摩擦

The weldability and mechanical property of the friction welded joints of ductile cast iron and low carbon steel were studied.

通过试验研究了铁素体球墨铸铁与低碳钢异种材料的摩擦焊接头的组织性能，探讨了其摩擦焊接性。

Willson 11/8 non-conforming element is employed to overcome the excessive firmness of the retaining structure. And the pipe is simulated by plate and shell element or beam element. Interface element is adopted to simulate the interaction of soil-retaining structure.

土体采用八节点等参单元，围护结构采用Wilson11/8非协调单元，地下管线采用板壳单元和梁单元，用无厚度摩擦单元模拟围护结构与土体的摩擦边界；土体按土质进行分层处理，且考虑分步开挖。

The generator loss is composed of iron loss, bearing friction loss, bushing friction loss and windage loss.

发电机损失由铁损，轴承摩擦损失，套管摩擦损失和风阻损失组成。

The high temperature and high pressure experiments show that the strength of rocks is very high in earthquake source (mainly granitic rocks, such as adamellite), which could sustain great different stress and accumulate huge energy. This is one of major causes for high-angle reverse fault slip and high intensity of Wenchuan earthquake.

岩石破裂-黏滑-摩擦实验表明，以二长花岗岩为代表的震源区岩石具有很高的破裂强度和摩擦强度，能够承受极大的差应力和积累巨大的能量，这是高角度逆断层能够滑动和汶川地震强度大的原因之一。

It was found that the mechanical properties of the joints decreased by the alclad and it will be increased dramatically by removing the alclad. The effect of alclad on the bottom surface is larger than on the top surface. The mechanical properties of 2024-T3 joints will fall down because alclad is entrapped into the welded joints by the rotating and stirring tools during the friction stir welding, similar with "inclusion" in fusion welding.

研究结果表明，包铝层的存在明显降低了2024-T3铝合金搅拌摩擦焊接头的力学性能；去掉包铝层后接头的性能显著提高；下表面包铝层对接头性能的影响大于上表面包铝层；当2024-T3铝合金表面带有包铝层进行搅拌摩擦焊接时，在搅拌头的旋转和搅拌作用下，包铝层被卷入焊缝中，形成类似于熔焊的&夹杂&，从而使得接头的力学性能下降。

It shows that under the same conditions, the wear loss of the sample deposited AlTiN was 1.2% of the substrate, and the friction coefficient was 0.007. A significant approach to the mechanism of the properties is discussed with the aid of SEM, EDS and XRD.

结果表明，相同条件下，经沉积AlTiN涂层的试样磨损量仅为基材的1.2%，摩擦系数仅0.007，表现出良好的杭磨损特性；并用SEM、EDS、XRD等，对涂层的生物摩擦磨损性能进行了分析。

An AlTiN ceramic coating was deposited on the surface of biomedical Ti6Al4V alloy by High Ionic Pulse technology. The properties of biofriction and wear of AlTiN coating in simulated serum lubrication at 37℃ were investigated and compared with that of non-coating Ti6Al4V alloy.

采用高度离子化脉冲工艺在医用钛合金Ti6Al4V表面制备AlTiN涂层；在摩擦磨损试验机上测试了涂层在37℃的模拟人体生理血清液润滑条件下的摩擦磨损性能，并与之和未经涂层的Ti6Al4V合金作比较。

The invention relates to amianthine cat whisker-free friction material and the preparation method thereof, and belongs to the friction material industry technical field.

一种无石棉晶须摩擦材料及其制备方法，属于摩擦材料行业技术领域。

Taking the multi-rope friction hoisting as researching object,the theoretical analysis is given out for the dynamic antislip safe coefficient .

以多绳摩擦提升机为研究对象，对其动防滑安全系数进行理论分析，指出影响的因素，并结合实例应用MATLAB语言进行计算机仿真，作定量说明，从而提出增大多绳摩擦提升防滑安全系数的合理措施，对矿井安全生产具有指导性作用。

The frictional heat energy was concentrated on the thermal effect layer with the thickness of 4 mm, The temperature gradient of contact surface is the highest, and decreased rapidly with the radius direction of the lining's groove. The temperature gradient and TEL's thickness increased with the increasing of the sliding speed. The temperature decreased rapidly with the radius direction and also with the increasing of center angle of the lining's groove. The sliding speed and distance are obtained under two sliding conditions when the lining fails, which supply the theoretical basis with the antislip design of friction hoist.

摩擦热量集中在热影响表面层，其厚度仅为4mm，接触表面温度梯度最大，沿绳槽径向迅速减小；温度梯度和热影响表面层厚度随相对滑速的增大而增大；衬垫温度沿径向急剧降低且随圆心角增大而减小；并得到了2种滑动工况下衬垫失效时的相对滑速和滑动距离，为摩擦提升防滑设计提供理论依据。

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。