactylogram of the damaged case. By the finite element analysis and locale vibration test, damaged and undamaged modal parameter is analyzed and curvature mode shape, which is sensitive to damage state, is introduced as possible candidate for identifying and locating damage in the cable-stayed bridge. Selecting the branch of part measured point from modal parameter, this paper deduces the damaged index which can detect the possible damaged location of the cable-stayed bridge deck and identifies the damaged region and degree for Yonghe Bridge. For the purpose of structural condition monitoring in in-situ , from another viewpoint, this paper introduces the method called the best optimization vector to detect damaged location and degree. The accuracy and reliability of the method presented in this paper are demonstrated by static analysis and test and the healthy state of Yonghe Bridge can be evaluated.

建立了双索面通过刚臂与主梁及边梁相连的三梁式力学模型，采用ANSYS结构分析程序对永和斜拉桥进行动力分析，对其振动模态参数进行识别，以此作为斜拉桥完好状态下的动力&指纹&；采用自由交通流作为环境振源，对永和斜拉桥动力特性进行测试，识别出永和斜拉桥使用15年后的模态参数，确立了破损状态下的动力&指纹&；利用有限元分析、现场振动测试，对破损前后的模态参数进行分析，提取对破损状况较敏感的模态曲率作为斜拉桥破损诊断的参数；并从模态参数中选取部分点的分量，导出可以指示斜拉桥桥面大概损伤位置的Index损伤指标，识别出斜拉桥发生破损的区段及破损程度；考虑大型斜拉桥在线监测要求识别破损的具体位置，从另一角度提出采用最优矢量法具体确定破损发生的位置及程度；为验证本文研究成果，对永和斜拉桥进行静力分析及静力测试，对其健康状况提出可靠的评价。

Through the retrofit for multi-frequency regulation, shaft seal ing water system,rotator material and shaft cover orientation mode of 150 NW-78×2 low pressureheater drain pump,pump corrosion at low-load operation,bad packing seal,bearing vibration,bearing burned have been solved.

通过对150 NW 78×2型低压加热器疏水泵进行变频调节改造，对轴端密封水系统、转子部件材质和轴套锁母定位形式进行了改进，消除了给水溶氧超标、轴承振动超标和轴承烧毁等缺陷，提高了泵组健康运行水平。

Finally, analyse the calculated results of this ship with another catamarans. From this result obtained unsymmetrical catamaran hull of this particular special vibration mode and analyse the vibration mode in order. The calculation is fairly reasonable, for the future of the asymmetric catamarans to calculate the vibration analysis of a number of reference.

最后将本船计算结果与另一艘双体船计算结果进行了比较分析，得到不对称双体船这种特殊船型的特殊振动模态，并就其振动模态出现次序进行了比较分析，说明本次计算是比较合理的，为今后不对称双体船的振动特性分析计算提供了一些的参考。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。