查询词典 sliding friction

Under dry and hydrothermal conditions, systematic experiments were conducted on constitutive parameters of frictional sliding of gabbro gouge. We obtained the coefficient of friction and velocity dependence as functions of temperature up to 615 C, with normal stresses of 200 MPa and 300 MPa.

在干燥和热水条件下对辉长岩摩擦本构参数进行了系统的实验研究，分别得到正压力200MPa和300 MPa条件下的摩擦强度和速度依赖性参数随温度的变化。

Figure 2 printing plate gaskets is higher than the 0.2 ~ 0.3mm hobber pillow, blanket below the occipital hobber 0.05mm, a2, B2 Department produces a smaller convex hull, of course, less friction and sliding, wear plates, no szlama and "" taping, fault-printing plates and high, less hierarchical dot gain, clearly, the life expectancy of the machine, the electrical power consumed less.

图2印版的衬垫矮于滚枕0.2～0.3mm，橡皮布矮于滚枕0.05mm，在A2、B2处爆发的凹包较小，当然摩擦和滑动也多，印版磨损较多，无不推不净和"杠子"障碍爆发，印版的耐印率矮、网不面放大多，条理纯楚，机械的寿命放大，电机耗电也多。

The main results of the investigation are as following:(1) Some important criteria for the design of multi-layer structure are acquired: the ratio of the layer thickness to the contact diameter should be controlled to a value about 0.8; increasing the number of the gradient layers and elasticity modulus of the top layer would benefit to the yield strength and the stress status at the interface.（2）By means of molecular dynamics simulations for a indentation and sliding process, it is discovered that dislocations of 45 direction to the surface occur in the surfaces layer, which is correspond to the direction of the plastic flows observed in the macroscopic continuous medium. The irreversible deformation caused by the dislocation and the atom piles at the surface are responsible for the irreversibility of the force response. They are also the main factors for the friction generation. The temperature and the indentation velocity have significant effects on the deformation behaviors of the material of the surface layer. The yield strength would increase obviously if the indentation velocity is greater than 10 m/s.（3）A method to evaluate the fracture toughness of coating by estimating the crack-density functionβof a Wicker''s indentation was proposed. Meanwhile a new surface treatment technology was developed using non-equilibrium plasma.（4）A MD-FE hybrid method and corresponding software was developed to analysis the tribological behaviors for multiplayer system.

研究主要内容和结果有：（1）得到指导梯度膜设计的几个准则：控制膜层厚度与接触半径比在0.8左右为宜；适当增加梯度层层数和顶层弹性模量，有利于提高抗屈服能力和改善界面处的应力状态；（2）通过对嵌入和滑动摩擦过程的分子动力学模拟，发现表层产生一个与宏观连续介质的塑性流动方向观测一致的45 方向位错；位错造成的不可逆变形和表面的原子堆积，是力的响应不可逆性的原因，也是构成摩擦力的主要因素；温度和嵌入速度对材料变形特性有显著的影响，当嵌入速度大于10 m/s时，屈服强度明显增加；（3）提出压痕裂纹密度系数β半定量判定膜层断裂韧性的方法；并开发出表面强化新工艺；（4）开发出分析表面摩擦学特性的MD-FE复合模拟方法和相应模拟软件。

It is seldom reseached the mechanism of highspeed and long-range. On the basis of detailed investigation on the Touzhai landslide, the author have expatiated on the environment condition, studied the moving characteristics of each stage, the laws of friction coefficient of the sliding surface in the set-out stage and the erodynamic effect in the short-range, analyzed the hydrokinetics mechanism of highspeed and long-range.

本文在去现场详细调查的基础上，阐述了头寨滑坡的环境条件，研究了头寨滑坡全程各个活动阶段的运动特征，通过试验研究了头寨滑坡启程活动阶段滑面高速摩擦的规律和近程活动阶段滑坡凌空飞行的空气动力学效应，从流体动力学的观点分析了头寨滑坡高速远程的流体动力学机理。

For sliding contact, the coefficient of kinetic friction Uk is defined as the ratio of the frictional force to the normal force

滑动接触时，动摩擦系数Uk的定义是摩擦力与法向力的比率。

The analytical model SAP2000 constructed for this study uses the exact same size as the steel structure used in actual experiments. As SAP2000 is an engineering structure used to design package software, we only need to input data of the various size, cross section of figured steel and material characteristic. We can further use the build-in link to simulate the motion behavior of spherical sliding isolators including the effective stiffness and the friction coefficient.

研究中所建立之SAP2000分析模型，其尺寸设计和实际试验钢构架完全相同，由於SAP2000软体是工程结构设计用之套装软体，因此我们仅需将钢构架各部位尺寸、型钢断面及材料性质输入即可，并且使用其内建隔震元素来模拟球面摩擦型隔震器之运动行为，其中包含有效劲度、摩擦系数等。

One object for another object's surface without sliding or rolling the rolling of the trend, as the two objects in contact with some compression in the deformation of the rolling and obstruction, called "rolling friction."

一个对象的另一种物体的表面无滑动或滚动滚动的趋势，因为两个物体接触一些压缩，在变形的滚动和阻碍，所谓的"滚动摩擦"。

He then compared the two to make contact with the sliding surface relative to the surface of one of the imposition of a shear force to overcome molecules between gravity and cut the actual contact area generated by contact, causing friction .

然后，他比较了两个好联系与滑动面相对表面上的一个强加的剪切力，以克服分子之间的重力和切实际的接触面积，所产生的接触，造成摩擦。

Applicable for lubrication of rolling and sliding bearings, and other friction parts of all kinds of machineries.

适用于各种机械设备的滚动轴承和滑动轴承及其他摩擦部位的润滑。

And although pricey, they are when sliding with less friction is desired.

尽管非常昂贵，但在低摩擦滑行时却是必需的。

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。