查询词典 sliding friction

Based on the sliding response theory of the free-standing equipment, the differential equation of motion of the free-standing equipment under seismic excitations is presented. The equation is solved by Runge-Kutta algorithm, therefore the absolute acceleration, relative velocity and relative displacement of the equipment can be obtained. The sequential coulomb friction model is applied to the analysis.

以前人研究建立的浮放设备滑移反应分析理论为基础，给出了浮放设备在水平和竖向地震输入下滑移反应运动微分方程，选取连续型的库仑摩擦力模型，采用Runge-Kutta法求解浮放设备地震滑移反应运动微分方程，可以得到浮放设备在地震作用下的绝对加速度、相对速度和相对位移反应时程。

Apart from these, another conclusion was drown by the author that the increase of surface energy due to the deformation after the adhesion shearing at the asperities and the viscoelasticity of polymer films is the main reason why the friction coefficients of polymer films vary with the sliding speed.

还有一条重要研究结果是，作者认为，由于聚合物薄膜受摩擦作用而发生变形以及由于聚合物的粘弹性造成变形回复的滞后而造成聚合物表面能的增大，是聚合物摩擦副的摩擦系数随相对滑动速度的变化而变化的根本内因。

Further study of this paper has shown that reason for"camel peak"phenomenon in the adhesion-creep test curves is difference between sliding-and static coefficient of friction and discussed the analytic formulae for line contact as well as one direction slip and special correction Lemk's method for point contact when their change is considered as stage jump function.

通过进一步的理论研究指出造成轮/轨粘着率与弹性滑移率实验曲线呈"驼峰"状的原因是滑动区和粘着区的动、静摩擦系数变化，给出了当它们为阶跃变化时线接触条件下的解析解和对点接触情况的独特的"修正"Lemke算法。

The paper implements a study about some factors having influences on the bending behavior of externally prestressed concrete simple supported bridges .these factors include the change of PPR、 the change of match tendon rate、 the change of static friction coefficient and the sliding one, the reasonably scope of these parameters value is given.

4以整体施工的体外预应力简支梁为研究对象，利用自编程序就预应力度、截面配筋及转向块与体外筋的相对滑动等参数对体外预应力梁受弯性能的影响进行了分析研究，给出了这些参数的合理取值范围。

It is found that the friction coefficient increases with the increase of sliding velocity, and there is critical velocity.

试验发现，摩擦系数随滑动速度的增加而增加，存在临界滑动速度。

In the analysis, firstly, the flux boundary condition is used to simulate the frictional heat resource between wheel and rail. The non-steady heat transfer between the contacting surfaces of the wheel/rail, heat-convection and radiation between the wheel/rail and the ambient were all taken into consideration. Therefore, a heat coupling model of the wheel/rail in rolling/sliding is put forward to calculate the frictional temperature rise in the wheel and rail. Secondly, after the temperature distribution of wheel/rail, due to friction, is calculated, substitute the thermal load with equivalent fictitious body force and boundary distributed force loaded on the nodes of the corresponding elements. The wheel-load is applied to the center of the wheel.

首先，用热流边界条件模拟轮轨接触界面的摩擦热源，考虑轮轨间的非稳态热传导、轮轨自由表面与环境的热对流、热辐射的影响，建立轮轨滚动接触热耦合有限元计算模型，分析计算轮轨滚、滑工况下的摩擦温升；其次，以求得的轮轨温度场结果作为求解轮轨应力场的已知条件，轮载以集中力形式直接加载于轮心处，将摩擦温升引起的热载荷等效为假想体力和热边界面力，施加于相应的单元节点上，建立了轮轨热—机械载荷耦合作用的热弹性平面应力模型，分析热—机械载荷作用下的轮轨应力场。

The influence of backlash and friction is compensated based on a compound controller formed by radial basis function neural network and sliding mode.

采用径向基函数神经网络和滑模拉制构成复合控制器，对系统齿隙、摩擦非线性因素进行了补偿。

First, the plant and the dynamic model are derived and analyzed. Next, PID controller, adaptive fuzzy controller and adaptive sliding mode controller are established and linear guide produce friction is compensated by Tustin model. From simulation and experiment results, possible implementation, and satisfactory performances, and have been demonstrated.

首先，我们先设计与实现定位系统受控装置并且对其建立与分析系统之动态模型，而后则分别建立PID控制器、适应模糊控制器与适应滑动模式控制器并且对滑轨之摩擦力作补偿设计。

In this paper,the non-linear factors,such as spring torque,friction,intake resistance and gear clearance,are considered during the derivation of ETS model.Five controllers are designed in Matlab/Simulink,using PID,fuzzy,sliding model contro...

本文在考虑弹簧扭矩、摩擦力、进气阻力、齿隙等非线性影响因素的基础上，建立ETS系统数学模型，应用PID、模糊、滑膜及其相结合的控制理论在Matlab/Simulink下设计了5种控制器，并对其阶跃响应特性进行比较分析。

The main identifying characters of wear particle on the ferrogram such as dimension,distribution,quality,component and form of the wear particle were generalized for the three friction couples of gear case including gear,bearing and sliding contact which is in the different phases of running-in wear,normal wear and abnormal wear and in the different degrees of overload,over-speed and fatigue.

介绍了铁谱分析的原理、样品的制备方法和铁谱分析的步骤，概括了齿轮箱齿轮、滚动轴承、滑动接触3种主要摩擦副在磨合磨损、正常磨损、异常磨损3个阶段的磨粒的主要识别特征，包括尺寸、尺寸分布、数量、成分和形貌等。

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。