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摩擦
相关语句
  friction
    THE DYNAMIC RESPONSE OF LAMINATED PLATE WITH FRICTION DAMPING (TEST STUDY AND FINITE ELEMENT ANALYSIS)
    摩擦阻尼层板动力响应的研究(试验研究和有限元分析)
短句来源
    THE APPLICATIONS OF DRY FRICTION IN VIBRATION CONTROL
    干摩擦控制振动的应用
短句来源
    Investigation on the Performance of Small-Diameter High-Strength Friction Bolts and Bolted Friction Joints of Cold-Bent Thin Steel Plates
    小直径摩擦型高强度螺栓连接冷弯薄壁型钢性能试验研究
短句来源
    Method for Fitting of P-S Curve and Mechanism of Friction Pile
    纯摩擦桩荷载-沉降曲线的拟合方法及其工作机理
短句来源
    Mechanical Principle of Friction Bolt and Its Applications in Engineering
    摩擦式锚杆作用原理及其工程应用
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  “摩擦”译为未确定词的双语例句
    Stress Analysis of Press Frame on the Model J53—680 Under Torsion
    J53-630吨摩擦压力机受扭床身的受力分析
短句来源
    Cnotrol Design for Shock Absorption of Reinforced Concrete Frame-Friction Shear Wall Structures
    钢筋混凝土框架—摩擦剪力墙结构的减震控制设计
短句来源
    ANALYSIS OF EARTHQUAKE RELIABILITY FOR STRUCTURES WITH RESILIENCE-FRICTION BASE ISOLATION SYSTEM
    恢复力-摩擦基底隔震结构的地震可靠性分析
短句来源
    Application of Contact-friction Interface Element to Tunnel Excavation in Faulted Rock
    接触摩擦单元在模拟隧道开挖中的应用
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    THE DESIGN OF CENTRIFUGAL PIPE FLOATING PILE
    离心管摩擦桩的设计
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  friction
Many physical systems such as biochemical processes and machines with friction are of nonlinearly parameterized systems with uncertainties.
      
Experimental Research on Friction of Vehicle Tire Rubber
      
A newly developed tire rubber friction test machine is introduced.
      
Test data of tire rubber friction on concrete and icy road surfaces are obtained and analyzed.
      
The effect of different road surface, ambient temperature, contact pressure, and slip velocity on friction coefficient is apprehended.
      
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  additional friction
These interactions lead to additional friction coefficients for translational and rotational motion.
      
In the homogeneous deformation model, it is assumed that the deformation mode is different under constraint and involves uniform densification, which leads to inherent hardening as well as additional friction.
      
Again, additional friction forces are generated which must be considered in a tubing forces calculation.
      
Calibrating the system in the casing in the water above the lake bottom revealed negligible additional friction of the rotating rod.
      
No additional friction forces are imposed on the load cell as the cylinder is free to move and rotate.
      
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本文提出了岩基稳定问题的初步意见.文中分析了岩石地基上混凝土坝稳定性的现行计算方法和研究现状,同时提出了运用地质分析和力学分析相结合的方法。对整固岩基,按混凝土与基岩接触面平面滑动的情况,采用野外大面积抗剪断试验中得到的极限 c,f 值,根据下式进行抗滑稳定计算:K_c=(Σf(V-U)+Σ_(ca))/ΣH=2.0~3.0.当坝底基岩和混凝土性质不同时,建议按变形一致的原则求总的抗滑阻力.为了校核接触面因超载而被拉裂时的稳定,还需要按剪断后的摩擦试验结果,用上式校核其稳定性,但 K_c 可以采用稍大于1.0的数值.对非整固岩基,需要运用地质分析方法,根据各种软弱面的总趋向并配合模型试验,确定可能滑动面的位置和形状;测定沿软弱面的抗剪强度指标;用计算或试验方法求坝基内部的应力和渗透压力分布;用静力平衡方法计算沿各可能滑动面的抗滑安全系数 K_c,找出其最小值;当 K_c<2.0~3.0时,需提出各种工程处理措施,以满足稳定要求.这些分析方法还需要在今后工程实践和科学研究中加以论证和充实,希望引起讨论,使今后工作有所遵循.

