In One of my calc,
The Nozzle thk = Shell wall thickness
and d/t<20, so the nozzle is almost rigid and hence one of the conditions of WRC-297 is not satisfied.
But when I use WRC-297 in C-2, the stiffness values are extrapolated and calculated, which qualifies the nozzle with the allowable loads of the vendor.
Our company does not have FE softwares...
Can the results by C-2 be used to qualify the system ?
VESSEL Dmean(mm.)= 1595.000 VESSEL THK. (mm.)= 55.000
NOZZLE O.D. (mm.)= 589.600 NOZZLE THK. (mm.)= 55.000
AXIAL TRANSLATIONAL STIFFNESS ( N./mm. )= 1846560.
LONGITUDINAL BENDING STIFFNESS (N.m./deg )= 5457731.
CIRCUMFERENTIAL BENDING STIFFNESS (N.m./deg )= 943248.
As seen the stiffness values are almost in the order of 10E+6
Mentors Please comment....
Regards,
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SKK