查询词典 vibration mode

Considering that both the solution of the structure natural vibration frequency and mode as well as its elastic stability coefficient can transform into eigenvalue problem of the structure dynamic equilibrium equation, taking the fundamental frequency and the elastic stability coefficient of the structure as the evaluation criteria, the possible arrangements of Mi-brace and X-brace for halfthrough CFST arch bridge with 360 m span were comparatively analyzed, and the advices for the reasonable space of the Mibrace and the X-brace were advanced.

鉴于结构自振频率、振型及弹性稳定系数的求解均可转化为源自结构动力平衡方程的特征值问题，先以结构基频及弹性稳定系数为衡量标准，对一座360 m跨的中承式钢管混凝土拱桥可能的米字撑及X撑布置方案进行了分析对比，并据此提出了X撑及米字撑的合理间距。

Firstly, modal responses were estimated by the application of robust second-order blind identification technique on the measured vibration signals. And then, modal shapes were extracted from the de-mixing matrix above. Finally, frequency and damping ratios could be obtained from the modal responses using each single degree of freedom mode.

运用该法提取系统／结构模态参数的步骤为：首先利用稳健SOBI的盲源分离方法采集的信号进行分离，然后将分离矩阵作为结构／系统的模态振型矩阵，最后再对各个分离后的单自由度信号提取频率、阻尼比参数。

Based on the analysis for the dynamic characteristics of semi-rigid steel frames with simple or multiple degree-of-freedoms,effects of rotation stiffness of beam-to-column connections on the structure period,frequency,critical damping and mode of vibration are discussed.

通过对单自由度体系和多自由度体系半刚接钢框架的动力特征分析，初步探讨了梁柱连接转动刚度对结构自振周期、频率、临界阻尼以及振型等参数的影响。

Three actuation mechanisms of piezoelectric composite structures are studied: extension actuation mechanism, shear actuation mechanism and hybrid actuation mechanism Tip deflection of piezoelectric composite plate is analyzed for different actuator layer thickness. The research result can be used for mode control of active noise and vibration control and static shape control of intelligent structure.

研究了压电材料复合板的3种作动机制，弯曲作动机制、剪切作动机制、混合作动机制，针对粘贴在纤维板上不同厚度的压电作动层，具体分析了复合板的端部位移，研究结果对噪声和振动的主动控制中的模态控制和智能结构静态形状控制提供了一定的参考。

According to the relationship between the head/disk relative displacement response on vibration excitation and read/write mode, the failure criterion of hard disk drive is provided.

在对所需信息进行处理过程中，涉及到大量数据的读取和保存，特别在微型计算机中，硬盘驱动器起着至关重要的作用，没有硬盘驱动器的参与，计算机将无法有效地工作。

The main problem of the mode synthesis method , applied in structural vibration analysis of prefabricated bridges, is how to select relevant number of low frequency modes synthesized during the course that displacements of substructures are expressed in generalized coordinates that are defined by displacement modes.

模态综合法应用于装配式桥梁结构振动分析的主要问题，是在将子结构坐标缩聚为模态广义坐标的过程中，如何选取适当数目的低阶模态来参与综合。

An algorithm for cable local vibration is presented based on the method of substructure and generalized degree of freedom, in which cable local mode is looked as degree of freedom.

利用子结构方法和广义自由度的概念，把拉索的振型作为自由度来考虑，提出了拉索局部振动的计算方法。

Also, the characteristics of the lower order frequencies and the lower order mode of vibration are found out.

模态分析是动力学计算的基础，为动力学分析计算提供了必要的模态参数。

The calculation and tests of vibration strain mode on a frame structure model to detect the damage of joints are presented in this paper.

通过对某7层钢制框架结构节点损伤的数值模拟和模型试验，利用应变模态在结构损伤前后的相对变化进行框架结构节点损伤的诊断。

By applying the sinusoidal wave mode to simulate the rugged surface of bridge deck,accounting for vehicle-bridge interaction and using Euler-Bernoulli beam theory, a coupling vibration model of vehicle-bridge system was developed. The model was solved by mode analyzing method and Runge-Kutta method, and the dynamic response and the resonance curve of the bridge were obtained. It is found that there are two resonance regions, one represents the main resonance while the other the minor resonance, in the reson...

通过用正弦波形模拟桥面的不平和考虑移动车辆-桥梁间的相互作用，在Euler＿Bernoulli梁理论的基础上建立了一种车桥系统的耦合振动模型·利用模态分析法和Runge＿Kutta法对模型进行数值求解，获得了车桥系统耦合振动的动态响应和共振曲线·发现车桥耦合振动的共振曲线中存在两个共振区域，一个反映主共振而另一个反映次共振·讨论了桥面不平、桥梁振型和车辆间的相互作用对系统振动的影响·数值结果表明，这些参数对系统振动的影响很大，桥面不平和振型对车桥系统耦合振动的影响不能忽略，设计车速应该远离临界车速

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。