frictional contact 中文意思是什麼

frictional contact 解釋
摩擦接觸
  • frictional : n. 摩擦的，由摩擦而生的。adv. -ly
  • contact : n 1 接觸；聯系；交涉。2 〈美國〉（有勢力的）熟人；門路。3 【數學】相切；【電學】接觸；觸頭；觸點...
  1. This article offers a method for solving the frictional drag, that is, according to the various buckled shapes of coiled tubing in different hole sections, working out the mean contact counterforce in a screw pitch in solving the radial contact counterforce

    求解摩阻力時，可針對連續油管在井身中不同結構段的不同變形形狀，採用求解徑向接觸反力時求一個螺距內平均接觸反力的方法加以解決。
  2. For sliding contact, the coefficient of kinetic friction uk is defined as the ratio of the frictional force to the normal force.

    滑動接觸時，動摩擦系數Uk的定義是摩擦力與法向力的比率。
  3. For sliding contact, the coefficient of kinetic friction uk is defined as the ratio of the frictional force to the normal force

    滑動接觸時，動摩擦系數uk的定義是摩擦力與法向力的比率。
  4. Frictional contact multipole - bem analysis of traction field in screw pairs

    軋機壓下螺紋副不等厚螺牙面力場的多極邊界元解析
  5. The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film

    試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。
  6. In our experiments, a commercial finite element code with a capability of simulating large - strain frictional contact between two or more solid bodies is used to simulate the core cutter - soil interaction

    在我們的試驗中，使用了一個商品化的有限元程序，它具有模擬兩個或多個固體間大應變摩擦接觸的能力，我們用它來模擬巖心提取器與土壤間的相互作用。
  7. We also proved that lead of the twist - roller frictional drive not only is influenced by the load, but also has relation with contact stiffness between the twist - roller and the shaft

    證明了導程的變化量不僅取決于載荷變化量，而且取決于扭輪和傳動軸之間的接觸剛度。
  8. Based on the theories of gear engagement, contact analysis, friction and heat transfer, a three - dimensional finite element model of gear tooth was established to investigate temperature distributions and variations along the contact path over a range of applied loads and operating speeds with consideration of lubrication conditions. sensitivity analysis of surface temperature to gear configuration, frictional heat flux, heat transfer coefficients, and oil and ambient temperature was conducted and the major parameters influencing surface temperature were evaluated

    本文基於齒輪嚙合原理、輪齒接觸分析、摩擦學和傳熱學，以有限元分析方法和理論分析計算相結合為手段並以實驗測量結果作為參考，建立了適用於工業應用並具有較高計算精度的高速齒輪傳動輪齒溫度分析的模型和方法，系統地分析了輪齒本體溫度的大小和分佈以及齒輪幾何、載荷及轉速和潤滑冷卻條件等對輪齒本體溫度的影響。
  9. The author built the dynamics model of its constrained motion with frictional contact, and its moving stability is analyzed by singular perturbation theory

    提出了管道內受限微機器人運動的動力學模型，並根據這一模型利用奇異攝動理論對微管道機器人管內運動穩定性進行了研究。
  10. Three possible contact driving mechanisms of saw motor are discussed, and the frictional drive of saw motor is shown by the linear relation between the speed of the slider and the driving voltage

    探討了表面彈性波馬達三種可能的接觸傳動機理，並以表面彈性波馬達動子速度與驅動電壓呈線性的關系，首次證實了表面彈性波馬達的工作原理是接觸摩擦傳動。
  11. The established contact model has provided good explanation for the phenomena of the reduction of frictional coefficient induced by longitudinal ultrasonic vibration and has great academic significance in proposing friction reduction technology based on elliptical ultrasonic vibration

    對該模型的分析很好地解釋了縱向超聲振動所引起的摩擦系數降低的現象，為提出利用橢圓軌跡超聲振動來實現減摩奠定了理論基礎。
  12. The fem results indicated that as to the rough surfaces in sliding contact, the value of the contact pressure was very high which coursed a high value of the heat flow rate, meanwhile the sliding time was not enough for the frictional heat to transfer, thus the highest value of the body temperature occurred just on the sliding surfaces, which possessed a sharp thermal gradient in direction perpendicular to the sliding surface. so the great thermal stress was caused just by the sharp gradient and the thermal elastic distortion with which the contact pressure changed occurred simultaneously, thus this change of the contact pressure would affect the temperature distribution in return

    對于相對滑動的粗糙表面，因實際接觸面積小而導致接觸壓力很大，這樣使得熱流密度會很大，同時由於滑動時間很短，熱來不及傳導，最高溫度發生在摩擦表面，在垂直於摩擦面的方向有很大的溫度梯度，使得熱應力很大，且最大應力發生在表面，同時產生熱彈性變形，這種變形使得接觸區域內的壓力分佈發生變化，這種變化又反過來影響了接觸區域的溫度分佈。
  13. A general matlab program for computing the 3 - d frictional elastic contact problem by boundary element method is compiled. the wire race - ball advancing contact problem is numerically calculated, the 3 - d distribution of contact stress and deformation is plotted and the evolvement of contact area is given

    採用matlab語言編制了三維摩擦型彈性接觸問題的通用邊界元程序，對鋼絲滾道?鋼球擴展型接觸問題進行了數值計算，得到了接觸應力和接觸變形的三維分佈以及接觸區域的大小。
  14. The decisive nano forces are pointed out to he van der waals force, repulsive contact force, nab frictional force, capillary force and nano electrostatic force, and their calculation formulas are also deduced

    指出起主要作用的納觀力為范德華力、接觸斥力、納米摩擦力、毛細作用力以及納米靜電力等五種，並初步推導了各種納觀力的表達形式。
  15. The effect of the variation of temperature and contact pressure of the sliding contact surfaces with frictional heating on each other, particularly the relationship of the applied pressure and the contact pressure and the effect of the separate variation of some parameters on the simulation results were taken account into in the course of numerical simulation

    在數值計算過程中，著重考慮了溫度變化與接觸區域壓力變化的耦合問題，接觸壓力與外加壓力的關系，以及分別改變一些參數對結果的影響。
  16. The function of virtual work with complementarity for 3d frictional contact problem is educed and an incremental fe - lcm is also proposed

    提出了基於有限元離散的三維摩擦接觸問題增量線性互補方法。
  17. 7. a fe - lcm program is developed for the analysis of 3d frictional contact problem and many examples verified the correctness of the model, method and program

    研製了三維彈塑性接觸問題有限元線性互補分析程序，通過眾多考例的驗證，表明了本文模型、方法和程序的正確性。
  18. Based on g - w contact model, two rough surfaces in contact were simplified to a smooth one and a rough one which has regular rectangular asperities, and a three - dimensional transient thermal and stress coupled fem model was established using thermal - structure sequential coupling. the course of the sliding with friction was simulated using the nonlinear multiphysics field fem, meanwhile considering thermal - elastic problems of the two bodies, to calculate and analyze the temperature, contact pressure and stress of the sliding contact surfaces with frictional heating

    基於g - w接觸模型，將兩個粗糙表面簡化為一個有規則排列的長方體微凸體的粗糙表面與一光滑表面，利用熱結構順序耦合建立三維瞬態有限元計算模型，考慮兩個物體摩擦接觸的熱彈性問題，採用非線性有限元多物理場來實現，對粗糙表面接觸模型的瞬時摩擦溫度場、壓力場和應力場進行了計算分析。
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