阻尼力

Then the numerical simulation is developed with the above dynamic model. The effects of the clearance on the dynamic characteristics are studied in detail. The influence of factors such as clearance size, driving speed, stiffness, coefficient of viscous damping of contact surface, and the gravity are discussed and the quantitative results are given.

利用本文建立的动力学模型对含间隙三球销移动副的曲柄滑块机构进行了动力学数值仿真，研究了运动副间隙对机构的运动和受力状况的影响，考察了间隙大小、曲柄转速、接触刚度、阻尼、外力矩等对机构动态特性的影响规律，给出了定量结果。

Inverted front forks are fully adjustable for compression, rebound damping and spring preload to suit rider preferences

倒立前叉子是完全可调的压缩，回弹阻尼和弹簧预紧力，以适应骑手优惠

Using the models, the author has also calculated the vibration response to high speed railway vehicles of three types travelling over simply-supported beam bridges with various span lengths respectively. Based on the analysis of the computation results, the concept of resonance velocity of a bridge under a high speed running vehicle is present, and it is pointed out that comparatively great vibration of bridges on high speed railways is caused by bridge resonance resulted from the static force pulsating. In a vehiclebridge coupling vibration system, the damping constant of the axle spring is the main factor affecting the response variable of bridge velocity resonance, and the influence of track irregularity on bridge vibration on high speed railways is rather smaller.

利用所建立的计算模型，计算了三种形式的高速铁路车辆通过各种跨度简支梁桥结构时的振动响应，对所得到的计算结果进行了详细的分析，提出了高速行车下桥梁共振速度的概念并指出高速铁路桥梁产生较大振动的原因是静力脉动引起桥梁共振造成的；通过研究车—桥耦合振动系统方程的参数后指出，在车—桥耦合振动系统中，车辆—系阻尼的大小是影响桥梁速度共振时响应大小的主要因素，轨道不平顺对高速铁路桥梁振动的影响较小。

The spectra indicated that the structural parameters, such as natural frequencies of bodies, damping, distance among structures and time lag due to ground motion, may affect the peak value of collision force.

响应谱表明：结构参数，如固有震动频率、阻尼、结构间的间隔距离、地面运动引起的时间滞后等，都会对碰撞力的峰值产生影响。

Clay; Constitutive Model; damping ratio; Masing's rule; Cyclic simple shear testing

粘土；恢复力模型；阻尼比；Masing准则；循环单剪试验

In the paper, the simulation model of port plate/cylinder block frictional pair in which the lubricating film forms was established according to force balance equation and flow continuity equation with SIMULINK of MATLAB. The frictional pair includes of damp groove type continuous oil supply port plate /cylinder block frictional pair and semi-perimeter double oil groove type periodical oil supply port plate /cylinder block frictional pair.

本文根据配流副数学模型中的力平衡动态方程和流量连续方程，利用数学仿真软件MATLAB中的SIMULINK工具包分别对阻尼槽型连续供油配流副和半周槽双油腔间歇供油配流副建立了润滑膜形成的仿真模型，并对不同工况下的这两种配流副润滑膜的形成及变化规律进行动态仿真研究。

Trough-shaped face mask compared with net rodded SONY Trinitron mask, in the middle rack of the addition of many of the small horizontal grid, which makes network face mask of power and stability of the situation better, thus eliminating the use of SONY Trinitron picture tube rack as the support network of surface structure and the fine had to add damping.

槽状荫罩网面比起SONY特丽珑栅状荫罩来，在栅条中间又多了许多细小的横格，这使得荫罩网面的受力及稳定情况更好，从而免除了使用SONY特丽珑显像管栅条结构为支撑网面而不得不添加的阻尼细线。

Reasonable pedestal damp trims the function of wave height of force, rock and pedestal displacement than can rising to reduce base.

合理的支座阻尼比可以起到降低基底剪力、晃动波高和支座位移的功能。

The parameters of the model are researched, and the Amplitude-frequency Curves under various damping ratio and under various exciting-vibration force are compared respectively.

另外，还对该模型进行了参数研究，分别比较了在不同阻尼比和不同激振力情况下的脉冲对系统幅频曲线的影响。

Compress the suspension over large jumps and the rocker geometry progressively increases the spring force and shock damping.

压缩暂停大跳跃和摇臂几何逐步增加弹簧力及休克，阻尼。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。