查询词典 vibration-proof

Wind-induced vibration Fluid-structure interaction Added mass Aerodynamic damping Critical wind velocity

风致振动；流固耦合作用；附加质量；气动阻尼；临界风速

The four varistors form the Wheatstone full bridge. Two lateral sides of cantilever and overload protection structure are fabricated using DRIE technology. A novel overload protection curvature is designed to be similar to the cantilever bending shape which is bearing the greatest acceleration. This design increases the overload protection and improves the vibration damping of accelerometer to the critical damping.

悬臂梁两侧面和过载保护曲面采用DRIE技术加工，过载保护曲面设计成近似于冲击加速度传感器承受最大加速度时悬臂梁弯曲曲面的形状，一方面提高了悬臂梁过载保护能力，另一方面可以调节加速度传感器的工作阻尼至临界阻尼，有效提高了加速度传感器的工作频率带宽。

Some methods which are about how to get natural frequency, the computational and experimental methods of the vibration modes, and the computational methods of the critical velocity and the analysis of stability are included.

进一步探讨了圆锯片的振动特性，包括圆锯片固有频率的获得方法，振动模态的实验与理论计算方法，临界速率的计算方法以及稳定性分析等。

It is showed in wind-vehicle-bridge system vibration analysis that cross wind action can remarkably increase the response of bridge and vehicle. Generally, the response of bridge and vehicle are increased with wind speed and train speed, one case that vehicle is on leeward side of deck is more unsafe than another case that vehicle is on windward side of deck. Nonlinear factors can more influence bridge than vehicle.

风—车—桥系统耦合振动分析结果表明：考虑风的作用会显著增加车辆和桥梁的响应；车辆和桥梁的响应总体上随风速和车速的提高而变大；车辆位于桥道背风侧时较迎风侧时更为不利；非线性因素对桥梁的影响较车辆的要大。

At last, the whole model including the cross beam and the supporting cylindrical shell is modeled and computed to evaluate vibration damping performance.

最后建立了井字梁与圆柱壳的整体有限元模型，进行了对整体模型的粘弹阻尼减振分析计算。

Then, the cross beam with I-section is modeled and calculated by considering different damping depths in order to analyze which depth can lead to a better vibration control effect.

然后，针对几种不同铺设深度的情况对复合材料井字梁进行了建模分析，对比得出了较佳的阻尼铺设位置。

In the first session the fans vibration on-line monitoring system is realized with VC language, also compile auto power spectrum density function, cross power spectrum density function, autocorrelation function and cross correlation function etc spectral analysis function to carry through simple offline fault diagnosis.

首先用稳定性强、扩展性好的VC++语言开发了通风机振动在线监测系统，并编写了自功率谱密度函数、互功率谱密度函数、自相关函数和互相关函数等频谱分析函数来进行简单的离线故障诊断。

Based on random signal theory, in order to quantitatively research drilling string by vibration measurement method, the article sketches out a new methodthe identification of drillstring system using the cross correlation function. Using input signal, and output signal, the impulse response of drill-string is obtained. Some problems...

在随机信号理论基础上，提出了一种用互相关辨识钻柱系统的新方法；结合输入信号和输出信号，利用钻柱系统的脉冲响应，讨论了钻柱的临界转速、钻柱共振、钻柱与井壁之间的相互作用、所钻地层岩性等钻井工程问题。

The coupling stiffness and damping coefficients of the thrust bearing under the crosswise vibration of the rotor were studied.

对推力轴承在转子横向振动下的偶合刚度和阻尼系数进行了系统的研究。

Methods Study the affect of the mechanical vibration on the property of rock and crud oil in experiment.

通过室内实验，研究了机械振动对岩心和原油性质的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。