阻尼振动

Afterward, vibration equations of bundle conductors system which consider the effects of spacer dampers are derived(including transcendental function and plural), the vibration frequencies and modes of bundle conductors system are got by solving the transcendental eigenvalues of these equations. Then the amplitude ratio of each spacer dampers to sub-conductors are got, so bundle conductors can be exactly solved with the application of energy balance method as single-conductor.

然后，推导出了考虑阻尼间隔棒阻抗影响的分裂导线体系的振动方程组，通过求解超越特征值得到分裂导线的振动频率和模态，得到各间隔棒、各段子导线的振幅比，从而使分裂导线可以象单导线一样应用能量平衡法进行精细求解。

After the action of an initial disturbance, the vibration of a system around its equilibrium position under the action of only a restoring force is called an undamped free vibration.

物体受到初干扰后，仅在系统的恢复力作用下在其平衡位置附近的振动称为无阻尼自由振动。

The distribution of gear's contact stress, root stress, and contact engagement line in the engagement situation of gear pairs, were obtained on the base of explicit integration method. 3. Adopting the method of system matrix, the torsional vibration differential equation of general shafting was gained. The simple harmonic forms of excitation torque under the normal combustion or piston flameout of in-line engine and v-type engine were analysed. The decoupled algorithm of free vibration and forced vibration and the solution to the vibration damper's energy of resistance and the off-resonance calculation were studied. The sensitivity formulations of the natural frequency and vibration mode to physical parameters of system were derived by solving the eigenvalue problem. These sensitivity formulations provided the theoretical base for the dynamic modification of structure.

运用系统矩阵法建立了轴系的扭振微分方程，并对直列和V型发动机在正常发火和气缸熄火工况下的激振力矩进行了详细的简谐分析；基于精确方法推导了自由振动和强迫振动的解耦算法，给出了能量法计算中的减振器阻尼功求解和非共振计算方法；并研究了曲轴系扭振非线性分析中的变惯量问题，得到了单缸转动惯量的精确求解公式以及变惯量和固有频率的关系式；最后，从特征方程和振型正交性出发，推导了固有频率和振型对轴系转动惯量和刚度等物理参数的灵敏度，为扭振系统的结构动力学修改提供了理论基础。

In order to remove the unsteady run for moter caused by its vibra ation,applying the ER damping technique,the author solved the problem that the amplitudes of the motor viberaton would diverge because of the negative damp during its travel,so as to improve the steadiness for the motor to run.

为了解决摩托车振动导致的行驶不稳定，应用电流变减振技术，解决在行进过程中出现的等效阻尼为负值，致使振动振幅发散的问题，改善了摩托车在行驶时的平稳性

On the basic of the machine s structure,the mechanical model of damp dynamic multi-degrees freedom is built,the system parameters are analysized and determined. Theory of that the continuous conveyer of disc-tube assembly is a type of nonlinearity multi-degrees freedom vibration is proposed and prove...

根据输送机的结构建立起输送机有阻尼多自由度振动的力学模型，分析确定了系统参数，提出并论证了串联盘输送机是一种非线形多自由振动系统的理论基础。

In tested frequency range, the damping ratio keeps constant under different vibration frequency, which is verified again that the concrete is not the ideal sticky elastic material whose dissipation characteristic is correlative with frequency.

在实验的频率范围内，不同振动频率下的阻尼比近似保持常数，再次证实混凝土并非耗能特性与频率相关的粘弹性材料；砼构件的动刚度随振动频率变化不大，表明其力学参数无明显频变特征。

In the paper,the equations of motion for the vehicle_bridge_MTMD system are presented and the effectiveness of suppressing the transverse vibration of the deck steel plate girder bridge with multiple tuned mass dampers is investigated by the field test and simulated calculation.

本文建立了车-桥-MTMD系统振动方程，对利用多重调频质量阻尼器抑制铁路上承钢板梁桥横向振动的效果进行了模拟计算和现场试验。

Pressure gauges shall be safety pattern and shall be liquid filled or furnished with pulsation dampeners for pulsating services including pump discharge and compressor applications.

现场压力表应是安全型并应是充液或配备用于振动工况包括泵出口和压缩机应用的振动阻尼器。

The panel assembly further includes a plurality of stud pins embedded into the side-wall of the panel, a spring positioned between the shadow mask frame and the stud pins to interconnect them, and a vibration damping member for damping vibration of the shadow mask by converting mechanical stress applied to the shadow mask into electrical energy.

屏板组件还包括嵌在屏板侧壁内的多个销钉，置于荫罩框架和销钉之间以连接它们的多个弹簧，和通过把施加于荫罩上的机械应力转变为电能以阻止荫罩振动的振动阻尼元件。

Through laboratory tests on sandy pebble soil by using the dynamic triaxial tests,we studied the influence about dynamic modulus and damping ratio under the conditions of different vibration frequency and consolidation stress ration.

通过饱和砂卵石土室内动三轴试验，将不同振动频率对动模量和动阻尼比的影响进行了较为细致的研究，分析了饱和砂卵石土的动力特性随振动频率的变化规律。

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。