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切向力

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Effects of Coriolis force were analyzed with the three dimensional simulations and the following conclusions were drawn: The tangential component of Coriolis force induces cross stream secondary flow in the form of two-cell pattern,while the radial component of Coriolis force decelerates and accelerates the cent...

计算结果表明,切向哥氏力推动了通道截面内的双涡二次流,径向哥氏力则使得近侧壁流体加速和中心流体减速。换热计算结果从定性趋势上吻合公开文献中的实验现象,反映了旋转附加力的基本影响规律。

The electric displacement perpendicular to the plate surface is singular and proportional to the bending stresses.

压电效应对面内弯曲正应力的影响很小,可忽略不计。2)压电效应对剪应力影响较大,切向电场强度和电位移的集中程度随径厚比变化趋势和切向剪力的变化趋势相同。3)中面上孔边电势和垂直于板中面的电场强度的集中程度随径厚比的减小而减弱,垂直于中面的电位移的集中程度随着径厚比的减小而增强。

Based on the rigorous analysis of the kinetic process of both primary and secondary electrons, the related surface charges were analyzed, and the energy gain of emitted electrons was proportional to the square of the ratio between the tangential and normal component of electric field. In this process, the image force of mirror charges would result in an energy loss. Meanwhile, the effect of field alternation of power frequency ac voltage on electron movement could be ignored.

在前人工作的基础上,进一步严格推导了场致一次发射电子和二次电子的运动方程,分析了电子发射引起的绝缘材料表面带电,表明电子发射后的能量增益正比于场强的切向与法向分量比值 F /// F ^的二次方;同时考虑了在电子发射和运动过程中电荷镜像力的作用,并探讨了交流电压下表面带电的情形,认为当考虑电荷镜像力的作用时,电子的能量增益可能变小,而工频交流电压下电场交变对电子运动的影响可以忽略。

By using static equilibrium law, nonlinear buckle behavior of string in deep well has been researched. In comprehensive consideration of gravity, contact force of borehole wall, axial friction and tangential friction of borehole wall on the string, pressure and viscous resistance of fluid outside of and inside of a string, differential equation of buckle has been established, which amended computational model of axial load on a string.

应用静力平衡法对深井注入管柱的非线性屈曲行为进行了研究,建立了综合考虑重力、井壁支反力、井壁对管柱的轴向摩擦力和切向摩擦力及管柱内、外流体压力和粘滞阻力联合作用下的屈曲微分方程,对注入管柱的屈曲变形及弯曲附加应力等后屈曲行为进行分析,修正了管柱轴向载荷计算模型。

Adhesive forces and contact area between arolium and the target surface were measured when Lycorma delicatula walked on the level and slided on the vertical surface. A model of peeling theory was put forward to give relationship between contact area and adhesive forces.

测量了斑衣蜡蝉在切向和法向两种状态下的抓附力以及在切向和法向两种状态下抓附时中垫与接触面的接触面积,分析了接触面积和力的关系。

The presence of shear force in a n ear-field scanning optical microscopy can be detected by optical and nonoptical means.

近场扫描光学显微镜中,切向力的检测有两种方法:光学检测法和非光学检测法。

Nevertheless, in these aPproaches the contact intethee are charactered sboly edstiffeess K. and K.' which is not PerfeCt and rigorous in thc vitw of solidmechanics and rather rough for the description of the behavior of the iDtfores. Incollbet, taken as a contact Problem, the principal chatrs of the iDtCthees can bereflected: the cbntact inifore is of shear strength Which imPlies tha a genericpair of contact points on the inidse will displace coincidentally if the tangentialfbrce at this POint has not reahed the 1imit resistance, else, relative s1ide betwee the\ points will occur along the tangental direction.

本论文在对这两种方法进行认真的分析后,说明它们对不连续面的描述并不合理,也无法反映出不连续面的主要力学特性,同时指出,将带有不连续面的岩土工程问题作为接触问题计算更为合理,它可将不连续面受力变形的主要特点反映出来,即:(1)接触面具有相应的&抗剪强度&,即当接触面上某一点处的切向应力小于该点处的抵抗强度时,点对共同变形;达到强度时,则沿切向发生相对滑动;(2)在整个变形过程中,发生接触的变形体不能相互侵入。

While with the Coriolis force omitted, the flow in the cavity is under the influence of centrifugal buoyancy force, which can develop from stable to unstable as this force enhances. The centrifugal buoyancy force could lead to flow unstably.

哥氏力垂直于〓与〓构成的平面,对径向速度导致切向作用力,对切向速度导致径向作用力,在该力的作用下盘腔内轴向通流诱导的旋涡被压扁,尽管涡强有所增加,但是盘面的平均换热基本减弱。

The major advantage of PFC2D is the evolution regularity of microscopic fabric parameters including co-ordination number, contact normal, normal contact force, shear contact force, can be achieved together with the macroscopic liquefaction response. The micromechanism of sand liquefaction is further discussed.

颗粒流数值模拟的优点在于得到试样液化宏观力学表现的同时,通过不同循环加荷时刻试样内细观组构参量(包括配位数、接触法向分布、粒间法向接触力、粒间切向接触力)的演化规律,分析砂土液化过程中细观组构变化与宏观力学响应之间的内在联系,从而可进一步探讨砂土液化的细观力学机制。

Finally, the wave equation of the electromagnetic field of this kind damper isderived from the Maxwells equation. The magnetic flux density at the boundary isassumed to be harmonic, so the analytical result of the wave equation is solved. When therotor rotates, eddy currents flowing inside the conducting material field are caused. Thetangential force acting on the rotor because of the action between eddy currents andmagnetic field is produced. The tangential force causes a retardation torque, which leadsto the increase of power and heating effects.

最后,应用Ahrens的电磁轴承简化模型,从Maxwell方程出发推导了应用于本文所述的被动式电磁阻尼器的波动方程,并用傅立叶级数把矩形磁场展开的谐变磁场作为磁场的边界条件,通过求解波动方程得到磁场的解析解,从而计算了阻尼器对转子的电磁力和由涡流引起的切向力产生的阻尼器附加功耗。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。