振动

The obtained full vibrational spectrum not only reproduce known experimental energies,but also give all high-lying vibrational energies which may be difficult to obtian experimentally.

得到的完全振动能谱既重复了已知的实验能级，又给出了尚没有实验数据的高振动激发能级的正确数值，获得的各电子态离解能精确地符合实验值。

Metal hydrides have attracted a lot of attentions in both fundamental and applied re-searches due to their important industrial applications.

通过对有序与无序相晶格振动的计算解释了Fe一Al系统金属间化合物有序与无序相振动熵差的物理原因。

Aiming at the problem of heavy duty vehicle engine vibration and noise, this thesis develops theoretical and application research on the vibration and noise control for a 6-cylinder, in-line, four-stroke diesel engine based on modern design theory and technique.

本文以重型车用发动机的振动和噪声问题为出发点，应用现代设计理论与方法对某直列四冲程六缸柴油机开展振动与噪声控制问题的理论和应用研究工作。

A crankshaft of four in-line cylinder engine was applied as an example, and the vibration response of crankshafts with different depth crack was simulated.

以一四缸发动机的曲轴为例，对含不同深度裂纹曲轴的振动响应进行了仿真计算，对其扭振、纵振及弯曲振动的频谱特性进行分析，提取并总结了裂纹曲轴动力学的一些特征。

The analysis results indicate that the influence of the infilled walls on the structural vibration configuration is not obvious, but when the weak-floor caused by reduction of the infilled walls is at the bottom of construction, it has a greater impact on the overall vibration configuration of the structure.

结果 填充墙体对结构振动形态的影响不明显，但是当因减少填充墙体造成的&薄弱楼层&在建筑底部时，对结构的整体振动形态影响较大。

In order to know the influence of the infilled wall on the RC frame structure, and give some suggestions to the structure design, 29 finite element analysis models of RC frame with infilled walls are established.

目的 为了解填充墙对框架结构振动周期、振动形态、动力反应等的影响特点，给结构设计提供参考和建议。

According to the standard and request of mechanical structures for electronic equipment tests, the finite element model of the electronic equipment cabinet was built by using the software of finite element analysis-ANSYS and simulated the tests of random vibrations by loading and calculating. The 3-D isopleths graph of deformation and stress of the cabinet was obtained. It could confirm the maximum of deformation and stress of the cabinet and probability of occurrence. Through more analysis of the frequency response curve reflected directly and clearly the deformation of the cabinet within the particular seismic frequency.

根据电子设备机械结构随机振动试验的标准和要求，采用有限元分析软件ANSYS建立电子设备机柜结构的有限元模型，通过加载求解对其进行随机振动试验的数值模拟，得到机柜有限元模型的三维变形和应力等值线图，进而确定机柜承受应力和变形的最大值及发生概率；通过对频率响应曲线的进一步分析，可以直观明了地反映出机柜承受一定频率范围地震下的变形情况。

Finally, the control method of structure response vector reconstruction is applied to the vibration active control of the layer board made in complex materials on the satellite antenna. It is showed that this method is effective.

最后把结构振动响应向量重构控制方法应用于层板式复合材料卫星天线的实际振动控制中，验证了该控制方法的有效性。

The ionic space charge in the micro-voids of water tree will produce a period vibration by AC voltage stimulating. Under superposition voltage, the vibration can impel the ion penetrating into the tiny crackle between micro-voids of water tree and lead to a change in the conductivity of water tree. With this the ultra-low frequency spatial current signal of the water tree would be emerged in detecting circuit. The polarization and depolarization of the polar end-group of the PE formed in water tree developing will also contribute to this special signal.

本文分析认为，水树枝中的离子型空间电荷在几种电压共同作用下会发生周期性振动，这种振动会促使水树枝中的导电离子在较低的叠加电压激励下进入连接水树枝微孔的微裂纹，微裂纹导通不仅导致水树枝的电导发生变化，而且在检测回路中会有水树枝老化超低频特征信号电流产生。

The characteristic of librating signal of engines jar cover in frequent field is analyzed.The librating diagnosis mechanism to leaking gas fault of engine valve is investigated,and the distilling method of chatacter parameter Eh/Ew which is ratio of high frequency energy to chief energy is introduced.

分析了发动机缸盖振动信号的频域特性，在此基础上，对发动机气门漏气故障的振动诊断机理进行了研究，提取高频能量与总能量之比E_h／E_w作为特征参数来实现气门漏气故障的检测。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。