查询词典 damping

The values of stiffness and damping of hydraulic tappet are used in the two masses dynamic model.The results of calculation and measurement are identical fundamentally.

将测得的刚度值与阻尼系数值带入作者所建立的BN489Q汽油机液压挺柱配气机构二质量动力学模型中，计算结果与实测结果基本一致。

At first in the preliminary design this paper computes the linear damping coefficient of the viscous damper employed in this project using Composite Response Spectra approach, meantime, this paper proves that reducing the exponent of velocity of the piston can increase the magnitude of the dissipative energy, because of the viscous damper employed in the practical project character nonlinear behavior; next this chapter performs analysis and comparison between the building without and with the viscous dampers aforementioned when the building suffers from various Time Domain Response, from the angle of displacement, interstroy drift, velocity, interstory velocity, acceleration, energy, maximum axial force of the dampers and of the column etc., in order to prove that the incorporating the viscous dampers into the buildings has great superiority on enhancing its aseismic performance ; furthermore, this chapter also expatiates on diverse assembly form of the viscous dampers that results in the adverse impact on the internal force of the structural member in this building, on the ground of which this segment bring about the preference of the assembly form of the viscous damper; finally this chapter points out the sphere of application of the analysis and computation using Composite Response Spectra approach in design: it is available in well-proportioned stiffness structures and isn抰 available in the structures that contain weak story. It is recommendable, particularly, to incorporate the fluid viscous dampers into this structure that contain weak story to refrain earthquake and reinforce, such as the Central Hall of Shanghai Exhibition Hall.

首先使用了反应谱分析法设计出欲附设的粘滞阻尼器的线性阻尼系数，由于实际工程所用的粘滞阻尼器具有非线性的特性，故而笔者又证明了降低速度指数对提高粘滞阻尼器的耗能量的优势所在；接着分别从位移、层间位移、速度、层间速度、加速度、能量、最大阻尼出力和柱轴力等不同的角度对结构在附设粘滞阻尼器前后的时程反应进行了分析对比，籍此在实际工程中证明了附设粘滞阻尼器对于提高结构的抗震性能的优越性；再者，笔者还阐述了采用不同的粘滞阻尼器布置方式对结构中构件内力特别是柱轴力和基座竖向反力产生的不利影响，并在此基础上提出了布置方式的优选；最后，指出了反应谱法在设计中的适用范围：对于均匀结构反应谱法能够使用，而对于含有薄弱层的结构反应谱法并不适用；对于类似于上海展览馆中央大厅的含薄弱层的结构尤其值得使用粘滞阻尼器的方法进行抗震加固。

When autoloading,the stiffness coefficient and damping coefficient of the torsion spring have influence on ejecting force so as to affect the result of ejecting process.

自动装弹时，扭簧的刚度系数和阻尼系数会影响抛壳力的大小，从而影响抛壳过程能否顺利完成。

The feedback effect of viscous heating on fluid damping force is considered based on a three-parameter model and a dynamic model including a heat transfer and energy transformation equation is developed,and the state of heat balance of the damper is discussed.

主要针对长阻尼孔形式下的流体阻尼器进行分析，在三参数模型的基础上研究了流体粘性发热对流体阻尼力的反馈作用，从而建立了含热能转换与热交换的阻尼器的动力学模型，同时对系统的热平衡状态进行了分析。

A trapezoid specimen with a quasi-uniform stress field is developed on the basis of the traditional damping experimental equipment.

在传统阻尼实验装置的基础上，开发了具有准均匀应力场的梯形等强度梁试件。

Damping joints are designed to reduce the vibration of frame structures based on travelling wave formulation.

基于框架结构的行波动力学模型，设计阻尼铰以达到减振的目的。

With establishing dynamic model of gun system, the effects of stiffness and damping of the main parts, i.e. elevating mechanism, trail, and soil as well as the effects of parity of recoil mass and parity of trunnion position of firing stability are systematically studied.

在建立火炮动力学模型的基础上，利用虚拟样机技术系统地研究了高低机刚度和阻尼、大架刚度和阻尼、土壤介质刚度和阻尼、后坐质量偏心和耳轴位置偏心对火炮射击稳定性的影响。

Usually, the damping ratio and undamped natural frequency may be specified by the

通常，阻尼比和无阻尼自然振荡频率是由闭环系统一对主

Where is undamped natural frequency, is damping ratio.

其中： 称为无阻尼自然振荡频率，成为阻尼比。

The simulation illustrates that the system is stable and has the nice restraint under the condition that the stiffness and damping vary in the scope of 10 percent.

仿真结果表明系统的刚度与阻尼在10％范围内的变化时均能保证系统稳定并具有良好的振动抑制能力，提高了控制器工程实用性。

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％。