Page 165 - Pressure Vessel Design Manual
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Design of Vessel Supports 143
e Properties of upper ring. e Tension/compression loads in rings. Note: In general the
upper ring is in compression at the application of the loads
and in tension between the loads. The lower ring is in
tension at the loads and in compression between the
loads. Since the governing stress is normally at the loads,
the governing stresses would be:
Upper ring:
T, = c,f cos e
Lower ring:
TT = C,f COS e
where C, is the maximum positive value for TT and the
maximum negative value for T,.
Yl =
e Maximum circumferential stress in shell, ob.
Compression: in upper ring
Tension: in lower ring
Figure 3-26. Properties of upper ring.
e Properties of lower ring.
e Maximum bending stress in shell.
Upper ring:
Lower ring:
MzC2
(rb = ~
I2
e Maximum bending stress in ring.
Upper ring:
Y2 =
Lower ring:
e Thickness of lower ring to resist bending.
Bearing area, Ah:
Figure 3-27. Properties of lower ring. Ab =
