5.标准推力杆可以吸收多少度的不对中?不准确度有多大?

推力杆相关问题

The stinger is intended to be used to transmit force only along the axis of the stinger. It is very difficult to identify the exact level of inaccuracy that can be absorbed by a stinger. The thicker the stinger, the more misalignment it can physically support, but the more transverse force will be input into the system resulting in measurement error. The thinner the stinger, the more likely that any misalignment will bend the stinger, damaging it. However, since stingers are (relatively) inexpensive and intended to essentially be a mechanical fuse in your test setup, it is better to have an error in this direction. If you continue to bend stingers, damaging them beyond future use, it would follow that you have too much misalignment. At some point the quality of the measured data is suspect as well; however, this is dependent not just on the stinger but also on the structure under test and the frequency range to be considered.

推力杆的目的是用来传递仅仅沿着推力杆轴向的力。很难确定推力杆可以吸收的不准确度的精确程度。推力杆越粗,物理上,它可以支持更多的不对中,但是有更多的横向力会输入到系统,产生测量误差。推力杆越细,任何的不对中更有可能导致推力杆弯曲,损坏它。但是,因为推力杆(相对)不贵,旨在作为你试验中的机械保险措施,这个方向性最好有个误差。如果你连续弯曲推力杆,未及更久使用,就损坏了它们,由此可以得出结论这里有更严重的不对中。有时也怀疑所测数据的质量;但是,这不仅仅取决于推力杆,还取决于被测结构及考虑的频率范围。

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

(为了进一步理解这个主题,在这些FAQ的将来升级版本中,将提供一些合格的样本数据的附加信息。)