Preliminary Research of Bridge-Vehicle Resonance on Simple-Supported Beam Bridges on High Speed Railways 高速铁路线上简支梁桥车桥共振问题初探
For the system a linear resonance will take place if its speed is equal to velocity of elastic wave. 指出了当运动速度等于横向弹性波速度时系统将发生基频共振。
Research on Field Theory Based Adaptive Resonance Theory High Speed Digital Circuit Test 基于自适应神经网络的高速数字电路测试的研究
Discussion on distinction of displacement resonance and speed resonance 位移共振与速度共振区别的探讨
In concurrence with the exhaust system resonance occurs at certain engine rotating speed during testing, the noise level of engine will substantially increase. 内燃机排气系噪声试验中,在某种转速下,排气系发生共振,从而使发动机噪声大大增加。
The resultS show that when the speed of the injected electron is within a range, lower than the initial resonance speed, a higher S.S. G. 结果表明:当电子入射速度低于系统初始谐振速度的某一范围时,有较高的小信号增益;
Even if inspiring frequency is far from frequency of the derived system, first harmonic, super harmonic and combined harmonic resonance may take place respectively in the normal speed range of an actual gear system, because of time-varying mesh stiffness. 即使激励频率远大于派生系统的固有频率,在实际的物理系统中,由于时变啮合刚度的影响,也可能出现主共振、谐共振和组合共振。
Content of the free-radical were determined using the paramagnetic resonance method. Result shows that high speed steel cutter blade wear seriously during fiber cutting, its main wear mechanism is abrasion of TiO_2 particles in fibers. 结果表明:切割涤纶半消光纤维时,高速钢刀片的磨损很快,主要磨损机制为纤维中TiO2粒子的磨粒磨损;
Vibration characteristics of 1st stage turbine rotor blade of engine has been studied thoroughly to analyze possibility of resonance vibration at normal engine speed. 对某型发动机I级涡轮转子叶片的振动特性进行了较深入的研究,并分析了它在发动机常用工作转速下发生共振的可能性;
The dynamic deflection may become very large due to resonance in case of the flexible rotor speed approaching or exceeding its1st or2nd order critical speed. 而挠性转子在接近或超过其第一、二阶临界转速时,转子处于共振状态,这时动挠度达到很大的数值。
A new demodulated resonance method for fault diagnosis of low speed and high load rolling bearing 一种用于低速重载轴承故障诊断的共振解调法
The test results show that large amplitude resonance will occur, if the rotating speed of the propeller shaft is equal to the integer multiples of the first order critical rotating speed in the lateral vibration of propeller shafting. 试验结果的分析表明,只要转速的整数倍等于一阶一次横向振动临界转速时就会产生振幅较大的共振。
By analysing the amplitude of the shaft vibration, this article concludes that when the bolts get loose, it will result in resonance at the second critical speed and serious vibration. 本文利用振动测试记录,具体论证了汽轮机排汽端一侧轴承松动,而导致汽轮机第二临界转速共振和强烈共振。
Experimental Investigation of Resonance Speed for Ship Propeller Shafting in Lateral Vibration 船舶轴系横向振动共振转速的实验
Novel automatic resonance arc suppression controller based on high speed SoC MCU 基于高速SoC单片机的新型调容式消弧调谐控制器
The relation between resonance speed and resonance pipe-length is found by calculation. 计算出谐振管长度与理论谐振转速的对应关系。
Noise and Low-Frequency Resonance in A Gasoline Engine during High Speed 汽油机高速异响噪声和低频共振
In this article, we also briefly discuss the relation between the width of the resonance speed region and the combination of the different exciting forces. 本文还简单地讨论了共振转速区宽度和激振力配置间关系的计算方法。
Test of Vibration Character and Analysis of Resonance Speed Character for Disk 轮盘振动特性试验及共振转速特性分析
By using the method which combines the advantages of local projective noise reduction and demodulated resonance technology, fault on the low speed bearing is successfully diagnosed. 综合局部投影降噪算法及共振解调技术两者的优点,对低频轴承进行了故障分析与诊断。
The unbalance response and the region of resonance speed 不平衡响应与共振转速区
If lower mode damping is increased in order to limit the resonance amplitude, the rattle threshold speed will increase. 增大低阶模态阻尼,能够增大拍击门槛转速。
After that, the effect of the fluid and its height on the resonance frequency and the relationship between the rotating speed and the driving frequency, the driving voltage, the fluid circumstances and the rotor radius are tested through the experiments. 然后,用实验测定了电机转速与驱动频率、驱动电压、液体粘性、液位高度和转子半径之间的关系。
This paper presents a new demodulated resonance method for fault diagnosis of low speed and high load rolling bearing by analyzing the features of the bearing. 针对低速重载轴承特点,提出了适合于低速重载轴承故障诊断的共振解调方法。
It is indicated that the results of component mode synthesis are almost consistent with the results of the original system, and only small errors exist in the neighborhood of the third resonance speed area. 结果表明,模态综合法的计算结果与原系统的计算结果基本一致,仅在第三个共振转速区附近存在较小误差。
Rotor-bearing system is the core component of marine steam turbine; turbine rotor is able to avoid resonance vibration and the critical speed with the reasonable distribution of the critical speeds. 转子-轴承系统是船用汽轮机的核心部件,合理的临界转速分布可以使汽轮机转子在运行过程中避开临界转速,避免发生共振。
The Campbell chart is drawn to analyze the resonance speed of the turbine blade. ( 3) The finite element model of turbine blade with zigzag shroud is built. The stress of the blade is analyzed under different work rotation speeds. 绘制了叶片的Campbell图,分析了该汽轮机叶片的共振转速。(3)建立了带Z型冠叶片的有限元模型,分析了工作转速下的叶片应力。
The author respectively introduces the inherent frequency of the drill string lateral vibration, tensional vibration and axial vibration, then manily analyses transverse resonance and presents the calculation method of critical speed. 文中分别讨论了钻柱横向振动、扭转振动和纵向振动固有频率的计算方法,重点分析了钻柱横向共振的发生及危害,给出了确定钻柱临界转速的方法。