shiraz883
Automotive
- Nov 15, 2006
- 48
Hi,
I am designing a pressure vessel (waste heat boiler) with EN code - EN12953 and flexible tubesheet design to be verified by FEA using EN code 13445.
Few questions:
1. For design by rule - for shell thickness - I am using PVelite but it has built in EN13445 code not EN12953. Is there a difference in formulae for calculating the shell thickness between these two code numbers quoted?
2. For the FEA, is the methodology from ASME same as EN 13445 code? Can I follow the ASME code (Sec VIII Div.2 part 5) for the method of analysis - i.e. satisfying plastic collapse, local failure, thermal ratcheting and collapse from buckling while taking the stress allowable from EN code?
I also see that some of the EN materials are mentioned in ASME Sec II part D - may be introduced in 2021 - and wondering whether the allowable from the ASME Sec II part D for these EN materials can be used instead of searching through EN code because may be ASME has already done that for the analyst?
Shiraz
Sr. Engineer
I am designing a pressure vessel (waste heat boiler) with EN code - EN12953 and flexible tubesheet design to be verified by FEA using EN code 13445.
Few questions:
1. For design by rule - for shell thickness - I am using PVelite but it has built in EN13445 code not EN12953. Is there a difference in formulae for calculating the shell thickness between these two code numbers quoted?
2. For the FEA, is the methodology from ASME same as EN 13445 code? Can I follow the ASME code (Sec VIII Div.2 part 5) for the method of analysis - i.e. satisfying plastic collapse, local failure, thermal ratcheting and collapse from buckling while taking the stress allowable from EN code?
I also see that some of the EN materials are mentioned in ASME Sec II part D - may be introduced in 2021 - and wondering whether the allowable from the ASME Sec II part D for these EN materials can be used instead of searching through EN code because may be ASME has already done that for the analyst?
Shiraz
Sr. Engineer
