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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):,

where

;

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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