机械共振

用机械共振法测引力常数G

Experimental Determination of Gravitational Constant G by Mechanical Resonance Method

利用人工振动技术增加石油产量的机理之一是地层的机械共振作用。

We consider that mechanical resonance is the one cause of enhanced oil-recovery .

荡秋千，是熟知的机械共振的例子。

A common example of mechanical resonance is provided by pushing a swing .

另外可以通过调节参数抑制机械共振以及设置摩擦补偿参数的方法更进一步的提高机床动态特性。

Other Via suppress oscillations and setting the frictional torque compensation farther enhance machine dynamic characteristics .

运动部件机械共振频率磁共振脑血流灌注加权成像是功能磁共振成像的一个重要组成部分。

Mechanical resonance frequency of the moving element MR perfu-sion-weighted imaging is an important part of the func-tional MR imaging .

4个不同的测试条件下得到的磁电系数曲线均出现了多于一个机械共振峰的现象。

With different measurement condition , four ME coefficient curve all demonstrate a phenomenon that there are more than one mechanic resonance peak in four curves .

进一步讨论了具有磁单轴各向异性的磁性薄膜在经历铁磁共振时通过调节外加恒定磁场产生机械共振的可能。

And we also study the possibility of producing mechanical resonance of the cantilever through modulating the external static field when the uniaxial magnetic film is under FMR .

当扰动频率接近共振频率时，会引发机械功率共振。

When disturbance frequency is close to resonance frequency , mechanical power resonance will be triggered .

新型汽车刹车制动毂疲劳试验机采用电磁激励方式，应用机械系统共振的原理进行刹车制动毂疲劳试验。

According the principle of sympathetic vibration the new type brake hub fatigue testing device has the fatigue testing by the way of electromagnetic prompting .

它利用压电陶瓷的逆压电效应将电能转化成超声频微观振动，进一步通过定子将微观机械振动共振放大、叠加，然后摩擦驱动转子（或动子）宏观转动（或直线运动）。

It converts electrical energy to ultrasonic micro vibration using converse piezoelectric effect . The micro vibration then drive rotators ( or movers ) to rotate ( or straightly move ) via friction after being resonant amplified and superimposed .

旋转机械零件避开共振的模糊可靠度

Fuzzy Reliability of Distancing From Resonance of Rotary Machinery Parts

关键词：超音波、阿基里斯腱、机械特性、共振频率。

Keywords : ultrasound , achilles tendon , mechanical properties , resonant frequency .

介绍了旋转机械零件避开共振模糊可靠度计算方法。

This paper introduces that computation method of fuzzy reliability for distancing from resonance of rotary machinery parts .

旋转机械的超谐波共振分析

Superharmonic resonance analysis of rotating machines

圆锯片的振动形式主要有横向振动，扭转振动和径向振动：锯片的工作噪音主要由空气动力性噪音，机械性噪音和共振噪音组成；

The vibration of the circular saw consists of three kinds of vibration : landscape orientation vibration , retortion vibration , radial vibration ;

本方法除适用于目前已广泛用于汽车另部件的共振试验设备以外，还可适用于一般机械另部件的共振试验系统。

It could be applied not only for various resonant test equipment widely used in the fatigue strength test of automobile components , but also for the resonant test equipment of other mechanical components .