Posted by: Wei Rong
Trunnion local stress evaluation - 12/20/06 11:59 AM
Local stress evaluation:
when evaluating local stress at trunnion(pipe to pipe), Longitudinal stress SL and circumferential stress SC are calculated per WRC 107. I am asking how to combine these local stress with CAESAR stress and what are the allowables to use.
IMHO, I evaluated in 3 load cases
1. SUSTAINED
SL(CAESAR)+ SL(WRC) < SH
2. Expansion
SE(CAESAR)+ sqrt(SL(WRC)^2+SC(WRC)^2) < SA + SH - SL(SUSTAINED)
3 OCCASIONAL
SB(CAESAR)+SL(CAESAR)+SL(WRC) < 1.33 SH
What should I check circumferential stress with ?
would like to have some input from you guys. Thanks in advance.
when evaluating local stress at trunnion(pipe to pipe), Longitudinal stress SL and circumferential stress SC are calculated per WRC 107. I am asking how to combine these local stress with CAESAR stress and what are the allowables to use.
IMHO, I evaluated in 3 load cases
1. SUSTAINED
SL(CAESAR)+ SL(WRC) < SH
2. Expansion
SE(CAESAR)+ sqrt(SL(WRC)^2+SC(WRC)^2) < SA + SH - SL(SUSTAINED)
3 OCCASIONAL
SB(CAESAR)+SL(CAESAR)+SL(WRC) < 1.33 SH
What should I check circumferential stress with ?
would like to have some input from you guys. Thanks in advance.