Frequency change due to bearing backlash

[csngan]

I have a polar mounted tank with spherical bearing at both ends. The backlash inside the bearing is in the order of 10 micron. How can I determine the effect of the backlash on the frequency of the tank with the bearings ? My reference frequency would be that of a hardmounted tank without bearing. Al other possible defects in the bearing are not considered for the time being; the bearings and the tank are assumed to be of the same material.

Any hints will be highly appreciated.

Cheers,
ngan

 

[GregLocock]

A significant clearance will cause an amplitude related non-linearity in the response.

If this hardware is for real then do a modal analysis on it.

Cheers

Greg Locock

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