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3.4.3 Calculation of a ring flexibility

A ring flexibility can be evaluated by the following formulae (see Fig.6):,



D1, D2 - ring inner and outer diameters;

b - ring width;

s - ring thickness.


d - maximal displacement (equal to a center pedestal height);


A - Young module;

n - number of center pedestals ;

d - milling cutter diameter;

b1 - center pedestal width.

Stress in the ring is calculated by the formulae

The fatigue safety factor is calculated by a formulae similar to a flexible element one

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