3.推力杆该做成多短(或多长)?

推力杆相关问题

The length of the stinger can be an issue in performing a modal test. Given too short of a stinger, the structure will be less decoupled from the excitation system and there will be some dynamic effects of the shaker on the dynamics of the structure. Given too long of a stinger, the stinger will buckle within the frequency range of interest and insufficient force will be transmitted to the structure. The effects of this would be evident in the force transducers power spectrum measurement. Ideally, the stinger is set up to be as long as possible to maintain lateral flexibility but still short enough to transmit axial force without buckling.

进行模态试验时,推力杆的长度会是个问题。推力杆太短,结构被较少地从激励系统上解耦,在结构的动力学特性上将会有一些激振器的动力影响。推力杆太长,推力杆在感兴趣的频率范围内将发生屈曲,没有足够的力传递到结构上去。在力传感器的功率谱测量结果中,这种影响将非常明显。理论上讲,推力杆设置得尽可能的长地保持横向柔度,但仍然足够短的无屈曲地传递轴向力。

(In a future updates of these FAQ, additional information with quantified example data will be provided for further understanding of this topic.)

(在这个FAQ的将来修订版中,将提供合格的例子数据的额外信息来更进一步地理解这个主题。)