6.什么时候用铝合金管套在尼龙10-32螺纹推力杆上?

推力杆相关问题

The aluminum composite tube around the threaded rod is intended to provide additional stiffness to the stinger. Often times these are shipped together and they are installed and used as is for modal testing. Many times the aluminum composite tube provides too much lateral stiffness and may cause distortion of the measurement system. One way to determine the effect is to test the structure with and without the aluminum composite tube and further compare these results with a longer stinger configuration. If there is no difference in any of the measured drive point frequency response functions then there is no concern. But if there are differences, then assessment of the measured functions and which stinger system is most appropriate for the modal test needs to be identified.

套在螺纹杆外面的铝合金管的目的是给推力杆提高附加的刚度。有时他们一起运输给客户,它们装在一起,“按现状”用于模态分析。很多时候,铝合金管提供太大的横向刚度,可能引起测试系统的失真。确定这种影响的一种办法是,在有和没有铝合金管的条件下测试结构,下面将这些结果跟长推力杆进行比较。如果在任何所测的驱动点频响函数中没有差别,那么没有问题。但是如果有差别,那么需要评估所测的频响函数,确定哪个推力杆系统最适合于模态试验。