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1)  constant area duct with friction
等截面摩擦管
1.
Considering the friction of duct wall to gas-particle flow and choking phenomena, a mathemati cal model is developed describing the behavior of gas-particle flow passing through constant area duct with friction,with a critical duct length determined by Mach checkout method.
考虑管壁对气粉两相流的摩擦阻力作用和壅塞现象建立了等截面摩擦管中气粉流的数学模型,并用马赫数检验法确定了临界管长。
2)  tube with uniform section
等截面管道
3)  worn surface
摩擦面
1.
Study on the worn surfaces of C/C composites at various braking velocities;
不同制动速度下C/C复合材料摩擦面研究
2.
Optical microscope and scanning electron microscope techniques were used to characterize the microstructures and the worn surfaces.
无论何种材料,当摩擦系数峰值出现时,距摩擦面1mm、外径3mm深处的温度均显示在250℃左右。
4)  interfacial friction
界面摩擦
1.
The interfacial friction behavior between the prepared films and molten glass was experimentally studied at 850 ℃ using a self-made high temperature interfacial friction testing device.
使用多弧离子镀设备制备了AlTiN,CrN,TiN,ZrN薄膜,在850℃条件下,利用自行研制的高温界面摩擦试验装置对上述薄膜与熔融玻璃之间的界面摩擦行为进行了试验研究。
2.
A method to calculate interfacial friction force with composite oscillator model was discussed,and the formulas used in calculation were derived.
以光滑界面摩擦为研究对象,探讨用复合振子模型计算纳米尺度滑动摩擦力的原理和方法,推导出滑动摩擦力和摩擦因数的计算公式,并用原子力显微镜探针在硅试样和云母试样上做扫描实验进行验证。
3.
The recent progress in fundamental study of friction, including molecular dynamics simulation of superlubricity, interfacial friction testing, commensurate theory on the origin of friction, and the investigation of energy dissipation during friction process, is reviewed.
评述了近年来关于摩擦现象基础研究的进展与成果 ,包括超滑的分子动力学模拟 ,界面摩擦试验 ,表面微观结构的相称性理论以及摩擦的能量耗散过程等 。
5)  friction surface
摩擦表面
1.
The morphology and graphitization of carbon at friction surface were investigated by SEM and micro-Raman spectroscopy respectively.
采用MM-1000型摩擦磨损试验机评价粗糙层基体炭C/C复合材料在模拟正常刹车条件下的摩擦磨损性能,借助扫描电子显微镜、微区拉曼光谱仪和红外光谱仪分别研究复合材料摩擦表面的形貌、微区石墨化度及其结构,并通过热失重曲线比较摩擦前后复合材料表面在惰性气氛中的升温失重。
2.
Fractal characteristics of dry sliding friction surface of Fe_3Al-based composites were investigated using structure function analysis method.
利用结构函数法对Fe3A l基复合材料干滑动摩擦表面的分形特性进行了研究,并计算其分形维数。
3.
Fractal theory is introduced to study friction surface.
引入分形理论来研究摩擦表面 。
6)  skin friction
表面摩擦
补充资料:摩擦学:滚动摩擦
滚动摩擦
两相互接触的物体有相对滚动或有相对滚动趋势时的摩擦。滚动摩擦的机理不同於滑动摩擦﹐它主要来源於滚动体在接触区域產生弹-塑性变形﹐在以接触点(或线)为中心的接触区内接触压力分布不对称﹐致使支承面的反力N 发生偏心﹐并產生摩擦力F (见图 滚动摩擦示意图 )。用表示法向反力N 到接触点的距离﹐根据力的平衡条件可得
        
        式中为滚动体半径﹔为滚动摩擦係数﹐它的量纲为长度﹐其值与接触面的材料﹑粗糙度﹑温度和湿度等因素有关。
  
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