斜拉桥拉索固有阻尼低、刚度小,容易引起大幅振动。
The large amplitude cable vibration often is induced due to low damping and small stiffness of stay cable.
还通过实例计算对斜拉索大幅振动特性进行了讨论分析。
The large amplitude vibration character of stay cables is discussed via calculation of concrete examples.
实验研究结果表明,该控制方案对空间柔性结构的低频大幅振动有很好的控制效果。
The results of experiments indicated that the control strategy was correct and effective in suppressing the low frequency and large amplitude vibration of flexible space structures.
采用多尺度法研究拉索大幅振动的各种可能性,运用精细时程积分法数值求解振动方程。
The multiple scale method (MSM) is introduced to analyze the characteristics of cable's vibration, and the precise time-integration method (PTIM) is used to solve vibration equations.
拉索是斜拉桥的关键构件,承受桥梁的全部荷载,在风(雨)等作用下容易产生大幅振动。
Research into measures for wind-rain induced vibration resistance of cables of Guanyinyan Changjiang Bridge;
增加斜拉索的阻尼可抑制其振幅,缩小其发生大幅振动的频率范围,但其张力波幅却相应增加。
It is also found that the increase of damping of the cable dwindles the frequency bandwidth of large-amplitude vibrations and reduces the amplitude of vibrations, but enlarges the tension fluctuation.
在两种理论的基础上,分别建立了拉索风雨激振的有限元模型,模拟了拉索发生风雨激振时的大幅振动。
Based on these two theories, the finite element cable model were respectively established which was used to simulate the large amplitude vibration of cables.
为使第二阶模态频率避开发动机一阶惯性力频率,文中对扶手架的质量、刚度进行局部修改,结果使手把振动有较大幅度的下降。
To separate these frequencies, we make a local modification to mass and stiffness of the handle and results in the vibration on the handle of walking tractor to reduce considerably.
针对山东黄岛发电厂3号机组再热管道出现的异常大幅度振动,进行了原因分析;
Regarding the abnormal large vibration of reheat steam pipe of unit 3 for Shandong Huangdao Power Plant, the causes were analyzed.
同时,随着振动降低,负荷提高,装置产量得到大幅提高,取得较显著的经济效益。
Meanwhile, which a reduction of the vibration and an increasing of the load, production of the unit has been upgraded considerably and remarkable economic efficiencies have been made.
牵引齿轮磨损产生的齿形偏差使得牵引构轮和牵引电机振动加剧,噪声增大,齿根应力大幅度增大。
The tooth shape deviation in the worn traction gear will increase the vibration of traction gear and traction motor, increase the noise and increase by large scale the dedendum stress.
实际计算结果表明该非线性气动力模型能够较为精确地计算飞机模型大幅值迎角简谐振动产生的气动力响应。
It is shown the nonlinear aerodynamic model given by the article can accurately calculate aerodynamic responses of aircraft models in large amplitude forced oscillation tests at high angles of attack.
结果表明,当外加激励的频率等于转子的固有频率时,将诱发转子产生大幅的轴向挠性振动。
The results show that the violent flexible vibration will happen if the motivation frequency equals to the natural frequency of the rotor.
应用结晶器非正弦振动技术可以降低结晶器摩擦阻力,减少粘结性漏钢,同时大幅度降低高拉速时的结晶器振动频率。
The non-sinuous oscillation of the mold is used to reduce the mold friction force and stick type breakout, and to lower the oscillation frequency for high speed casting.
一般认为将机械振动引入到金属的塑性成形加工中,不但可以降低材料变形时所需的外力,还能大幅度提高产品成形质量,这些效果的产生主要缘于体积效应的影响。
Volume effect is in the case of the plastic processing system with vibration, under this process the deformation resistance force of materials is reduced, and the deformation rate is risen.
并分析了栏杆、风速和风向角对涡激振动的影响以及未发现明显的大幅涡激振动的原因。
And analyzed the effect of the railing, the wind speed and wind direction on the vortex-induced vibration, and the reason for no obvious vortex-induced vibration.
提出对前向飞行的水平旋翼的振动进行补偿,可以大幅度提高合成距离像的质量。
And it is proposed that much improvement of the range profiles can be achieved by using the vibration compensation of the main rotor of the helicopter in forward flight.
实际使用结果表明,这种设计方案使得托架缸活塞下降平稳,消除了负压效应,从而大幅度地减弱振动和噪声。
The practical used result shows: the scheme makes the bracket cylinder stably fall and eliminates the negative pressure effect. So it greatly weakens the vibration and the noise.
连接架轴向载荷可以大幅提高太阳翼的侧摆振动频率;
The axial load in the tripod of the solar array can increase the swaying frequency largely.
机组改造后振动有较大幅度的降低,符合国家标准。
After retrofitting, vibration of the turbo-set was markedly mitigated, meeting national standards.
不对称叶栅非谐设计虽然会引起与转速同频的较大幅值激振力成分,但从整体考虑可有效降低叶片振动应力。
Though asymmetry stator mistuned may result in bigger amplitude aerodynamic force with the same frequency as rotational speed, it could reduce effectively the aerodynamic force of blade as a whole.
计算实例表明转子由不平衡量引起的振动得到了大幅度减少,达到了非线性支承转子动平衡的目的,效果良好。
The example shows that the vibration response caused by unbalance mass reduces greatly and the method developed in this paper is successful.
计算实例表明转子由不平衡量引起的振动得到了大幅度减少,达到了非线性支承转子动平衡的目的,效果良好。
The example shows that the vibration response caused by unbalance mass reduces greatly and the method developed in this paper is successful.
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