力平衡

It comes form vibration signal that obtained by monitoring in two mutual vertical direction on one cross section of the axletree or axes neck.

它可以通过振动位移和激振力的相位的变化来判断转子的临界转速；当挠性转子由不平衡力引起振动时，在不同的转速下有不同的振型，根据不同的振型对转子进行有针对性的平衡；另外根据检测到的轴心轨迹图形状，可以分析出造成振动的具体原因，根据不同的原因进行防振和减振。

If the iterative step is greater than a certain number, the fictitious equilibrium force will change simply with factor of slope.The algebraic method is efficient to obtain a convergence value of safety factor.

研究结果表明：基于给出的算法，通过迭代求解安全系数，收敛速度快；在迭代初期，平衡力与安全系数间有较复杂的对应关系；当迭代次数大于某一值后，平衡力随安全系数的增加而单调地变化。

It is a slow evolvement under quasi-balance of inertial force, Coriolis force and pressure gradient force.

显然，这种准平衡态是惯性力、柯氏力和气压梯度力三者之间的平衡。

In terms of the transmission shaft balancing, it exists another problem that the shaft is not looked at as rigid body.When the rotor running at a high-speed ,under the action of unbalance force ,the transmission shaft will bend. It is certainly ideal to balance a transmission shaft as a flexible rotor.However, considering the mass production of automobiles, this method is obviously unpractical. In order to discreasing the flexible deformation, in this theory, the feasibility that double- plane balancing takes method the place of multi-plane balancing on a special place for one segment transmission shaft.

从传动轴平衡的角度来看，传动轴并非刚体，在汽车高速旋转时，由于不平衡力的作用会使传动轴发生挠曲，如果将传动轴作为挠性转子进行平衡当然比较理想，但是不符合汽车大批量生产的实际，为减少挠曲振动，利用挠性转子平衡原理，对于单根传动轴，从特殊位置进行校正，从而以二面平衡代替多面平衡是可行的。

The relationship between fictitious equilibrium force and factor of safety is complex in the initial steps during the iterative procedure.

分析了虚拟平衡力与边坡安全系数间的变化规律，研究了通过迭代求解非线性方程确定在虚拟平衡力趋于零时边坡安全系数的基本原理。

Pilot-type relief valve as shown in Figure 4-18, mainly from the main valve and pilot valve composed of two parts, the main feature is the use of the main valve, balance piston, the next two cavity fluid pressure difference and the spring force balance.

先导型溢流阀如图4-18所示，主要由主阀和先导阀两部分组成，其主要特点是利用主阀，平衡活塞上、下两腔油液压力差和弹簧力相平衡。

When the balance of the piston, the pressure difference between the two parts form a cavity upward oil pressure and spring pressure, friction, balance piston weight in balance, the balance of the piston to maintain a certain distance from opening up.

当平衡活塞上、下两腔压力差形成向上的油液压力和弹簧压力、摩擦力、平衡活塞自重处于平衡状态时，平衡活塞上升距离保持一定开度。

In the theoretical investigation, we calculate the static load-deflection curves and the longitudinal forces transmission for a specified angle difference between the fixed clamp and the moving clamp. To study the stability of the equilibrium configuration, we superpose the equilibrium configuration with a small perturbation and calculate the natural frequencies of the deformed elastica. In addition, the condition where two ends with identical angles are introduced will be researched.

在理论分析方面，针对几种不同的固定夹持端与滑动夹持端之夹角，计算出静态的受力-变形曲线以及轴向力传递关系；为了探讨平衡位置的稳定性，在平衡位置加上微小的简谐扰动，然后计算出弹性板条受力变形后的自然频率；此外，对於两端角度相同的情形，将有更深入的研究。

The basic study content of this essay is follow as:1.To calculate the stable factor k_i~0 of individual slices according to self-forced condition of slices,under the condition of without inter-slices force.2.To calculate transferal force R_i, stabile factor K_i of individual slices and stabile factor K of the stable slope, under the condition of there is a level transferal force between slices and the slope is stable. If the slope is not stable, to calculate the transferal force R_i between individual slices, the stabile factor K_i of individual slices and the stable factor K of the unstable slope in term of concordant conditions of acceleration.

本文研究的基本内容包括： 1、研究土条条间不传递力情况下，由土条自受力状态计算各土条的稳定系数K_i，并由K_i计算稳定土坡的稳定系数K； 2、研究条间传递水平力情况下，若土坡稳定，由土条预平衡状态、传力顺序和传力边界条件，推导各土条间的水平传力R_i的理论公式和各土条的稳定系数K_i，并由K_i计算稳定土坡的稳定系数K；若土坡失稳，由加速度和谐条件计算各土条间的水平传力R_i和各土条的稳定系数K_i，并由K_i计算失稳土坡的稳定系数K

When the pressure is low, the role of Poppet head pressure sufficient to overcome the pressure regulator spring force, Poppet Head is closed at this time there is no pressure on the oil through the damping holes on the balance of the piston movement, so a balance piston, the next two cavity pressure equal, balanced piston under the action of the spring force gently on the top of the seat, pressure port and overflow port unreasonable.

当压力较低时，作用在提动头上的压力不足以克服调压弹簧力，提动头处于关闭状态，此时没有压力油通过平衡活塞上的阻尼孔流动，故平衡活塞上、下两腔压力相等，平衡活塞在弹簧力的作用下轻轻地顶在阀座上，压力口和溢流口不通。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。