查询词典 rolling friction

The effect of the friction between rolls and ring can be ignored and the effect of the spread velocity of rolling on the deformation of ring is illustrated.

通过模拟分析比较，揭示出了环件轧制过程中的金属流动规律：轧制时，环件外侧的变形最大，厚向中心部位变形最小，内侧的变形程度介于中间；环件内外环面的压应力分布和变化规律：在垂直于环件轴线的对称面上，压应力分布近似对称状态，而且在对称面上的应力最大，往端面方向开始减小；指出了环件轧制中轧辊与环件摩擦对环件成形的影响：对于环件的宽展变形，摩擦的影响很小，可以忽略；分析了环件进给速度对环件成形的影响并阐述了环件厚向中心部位凹陷产生的原因，提出防止凹陷的措施：在轧制时，尽量使用快的进给速度有利于防止端面凹陷的产生；研究了导向辊位置对环件成形以及轧辊受力的影响：导向辊的位置对环件的宽展变形影响很小，但对轧辊的受力影响较大，当导向辊的中心位置位于毛坯初始中心位置之上时，驱动辊和芯辊的受力相对较小，这是导向辊导向时优先考虑的位置。

The results show that the side wall angle is the major factor, the influence of the friction coefficient between the roller and the tube billet on the external diameter ovality and the wall thickness unevenness is secondary, and the influence of the ratio of side wall radius on the rolling force and the wall thickness unevenness is the least.

结果表明：侧壁角是最重要的影响因素，管坯和轧辊间的摩擦因数对外径椭圆度和壁厚不均的影响居于次位，侧壁半径比对轧制力和壁厚不均的影响最小。

In order to study the effects of cold-rolling deformation on damping characteristics of TiNi alloys and the relationship between the damping characteristics and the microstructure, the damping characteristics of martensite for Ti_(50)Ni_(50) alloy have been investigated systematically by DSC, TEM, DMA and sound internal friction test.

为了探讨冷轧变形对TiNi合金阻尼特性的影响，及TiNi合金马氏体的阻尼特性与组织结构之间的关系，采用示差扫描量热分析、透射电镜分析、动态机械分析和音频阻尼测试方法，系统研究了冷轧变形后Ti50Ni50合金马氏体的阻尼特性。

Addressing the effect of mandrel moving speed and mandrel friction on continuous seamless tube rolling process,a three dimensional elastic-plasticity thermal-mechanical coupled simulation is conducted with a non-linear FE analysis software named MSC.

用非线性有限元分析软件MSC Marc/Superform对连轧管芯棒速度及其摩擦系数对轧制过程的影响进行了三维弹塑性热力耦合模拟仿真，得到了芯棒速度及其摩擦系数对轧制过程力能参数及变形参数间的影响规律。

This article discusses about how to fix the position of rolling stock wheelsets onto the underfloor wheel lathe and analyses the positioning principles and characteristics of the friction driving roller s based on the underfloor wheel lathe manufactured by SCULFORT.

结合法国SCULFORT公司生产的数控不落轮机床，就机车车辆轮对在不落轮机床上的定位方法展开论述，分析其摩擦驱动轮的定位原理及其特点，并结合其它不落轮机床的定位结构形式进行了综合比较。

Built-run organizations to adopt the engineering plastics with Rolling Wheel, friction small, brisk walking, and the structure of small size, will help improve the vertical hook trip.

内置式行走机构采用带滚动轴承的工程塑料滚轮，摩擦力小、行走轻快，且结构尺寸小，有利于提高吊钩的垂直行程。

Because on chain link''s roller and the track are by the rolling contact, the friction drag is small, the power loses lowly, and may the load bearing heavy load capacity.

由于链条上的滚子与轨道是以滚动接触，摩擦阻力小，动力损耗低且可承载较重的荷重。

Further more, because the friction force between needle and tissue is greatly dependent on muscle contraction, the excitability of the tissue near the stimulated point can be evaluated by measuring the interval between the start and stop of the needle rolling.

又由于针刺作用下肌肉的反射性收缩极大地影响了组织和针之间的摩擦力，所以测量从刺激开始到针停转所需的时间T〓还可以估计刺激点及其附近肌肉的兴奋性。

A major advantage of rolling-element bearings is low starting friction.

卷元素方向的一种主要的优势是向下起始的摩擦。

Rolling force is the important parameter for skew rolling process design of anchor rod .

轧制力是斜轧锚杆工艺设计的重要参数，轧制力的变化受到各工艺参数的影响。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。