阻尼振动

The shroud dry friction damping factor is a dimensionless quantity which can be defined as the ratio of the sum of work done per cycle of vibration by all dry friction force at shroud interface to the peak strain energy of corresponding blades under the resonance condition.

干摩擦阻尼因子是一个无量纲量，它被定义为：在共振条件下，所有的凸肩干摩擦力在振动一周内所做功之和与对应叶片系统峰值弹性变形能之比。

This paper is focused on the vibrational energy dissipation theory of a new dry friction damper and its application to the heavy machinery .

探讨了一种新型耗能摩擦阻尼器的耗能原理及其在重型机械振动控制中的应用。

The structure of the elastic vibration damping are studied, thus creating a distributed parameter system, a new area.

对弹性振动结构阻尼作了研究，从而开创了分布参数系统的一个新领域。

The equation of heat conduction with surface effect is derived by applying the minimum principle of latent heat flux to describe the temperature distribution and reveal the size-dependence of thermoelastic damping in the form of energy dissipation during the vibration process.

由热流势原理导出了包含表面效应影响的热传导方程，描述了振动过程中温度的变化分布，揭示了热阻尼在表面效应影响下的尺度相关性。

The method of multiple scales was used to solve the Duffing equation, the solutions were used to analyze qualitatively the effect of boundary conditions, ratio of damp, external excitation, and ratio of inner radius to outer radius on the second-harmonic resonance of an annular thin plate.

用多尺度方法求此振动控制方程的3次超谐共振解和1/3亚谐共振解，并且定性地探讨边界条件、内外半径比、激振力和阻尼对环形薄圆板在这两种次谐共振下的动态响应。

In chapter one, by using Krasnoselskii s fixed point theorem, necessary and sufficient c...

第一章讨论了一类带阻尼项的高阶非线性中立型差分方程正解的存在性，利用Krasnoselskii不动点定理，得到了非振动解存在的若干充分必要条件，这些结果改进和推广了一些已知的结果。

Furthermore, the non-linear global stiffness matrix is updated in the time domain as the riser deforms.7, Potential relationship between the freely vibration and the forced oscillation has been investigated and a theory model is successfully constructed.

该理论模型可同时考虑到雷诺数和质量阻尼比对横向振幅幅值的影响，同时也再次证明雷诺数是影响涡激振动横向振幅的一个重要参数。

Therefore, the study for material damping of RC and CFST under forced vibration is urgent in theory and practice of seismic design and dynamic analysis of structures.

因此，钢筋混凝土和钢管混凝土受迫振动条件下的材料阻尼研究对工程结构抗震设计与动力分析具有重要的理论与实际意义。

Based Hamilton principle and Galerkin method, the equations of nonlinear vibration of SMA damper-cable system have been set up.

根据Hamilton原理，结合Galerkin法，建立了SMA阻尼器—拉索系统的非线性振动方程。

The acting force needn't to be monotonic or harmonic. A series of simulations of a fan blade with shroud system has been carried out.

基于解析模型和离散模型，本文分别采用频域法和时域法对凸肩阻尼叶片进行了受迫振动响应分析。

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。