查询词典 mode of vibration

Characteristics of free vibration and forced vibration of a damped system with dry frictional damping,viscous damping and c x·2 damping are analyzed and calculated,acceleration response of free-vibration of the dry frictional damped system has a sudden change when x· is zero,the change value is constant and depends only on the natural frequency ωn and the displacement xk due to dry friction.

本文对存在干摩擦阻尼、粘性阻尼和c.x2阻尼系统的自由振动及受迫振动特性进行了解析及数值计算，得到干摩擦阻尼系统自由振动的加速度响应在速度零点有一突变，这一变化量为定值，且只与系统固有频率ωn及摩擦当量位移xk有关。

On the basis of dual feature identification method, combined with small wave analysis, it effectively extracts failure features, analyzes the stability power failure vibration signal feature on the general Fourier atlas, analyzes the shock power failure vibration signal feature on the resonance modulating Fourier atlas, using small wave to analyze the shock failure vibration signal feature.

是一种在"双特征判别法"的基础上，结合小波分析，有效提取故障特征，进行诊断的"三特征判别法"，所述的故障信号"三特征判别法"就是：在常规傅立叶谱图上分析平稳功率故障振动信号特征，在共振解调傅立叶谱图上分析冲击功率故障振动信号特征，利用小波分析冲击故障振动信号特征。

Based on the hydrokinetics study of jigging process, the free vibration equations of ideal fluid and actual flow vibration equations have been established. These equations are the theoretical foundation to set the operation parameters and air pressure of the jig. The similar criteria and their related equation of model jig have been deducted by actual flow vibration equation. These similar criteria can be used for parameter transformation between model jig and industrial jig. One set of single cell model jig with measuring system has been constructed in laboratory.

本文通过对跳汰过程的流体动力学研究，建立了跳汰机中理想流体的自由振动方程和实际水流的振动方程，为跳汰机工作制度及风源风压的确定提供了理论依据；利用跳汰机中实际水流的振动方程推导出了跳汰机模型试验的相似准数，建立了模化准则关系式，为工业跳汰机与实验室跳汰机之间的参数转换提供了理论依据；并设计建造了一套实验室单槽模型跳汰机及其实验检测系统，为深入开展跳汰理论的研究创造了条件。

In order to reduce the influence of the vibration on image quality, an irrotational displacement isolator is designed based on spatial mechanism and vibration theory, which mainly consists of base platform, moving platform, spatial linkage mechanism and vibration isolators.

为了减小振动对系统成像质量的影响，应用空间机构学原理和减振理论设计由基座平台、运动平台、空间连杆机构和减振元件组成的减振机构。

The torsional vibration, longitudinal vibration and ben- ding vibration of slender shaft in lathing because of axial feeding are calculated and analyzed.

对长细轴车削过程中，刀具轴向进给所产生的扭转振动、纵向振动、弯曲振动进行了计算与分析。

The proper analyses in theory and some experiments on the vibration isolation effect for the vibration system consisting of vibration source, rubber mounts and nonrigid foundation are conducted.The calcula...

通过与传统隔震设计方法、本文物理模型的解析解和实验所得结果进行的比较可知，有限元分析模型绐出的隔振效果预测值在中高频范围(200～1000Hz)最为接近实验结果，从而为船舶动力装置高频隔振分析提供了一个可行的途径。

By field obversion, when ice and structure interact with each other, with the increasing of ice speed ,therere 3 kinds of ice force forms and respectively corresponding: static state vibration , steady state vibration and random vibration.

论文第二部分给出了渤海平台现场监测结果，结果表明，在冰与结构挤压破坏时，随着冰速的变化，有三种冰力形式，分别对应：准静态振动，稳态振动和随机振动。

Through the research into vibration of large liquid rockets, this paper explains the theoretical analysis and testing techniques of POGO vibration, and the means the designer should consider to prevent POGO vibration.

本文通过实际的大型液体火箭的POGO振动研究，阐明了POGO振动的基本的理论分析方法和试验技术，以及需采取的防POGO振动的措施。

Starting from the main meteorological factors impacting vibration of overhead line, the impact of conductor tension variety on self-damping feature of conductors is analyzed according to state equations of overhead line, and by use of energy balance principle the variation of vibration level is calculated and the vibration life under different meteorological conditions are obtained.

文章提出了一种基于短期测量数据评估线路全年振动状态和寿命的方法，从气象影响线路振动的主要因素出发，根据导线的状态方程分析导线因张力变化对导线自阻尼特性的影响，并采用功率平衡法计算出振动水平的变化，得到了不同气象条件下的振动寿命。

Then,the vibration of the model is calculated by using the FEM. Comparing the level of vibration with different multilevel quadrate steel beams,the effects and rules of isolating vibration are tested.

然后用有限元软件模拟计算了加多级方钢隔振后的结构振动水平，通过比较分析，得到了多级方钢的隔振效果和振动能量在其间的传播规律。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。