查询词典 vibration mode

Firstly, the natural frequencies and normal mode shapes of the fluid-conveying pipe with zero fluid velocity (i.e. U=0) were determined with the transfer matrix method. Next, these natural frequencies and normal mode shapes were used to derive the equation of motion for the fluid-conveying pipe with fluid velocity U.neq.0 by using the expansion theorem. Finally, the free and forced vibration responses of the pipe with flowing fluid were obtained by means of the Jacobi method and the Newmark direct integration method.

首先吾人使用转移矩阵法来求取一流速等於零(即U=0)、跨距数为N之流体输送管的自然频率及其所对应之正规化振态，然后利用振态重叠法原理来推导流速不等於零(即U.neq.0)时，整个流体输送管在外力作用下的运动方程式，最后再以Jacobi法及Newmark直接积分法来计算该水平流体输送管的自然频率及强迫振动反应。

It concludes that the mode of the linear pe-riodic time-varying vibration system is complex mode and isperiodically time-varying .

通过研究发现，线性周期时变齐次系统的模态不仅具有复模态的性质，而且为周期时变性。

On the knowledge of vibration of polyatomic molecules, it has gonethrough the change of two stages: from normal mode model to local modemodel. In present, there mainly are two methods to deal with this problem:the traditional approach, namely ab initio, based on solving Schr〓dinger equa-tions of molecular vibration, and the algrbraic approach based on group theory.

在对多原子分子振动问题的认识方面，人们经历了从简正模模型到局域模模型转变的过程，而在处理方法上目前主要有两种：基于求解薛定谔方程的从头计算法和基于群论方法的代数方法。

The paper also simulate the vibration response of frame when suspension point were changed, which indicates, through comprehensive consideration with the mode of frame, that it can get better oscillation damping affection to position the suspension points to the node of mode shape.

本文还在模态集成模型上模拟分析了发动机悬置点的变化时车架振动响应，表明通过与车架的模态综合考虑，把发动机的位置变换到车架模态振型的节点位置也有较好的减振效果。

After the carboxymethylation,the solubility of pachyman in the water was significantly increased,its β-D-glucan characteristic absorption peak at 890 cm-1 became weak obviously,and its methylene vibration absorption peak and CO antisymmetrical stretch vibration absorption peak appeared at 1 333 and 1 606 cm-1 respectively,which indicated that the carboxymethylation succeeded.The analysis of AFM results showed that CMP molecules existed in different morphology under different solution conditions,and that the concentration,ionic strength and solvent physical chemistry characteristics of polysaccharide solution had effects on the CMP chains conformation and the action mode between different molecular chains.The phenomena were considered to be related to hydrogen bond association and intramolecular and intermolecular electrostatic interactions of CMP.

结果表明：经过羧甲基修饰，茯苓多糖在水中的溶解性显著增加，890 cm-1 处的β-D-葡聚糖特征吸收峰明显减弱，1 333 cm-1 处出现次甲基振动吸收峰，1 606 cm-1 处出现〖JG(〗C〖ZJLX，Y〗O〖JG)〗非对称伸缩振动吸收峰，表明羧甲基化成功；原子力显微镜分析表明：在不同溶液条件下，CMP分子以不同形态存在，多糖溶液的浓度、离子强度及溶剂的物化特性均能对CMP的分子链构象及链间相互作用形式产生影响，推测可能与CMP分子内、分子间的氢键缔合及静电作用有关，CMP分子与云母基底间的吸附及静电作用也会对CMP的分子链构象及图像质量产生影响。

Fist, mode analysis is accomplished, and stiffness influence of the structure by the member parameter and the accessional columns are analysed. Then the numerical value of the pulsoting wind load was used, the time history contrastable analysis between mega-sub controlled structure and general megaframe structure has been accomplished. Finaly, the influence of vibration-controlled efficiency under the different member parameter of vibration-absorption megaframe structure is analysed.

首先进行了模态分析，讨论了钢筋混凝土巨—子型控制结构的主要结构参数及附加柱刚度对结构整体刚度的影响：利用脉动风荷载计算机模拟的荷载值，并对它和一般的巨型框架结构进行了脉动风荷载下的时程对比分析，讨论了钢筋混凝土巨—子型控制结构的主要结构参数对减振效果的影响，研究了钢筋混凝土巨—子型控制结构的动力特性。

This algorithm integrates the fuzzy logic and the sliding mode control. By this method, the control incontinuity is smoothed in a thin band of the switching plane so that the vibration of fuzzy sliding mode control is eliminated.

该算法将模糊逻辑和变结构控制结合起来，利用模糊方法，在切换面临近的一个薄边界层内对控制的不连续性加以平滑，以减弱变结构控制产生的抖振。

The calculated free vibration frequencies and mode shapes of the whole structural model compare well with measured values. The influences of the various supporting conditions upon the frequencies of the trashrack and the free vibration characteristics of the single rack bars were then studied.

对栅架整体结构模型的自振频率和振型进行了量测，并与数值计算结果作了对比，二者基本吻合，说明成果是可靠的；此外，还对栅架支承条件对拦污栅自振频率的影响以及单根栅条的自振频率特性进行了探讨。

It is shown that the first order strain mode shape is sensitive to the damage degree and location of the frame joints. And the existence of vibration node in high order stain vibration shape may lead to misjudging.

结果表明，一阶应变振型对损伤及其位置敏感，高阶应变振型节点的存在使得依据高阶应变模态进行损伤诊断时容易造成误判。

Based on the physical characteristics of chatter marks, the interaction between marks and vibration of rolling mill is described. The effect of rollers, work roller bearings, spindle coupling clamp and roll grinding machines on chatter marks was studied with vibration measurement and mode analysis for both mill and roll grinding machine.

从振动纹的物理特征分析入手，阐述了振动纹与轧机振动之间的关系，通过对轧辊与磨床的振动测试和模态分析研究了轧辊辊系、工作辊轴承、主传动接轴和轧辊磨床对振动纹的影响。

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。