查询词典 dynamical friction

Treating with coils as aeolotropy, this paper brings forward a set of mathematical mode for computing internal stress distribution of coil in the process of coil coiling, in which some factors are taken into account, such as the transverse distribution of shape, crown and curl tension of the strip, the friction between the strip and the reel, the friction between strips, and etc. Because the reel shrinkage and the inner circle of the strip losing radial restrain and circumferential restrain can induce interlayer slipping and the change of the whole coil compactedness , the assumption concerned ——"virtual reel" in the process of coil uncoiling is put forward, which takes the form of slow action to express the uncoiling process and, therefore clearly simulates the variation course of internal stress distribution of coil in the process of coil uncoiling.

考虑到带材板凸度、卷取张力的横向分布以及带材与卷筒之间、带材与带材之间的摩擦力等因素的影响，并将钢卷按各向异性体处理，提出一套计算卷取过程中钢卷内部应力分布的数学模型；同时考虑到卸卷过程中由于卷筒的收缩，钢卷内圈失去径向和周向约束而引起层间滑移及整个钢卷紧密程度发生变化，提出钢卷卸卷过程中有关&虚拟卷筒&假设，将卸卷过程以&慢动作&的形式表示出来，清楚地模拟出卸卷过程中钢卷内部应力分布的变化历程。

It is clear that when the book was attached to the multifraction run and electro-optical control at run time, motor brake is frequently used for closing the case of separation action, so that, if the brake friction wheel every time suck-journeyuva or slightly slightly the lawyers'gowns so that it tends to concentrate on local contrate friction to the corresponding axis wheels, and an increase in the work of the resistance of the motor, which in turn lead to a book should be sent along to run slowly.

很较着，当书夹在独不宾运行和光电把持运行时，电机的制动器是在屡不主息呼分别离动息的环境下举行的，这样，当制动器上的摩擦轮每不宾呼分的旅程稍有不到位或稍有方向时，不离便当使其方向的部分端面摩擦到对应的轴轮上，而补充电机的工息阻力，进而引起书夹运行速率减缓。

A friction compensation algorithm based on the feed-forward and fuzzy theory is implemented after analyzing the friction characteristic of HIT-1 dextrous robot hand.

在基于指尖力的阻抗控制中，定性分析了摩擦力对自由空间中的位置跟踪和约束空间中的力控制的影响，并结合HIT-1机器人灵巧手摩擦力的具体特点，提出了前馈加模糊的摩擦力补偿方法。

Cu-C composite is one of the most potential materials for pantograph slide plate, which is an important component of pantograph system in locomotive. The principle of wettability between Cu and C was investigated in this paper. The element of Mo was selected to improve the wettability between Cu and C. The fabrication process of cold compression sintering fiber reinforced Cu-C composite and its effect on the composite property were studied. The wear and friction mechanism of Cu-C composite was investigated initially by electriferous friction test.

Cu-C材料是目前最具应用前景的电力机车受电弓滑板用材料之一，本文研究了Cu与C之间的润湿原理，利用Mo元素有效改善了Cu与C之间的润湿性；并对冷压烧结法制备纤维增强Cu-C复合材料的工艺过程及其对性能的影响进行了研究；通过带电摩擦试验对Cu-C复合材料带电摩擦磨损机理进行了初步探讨。

By designing different test rigs, choosing different friction materials and performing a large amount of tests, the property of friction with respect to the variation of normal loads, relative velocities and lubricational conditions is examined.

通过设计不同的测试装置，采用不同的摩擦材料，通过大量的实验，测试并分析了摩擦力随接触界面间正压力、相对速度、润滑状态变化的情况，研究了摩擦力在预滑动和宏观滑动阶段的静态及动态摩擦特性，发现并提出摩擦过冲概念。

Friction composite, hBN, CPC, friction and wear behavior, lubricative films

煅烧石油焦及六方氮化硼对摩阻材料摩擦磨损性能的影响。

On the other hand, the less the friction factor of a collision-related fracture zone, the stronger the subduction and obduction movements between two continents, and the friction factor should not be larger than 0.2 so as to be able to form a high mountain and a deep basin by the collision between two continents.

碰撞断裂带摩擦系数越小，碰撞过程中两个大陆板块之间相对俯冲和仰冲作用越强，形成高大的山脉和深陷的盆地要求碰撞断裂带摩擦系数≤0.2。

If lack of oil or oilway jam, wall panels inside voice will increase was mainly driven by increasing friction surface friction parts.

如果残油或油路畅通，墙板里背的不韵音不离会加不小，宾给是部件摩擦背的摩擦力加不小变成。

In this paper, using Dragon's constitutive equation and the proposed friction-induced plasticity theory in this paper, a more simple coupling model on elastic damage and friction -induced plasticity is presented for rocklike materials. An example for validity is given and shows the agreement with Dragon's results.

利用该模型，与本文的摩擦塑性理论相结合，建立了一个新的更简单的岩石类材料摩擦塑性与弹性损伤耦合模型，通过考核算例表明，该模型给出的结果与Dragon等人的结果是一致的。

In the dry sliding experiments of composites, friction coefficients decreased with the increase of load. Plastic deformation happened in the worn surface where Fe element was found, so PAM micro-fiber supported part of the load and prevented the further deformation. On the condition of high speed and high load, the worn surface of PAM1/nylon 6 composites was nearly melted and formed comparative uniform transfer on the surface of steel, which accounted for the rather low wear mass loss. The infrared analysis showed that the a small quantity of transition of crystal form from α into γ of nylon and its composites happened during the friction because of the high temperature and strong sheering strength.

通过对复合材料耐磨性能研究表明：复合材料的摩擦系数随载荷的增加而逐步下降，且磨损表面有明显的塑性变形；从能谱分析结果来看，复合材料表面有Fe的存在，表明PAM微纤承受了部分载荷，并阻止了基体的进一步塑性变形及粘着转移；在高速高载时，PAM1/尼龙6磨损表面处于粘流态，并在钢环表面形成了连续的转移膜，表现出较好的耐磨损性能，且在高温和强剪切力的作用下，材料基体发生了少量的α晶体向γ晶体的转移。

Smoking cigarettes adds to the Computer Desk Computer manufacturer computer mouse Computer Computerized collar knitter machine Conduit Bodies construction board Container Bag Control Arm Cooking Thermometer general levels of air pollution as well as damaging our health.

吸烟不仅对健康有害，而且增加空气污染程度。香烟雾含有多种有害物质：不仅有致癌化学物质、有某种能阻止氧气进入血液的气体，还有引起血压增高、心速加快的被称为尼古丁的物质。

He is one of my favorite actors.

他是我最喜欢的男演员之一。