This paper gives the result of a special study of the stability sliding in rock mass on the right abutment of certain reservoir. The breaking face in landslide mass is assumed to be inclined. The ultimate equilibrium of wedge shaped mass is used to calculate the position of breaking face and the sliding force. Through the present calculation of rock mass stability, it is considered that the angle 6 between the force acting on the breaking face and the normal direction of the face would be more appropriate...

This paper gives the result of a special study of the stability sliding in rock mass on the right abutment of certain reservoir. The breaking face in landslide mass is assumed to be inclined. The ultimate equilibrium of wedge shaped mass is used to calculate the position of breaking face and the sliding force. Through the present calculation of rock mass stability, it is considered that the angle 6 between the force acting on the breaking face and the normal direction of the face would be more appropriate to take the angle of internal friction of rock. Finally, the method of equatorial horizon projection is used to analyze and calculate the sliding force and the resisting force in space. Based upon the, results of present calculation, appropriate measures have been proposed, and accordingly are adopted by the engineering projects. To the further verification of these assumptions and results of calculation, plane model stability tests of rock mass consisting of blocks, which stipulated the engineering geological condition of this project have been made. It is fully proved from the test results that the proposed assumptions and method of calculation are close to reality.

此文是某水库右坝肩岩体稳定专题工作成果;提出了滑坡体内破裂面是倾斜的假定,并用楔形体极限平衡计算破裂面位置及滑动力。通过对目前稳定岩体的计算,认为内破裂面作用力与法线夹角δ值取岩石内摩擦角比较合适。最后运用赤平极射投影进行空间滑动力与阻抗的分析计算。根据计算成果,提出了相应的处理措施,为生产单位采用。 在工地做了符合本工程地质情况的块状岩体稳定平面实验,试验成果证实了提出的假定和计算方法是符合实际的。

In this paper, the strength and deformation characteristics of tailing under high pressure were studied with triaxial tests on three kinds of tailing. It was found that the amount of the grains broke increased with the shear strain and confining pressure, independent of the initial density of the specimen. The shape of Mohr envelops under high pressure was somewhat curved. The internal friction angle in the range of testing confining pressure (below 70 kg/cm2) was less than that under the normal confining pressure...

In this paper, the strength and deformation characteristics of tailing under high pressure were studied with triaxial tests on three kinds of tailing. It was found that the amount of the grains broke increased with the shear strain and confining pressure, independent of the initial density of the specimen. The shape of Mohr envelops under high pressure was somewhat curved. The internal friction angle in the range of testing confining pressure (below 70 kg/cm2) was less than that under the normal confining pressure (below 10kg/cm2) by 8°~ 13° which is smaller than that of sand in the same conditions. Therefore, in the analysis of the stability and deformation of high tailing dams, it is necessary to take account of this effect and to compute shear strength, tangent modulus and tangent Poisson's ratio according to the results of the experiment.In this paper, the tangent modulus and the tangent Poisson's ratio computed with internal friction angle under convenient pressure and with non-linear variability of strength under high pressure were compared. The result shows that the tangent Poisson's ratio computed with the relationship proposed by Daniel is in conformity with the testing data, but the value obtained by assuming the relationship between the axial strain and lateral strain as hyperbola differs from the testing data.

本文通过三种尾矿砂的三轴剪力试验对尾矿砂在高压力下的变形与强度特性进行了研究。试验表明,颗粒破坏的数量随着剪切变形和侧限压力的增大而增多,与试样的初始密度却无直接关系。在高压力下摩尔包线的形状稍弯曲,在本文试验的压力范围内(侧限压力小于70kg/cm~2),内摩擦角比在通常试验的压力下(侧限压力小于10kg/cm~2),可减小达8°~13°,比砂土在同样条件下减小得多一些。因此在进行尾矿坝稳定与变形分析时,都应考虑这种影响,即根据高压力下的试验结果,计算尾矿砂的抗剪强度、切线模量与切线油松比。文中对用低压力下内摩擦角所算得的切线模量、切线泊松比和考虑高压力下强度非线性变化计算的数值进行了比较。试验还表明,高压力下的切线泊松比,用但尼尔建议的方法进行计算与实测资料相符,用轴向应变与侧向应变为双曲线关系的假设进行计算则相差较大。

 
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