Page 174 - Pressure Vessel Design Manual
P. 174
152 Pressure Vessel Design Manual
Step 1 : Compute forces and moments.
FORCES
Lateral force I Fh=chw I
Horizontal shear per lug Vh = FhlN
Vertical force Fv = (1 + Cv)W
Vertical shear per lug V, = FJN
Case 1: Two Lugs Case 2: Two Lugs Case 3: Four Lugs
Inner
VERTICAL LOADS AT LUGS, Q
LONGITUDINAL MOMENT, ML
CIRCUMFERENTIAL MOMENT, M,
Step 2: Compute geometric parameters.
y=RJt I 81 = CImn I 82 = C2Rn I81/82
Step 3: Compute equivalent /3 values (values of CL, Cc, KL, and & from Tables 3-17 and 3-18).
j3 Values for Longitudinal Moment j3 Values for Circumferential Moment
I I I
I
