Jan 29, 2024 #1 MG83 Mechanical Feb 16, 2019 20 0 0 DE Hi Please tell me in order to evaluate elastic-plastic ratcheting in a vessel, which kind of load should be considered, Design pressure or operating pressure? Thanks
Hi Please tell me in order to evaluate elastic-plastic ratcheting in a vessel, which kind of load should be considered, Design pressure or operating pressure? Thanks
Jan 29, 2024 #2 TGS4 Mechanical Nov 8, 2004 3,891 0 36 CA What is your Code of Construction? What does your Code of Construction say? Upvote 0 Downvote
Jan 31, 2024 Thread starter #3 MG83 Mechanical Feb 16, 2019 20 0 0 DE Asme viii div2 part5 elastic-plastic ratcheting Upvote 0 Downvote
Jan 31, 2024 #4 TGS4 Mechanical Nov 8, 2004 3,891 0 36 CA Operating loads: pressure, temperature (including transient thermal gradients), static pressure, etc. Upvote 0 Downvote
Operating loads: pressure, temperature (including transient thermal gradients), static pressure, etc.
Jan 31, 2024 Thread starter #5 MG83 Mechanical Feb 16, 2019 20 0 0 DE Sorry would you tell me the reference code? And Why we use design loads for elastic ratcheting criteria (PL+Pb+Q) instead of operating loads related to your answer for elastic-plastic analysis? Upvote 0 Downvote
Sorry would you tell me the reference code? And Why we use design loads for elastic ratcheting criteria (PL+Pb+Q) instead of operating loads related to your answer for elastic-plastic analysis?
Jan 31, 2024 #6 DriveMeNuts Mechanical May 4, 2018 447 0 0 GB It is you who has to select the design code. If you were to select the design code, you would likely find your answer in that design code. Upvote 0 Downvote
It is you who has to select the design code. If you were to select the design code, you would likely find your answer in that design code.
Jan 31, 2024 Thread starter #7 MG83 Mechanical Feb 16, 2019 20 0 0 DE Design code is asme viii-2. I want the exact paragraph that mentioned operating pressure for ratcheting . I can't find that in 5.5.7 Upvote 0 Downvote
Design code is asme viii-2. I want the exact paragraph that mentioned operating pressure for ratcheting . I can't find that in 5.5.7
Jan 31, 2024 #8 TGS4 Mechanical Nov 8, 2004 3,891 0 36 CA It's not noted in 5.5.7. Please submit a request to the Code Committee to get that fixed (it should be fixed). But see 5.5.6.1(b). And in the context of elastic ratcheting, check out Table 5.3, lines 10-17. If you submitted a Code Interpretation, you would get the same answer (likely from me...). Upvote 0 Downvote
It's not noted in 5.5.7. Please submit a request to the Code Committee to get that fixed (it should be fixed). But see 5.5.6.1(b). And in the context of elastic ratcheting, check out Table 5.3, lines 10-17. If you submitted a Code Interpretation, you would get the same answer (likely from me...).
Feb 1, 2024 Thread starter #9 MG83 Mechanical Feb 16, 2019 20 0 0 DE Thank you so much. It was very important for me because in my case, the pressure difference in design and operating mode was very high. Upvote 0 Downvote
Thank you so much. It was very important for me because in my case, the pressure difference in design and operating mode was very high.