where the product V0A31 is positive.
The configuration is displayed by Fig. 3.12-Right, and dimensionless distribution Tsi(p) by Fig. 3.12.
The central part of the mirror can be considered as infinitely rigid, so that the only reaction to the prismatic ring-force Vr{a} can be generated by a central moment My around the y-axis determined by n/2 2
For practical reasons, the reacting moment can be applied at a small distance from the mirror center where b C a.
The radial and tangential maximum stress or and ot must be lower than the ultimate stress cult of the material. Substituting the Coma 3 flexure mode in (3.1a), we obtain the radial bending moment
The radial maximum stress or = 6Mr/t2, derived with the scaling thickness t0 in (3.45b) and the definition of the rigidity, is
lo where Sr is a dimensionless maximum stress (Fig. 3.13)
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