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frictional coefficient
相关语句
  摩擦系数
    The results showed that the root-mean-square deviation (σ) in surface roughness has a significant effect on the critical scuffing load. There is an optimum σ, at which the surface scuffing load is maximum. Also, surface roughness has an effect on frictional coefficient and there is also an optimum σ, at which friction coefficient is minimum.
    试验研究表明表面粗糙度综合均方根值对滑动摩擦副的胶合临界载荷有较大的影响,表面粗糙度综合均方根值σ存在一个最佳值,在此σ值下,表面胶合失效临界载荷最高,同时还发现表面粗糙度对摩擦系数有一定的影响,对于摩擦系数,表面粗糙度综合均方根值σ也存在一个最佳值,增大或减少σ值,摩擦系数都将提高。
短句来源
    The change in friction pair temperature with changing load has same trend as that of frictional coefficient and temperature increases with increasing frictional coefficient.
    摩擦副温度和摩擦系数随载荷变化的规律是一致的,当摩擦系数增大,摩擦副温度会有相应的升高。
短句来源
    Besides enough mechanical strength, their materials must have high resistance to corrosion and wear, low frictional coefficient, because of the specific physical and chemical characteristics of water, which has high corrosion and low lubricating ability in contrast with mineral oil as working medium.
    相对矿物油而言,纯水的腐蚀性强、润滑性差,水压元件摩擦副材料除了要求足够的机械性能外还必须具有高的耐腐蚀、耐磨性和低的摩擦系数
短句来源
    the method of extracting feature parameters from the whole ferrogram is introduced in detail. The relation between the frictional coefficient and the feature parameter is studied. AR(p) model of the feature parameter is established and the prediction analysis is carried out.
    本文在单个磨粒特征参数获取的基础上,详细介绍了铁谱谱片磨粒特征参数的提取方法,研究了磨损过程中摩擦系数与磨粒特征参数的相互关系,建立了磨粒特征参数的时序模型并对磨损过程进行了预测。
短句来源
    The critical temperature which affects friction & wear of M50 high speed steel was stud ied by measuring its frictional coefficient and specific wear rate at high temperature conditions.
    采用磨损量和摩擦系数的在线测量方法,研究了影响M50高速钢摩擦磨损机理转变的临界温度。
短句来源
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  摩擦因数
    Effect of Thickness and Hardness of Rubber Underlayer on Frictional Coefficient of Water-lubricated Integer Bearings
    橡胶层厚度和硬度对水润滑整体式轴承摩擦因数的影响
短句来源
    Natural water was used as lubrication medium,the frictional coefficient of water-lubricated integer bearings of different rubber underlayer thickness and hardness was studied by using MPV-20B model friction and wear test machine. The change rule of the frictional coefficient was found and friction mechanism was analyzed.
    以自然水为润滑介质,用MPV-20B型摩擦磨损试验机分别研究了不同橡胶层厚度和硬度的水润滑整体式轴承的摩擦因数,得到了它的变化规律并对作用机理进行了分析。
短句来源
    The result shows that when thickness of the rubber underlayer is increased,frictional coefficient is decreased.
    结果表明:橡胶层厚度增大,摩擦因数有减小的趋势;
短句来源
    When hardness of the rubber underlayer is increased,frictional coefficient is increased.
    橡胶层硬度增大,摩擦因数有增大的趋势。
短句来源
    The isothermal and thermal line contact elastohydrodynamic lubrication with Newtonian and Ree-Eyring models were investigated numerically with the multigrid method and the multi-level multi-integration method. The influence of the slide-roll ratio on the frictional coefficient was analyzed,and the influence of the rheological property and the thermal effect on the viscosity of the oil and the distributions of the pressure,film thickness and temperature with various slide-roll ratios were indicated.
    应用多重网格法和多重网格积分法数值求解了Newton流体和Ree-Eyring流体线接触等温和热弹流润滑问题,分析了滑滚比对摩擦因数的影响,指出了润滑油的流变性和热效应对线接触弹流润滑油膜粘度的影响,以及不同滑滚比时压力、膜厚和温度的分布规律。
短句来源
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  “frictional coefficient”译为未确定词的双语例句
    THE MEASURING METHODS OF TOTAL EFFICIENCY, ENGAGEMENT EFFICIENCY AND FRICTIONAL COEFFICIENT IN THE GEAR DRIVE
    齿轮传动效率、啮合效率和摩擦系数的测试
短句来源
    Measurement of Frictional Coefficient Between Tooth Faces of Instrument Gears
    仪表齿轮齿面间摩擦系数的测定
短句来源
    A Calculation Formula of Static Frictional Coefficient of Sliding Bearings and Its Practical Significance
    滑动轴承静摩擦系数的计算公式及其实践意义
短句来源
    Test on the Frictional Coefficient and Wear of Elastomer
    弹性体摩擦磨损特性的测试
短句来源
    The effects of material properties, the coating thickness, frictional coefficient, and the heat input combinations on the stress distribution and the temperature rise distribution are investigated and discussed.
    发现软涂层的应用,降低了粗糙峰温度峰值。 另一方面,硬涂层的高压力峰和低传热性,导致粗糙峰的最高温度非常高,而且涂层厚度越大,压力峰值和温度峰值越高。
短句来源
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  frictional coefficient
The squeezing load is shown to be a decreasing function of the Weissenberg number, while the frictional coefficient is only weakly-dependent on the Weissenberg number.
      
