查询词典 static friction

By friction round shape of the different levels can be divided into cylindrical friction wheel drive, cylindrical trough friction wheel drive, three kinds of cone friction wheel drive.

按摩擦轮形状的不同，可分为圆柱平摩擦轮传动、圆柱槽摩擦轮传动、圆锥摩擦轮传动三种。

It is shown that the friction force and bulkhead thrust are the main factors of shield thrust setting, while the friction between the cutterhead and soil is the main factors of cutterhead torque setting. Friction force between shield and soil would make front soil of shield upheave, and subsidence of surface soil is induced by ground loss when the friction force between the cutterhead and soil results in the surface settlement asymmetrical distribution.

通过计算发现，盾构施工中盾壳摩擦和正面推力是盾构推力设置的主要因素，而刀盘与土体摩擦是刀盘扭矩设置的主要因素，盾构前方土体隆起主要由盾壳摩擦引起，刀盘摩擦作用主要引起地表沉降的非对称分布，地表沉降主要由盾尾空隙产生。

Friction rubber draft gear, as one of high-capacity draft gears, is developed after friction steel spring draft gear. Rubber has energy absorption capability and non-linear rigidity capability, so the friction rubber draft gear's capacity is usually higher than the friction steel spring bumper.

摩擦式橡胶缓冲器是继摩擦式钢簧缓冲器之后开发的一种大容量缓冲器，这种缓冲器利用了橡胶自身具有吸收能量及非线性刚度的特性，因此其容量一般比摩擦式钢弹簧缓冲器高。

The flume experiments of equilibrium concentration in water and slurry have been done to determine the function between the kinetic friction angle and internal friction angle. The equilibrium concentration of debris flow calculated by the function between the kinetic friction angle and internal friction angle is quite close the equilibrium concentration data of debris flow in field.

通过实验确定以颗粒浓度和颗粒最大体积浓度为主的动磨擦角与静磨擦角的函数关系式，以该关系式计算的泥石流运动的均衡浓度与泥石流原型资料很接近。

The friction, friction coefficient etc of prescind from external asperity model and the single asperity model in plasticity forming were respectively researched by using finite element analysis software ADINA and Coulomb friction model and nonlocal friction model.

应用大型有限元软件ADINA，采用库仑摩擦模型和非局部摩擦模型，对不考虑表面微凸的模型和单个微凸体模型在塑性成形中的摩擦力、摩擦系数等进行研究。

Circular and catenary always represent the shapes of minor principal stress soil arch between two parallel walls, but which shape should be used in the calculation of active earth pressure on two parallel walls remains disputed. Considering fully developed wall friction or partially developed wall friction, circular and catenary, the two shapes of minor principal stress soil arch between two parallel walls are theoretically analyzed. According to the shapes of soil arch, the coefficients of earth pressure corresponding to different angle of internal friction and that of wall friction are obtained, and the formula of active earth pressure on two parallel walls is derived.

鉴于计算平行墙间侧土压力时关于土体小主应力拱形的选择尚存在争议，考虑墙土摩擦角充分发挥和部分发挥两种情况，对平行墙间土体小主应力圆弧拱和悬链线拱分别进行了分析，得到了对应于不同内摩擦角和墙土摩擦角的侧上压力系数，以及平行墙间侧上压力的理论公式。

For the first patern, elastic dynamics is adopted to study the steady state rolling contact, elastic dynamics incorporating with rigid dynamics is adopted to study the non-steady state. For the steady state, the analytical solution is obtained, and for the non-steady state, the variational formulation to solve the problem numerically is derived For the later patern, the function type friction coefficient is introduced. On the basis of the quasi-stastic theories of constant friction coefficients, both the exact theory and the simplified theory of the function type friction coefficient are established, the computer programms for both the theories are also made out. Using the function type friction coefficient, Shen-Hedrick-Elkins theory's application range is extended to large creepage .

对于速度对接触体力学特性的影响，本文采用弹性动力学方法和弹性动力学与刚体动力学相结合的方法分别对稳态和非稳态两种情况进行了研究，得到了稳态情况的解析解，给出了对非稳态情况进行数值求解的变分公式；对于速度对相关物理量的影响，本文主要讨论了速度对摩擦系数的影响，在滚动接触准静态理论的基础上引进了函数型摩擦系数，建立了函数型摩擦系数的滚动接触准静态精确理论和简化理论，并分别编制了相关的计算程序，还用函数型摩擦系数将简便的Shen-Hedrick-Elkins理论的适用范围扩展到大蠕滑区。

A model for predicating friction coefficient of resin-based friction materials based on artificial neural network was established to forecast its friction performance,and the ANN network model was trained by using 30 kinds of frication material's data of friction coefficient,and then fitted.

为了预测不同成分的树脂基摩擦材料的摩擦性能，建立了摩擦材料成分与摩擦因数之间的人工神经网络预测模型。

As the results, both the friction and wear are much lower in n-monohydric alcohols than in water; in ethanol, the friction and wear increase rapidly when a small amount of water was blended into the lubricant; the friction and wear decrease slightly with increasing the chain length in n-alcohols; in polyhydric alcohols, the increase of the hydroxyl number greatly reduces the friction and wear.

研究结果表明，陶瓷在醇中的摩擦和磨损均比水中低；在乙醇中加入少量水可明显增大其摩擦和磨损；随着一元醇分子链长的增加，其摩擦磨损略有降低；多元醇中羟基数目越多，其摩擦磨损越低。

The friction factor of glass reinforced plastic mortar pipe and typical soil of Shanghai, the develop characters of friction and the effect of injecting slurry on the frictional characters are got through the experiments. The result shows: the ektexine of glass reinforced plastic mortar pipe is slipperier than concrete pipe; injecting slurry could minish the friction between soil and pipe, but the effect of minishing friction is bear

然后通过对玻璃钢夹砂顶管进行摩阻力特性整管试验与直剪试验研究，得到了玻璃钢夹砂顶管外壁、混凝土与上海地区典型土层间的摩擦系数，以及玻璃钢夹砂顶管外壁摩阻力的发展特性，并且分析了注浆

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。