Bounds on flow rate, frictional coefficient, centre of pressure and time-height relation are obtained and compared with classical case, Gross [1].
      
These characteristics as affected by various rolling conditions (e.g., thickness ratio and shear yield stress ratio of the raw clad sheet, roll speed ratio, reduction, frictional coefficient, roll radius ratio, etc.) were analyzed systematically.
      
The similar surface conditions after a relative longer shear-sliding distance on polished surfaces lead to the same steady state frictional coefficient, 0.61, for both finishing surfaces.
      
In comparison with the untreated SiC nanoparticles, the grafted SiC nanoparticles led to more significant reduction in frictional coefficient and wear rate of epoxy.
      
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Applying a computer Program with the method used in the finite element method for liquid film lubrication and the complex method optimization, this paper ontlines an optimization of four partial journal bearings with differently constructed oil chambers on purpose to find out the maximum loading capacity and the minimum frictional coefficient.The best oil chamber parameters of a four single-stepped full bearing of maximum rigidity have also been found.It is evident that in a hydrodynamic bearing optimization...

Applying a computer Program with the method used in the finite element method for liquid film lubrication and the complex method optimization, this paper ontlines an optimization of four partial journal bearings with differently constructed oil chambers on purpose to find out the maximum loading capacity and the minimum frictional coefficient.The best oil chamber parameters of a four single-stepped full bearing of maximum rigidity have also been found.It is evident that in a hydrodynamic bearing optimization if the fitting method will not be used, a marked quantity of calculation shall undoubtedly be necessary. Now within this program some effective maens can give this problem a preliminary solution.

本文介绍运用液膜润滑有限元法与复合形优化法相结合的程序,对四种不同油腔结构的部分瓦径向动压轴承进行优化计算,得到最大承载能力或最小摩擦系数为目标的最优油腔参数,同时计算得到四个单台油腔的径向轴承以刚度最大为目标的最优油腔参数。程序中初步解决了不用拟合法进行动压轴承优化设计中所存在的巨大计算量这一主要问题。

Based on the detailed analysis of existing calculating methods of spoked sheaves, a plane-frame model is set up and so a specialized FEM program is provided for calculating the deformation and stresses of the rim and spokes of a sheave. Introducing the dimensional analysis and orthogonal design test by computer, the main factors influencing the strength of a sheave can be found out, such as the enclosing angle of rope winding around a sheave a, the frictional coefficient u, the number of spokes n and the...

Based on the detailed analysis of existing calculating methods of spoked sheaves, a plane-frame model is set up and so a specialized FEM program is provided for calculating the deformation and stresses of the rim and spokes of a sheave. Introducing the dimensional analysis and orthogonal design test by computer, the main factors influencing the strength of a sheave can be found out, such as the enclosing angle of rope winding around a sheave a, the frictional coefficient u, the number of spokes n and the ratio of the moment of inertia of spoke to that of rim Jf/Ju etc. An option that n = 10 and Jf/Jy = 0,2 is recommended in designing a spoked sheave when both economical and mechanical benefits are concerned.

本文在详细分析了已有绳轮计算方法的基础上,建立了辐条式绳轮的力学模型,编制了有限元计算绳轮的专用程序,电算得到轮缘和轮辐的应力及变形规律。通过量纲分析和电子计算机正交试验,确定出影响绳轮强度的主要参数为:钢绳包角α、摩擦系数μ、轮辐数n、轮辐与轮缘的截面惯性矩比J_f/J_y,考虑到经济性和结构的力学特性,作者建议在绳轮设计中取n=10,J_f/J_y=0.2。

In this paper, the theoretical analysis of some cases of the motion of a sphere rolling down a grooved track is presented. The role of friction force is discussed, and the requirements for frictional coefficients and initial velocities in these cases are derived. A direction to improve the exactitude of related experiment is pointed。

本文对球沿道沟运动的各种情况进行了理论分析,讨论了摩擦力的作用,给出了进行相应的运动所需要的条件。提出了提高有关实验的精确度的途径。

 
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