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Does anyone know where I can find any published data on this subject?

SnTMan, thanksfor your reply. Are you saying that even if I have a calculation to size the fillet welds, and it produces a smaller fillet than UW-16 suggests, I still need to use the UW-16 size as a minimum?

Using ASME VIII Div1 - the weld sizes can be determined by using the rules on sketch (i) of Section UW-16. But is there an actual calculation method used to 'design' the weld size anywhere, as an alternative?

Ok Thanks for your input.

Shell 93 is an 8noded element and we use it as a progression from the 4noded shell63 of old. Using shell 181 which is back to a 4noded element seemed to be a bit of a backward step, which would require a refined mesh at local features.

Cheers Stringmaker. Any reason why shell93 is no longer the way to go?

I am modelling thin shell cylinders in ANSYS v12. Several years ago we used to use 4noded shell63, but changed to the 8noded version Shell93. Now ANSYS seems to have removed shell93 from the help manual(you can still use the element type), and seems to be suggesting that shell181 are the way to...

We are currently designing a vessel using the French PV Code CODAP. Does anybody know if the code covers Local loads on the shell from discrete attachments, because we cannot find a section that seems relevant?

I have a vertical vessel which is 8500mm in diameter, and general wall thickness of 25mm. Pressure is approx 5barg, but there is wind and siesmic acting as external loads. The calcs show the thickness to be more than adequate but client wishes to reduce the plate thickness. I can reduce some of...

I have a vertical vessel to design and need to determine the wind pressure v height but haven't got the code. Can anybody assist??

Well it's a chimney, and the company has been building these for decades, as such theit company procedures are for now, set in stone. There are some other calcs I have come across where the chimney was put through a dynamic analysis in CAESAR II. But still, I would like to get to the bottom of...

I am trying to use Pressure Vessel Design manual by Denis R Moss Procedure 3-8. The period of vibration is s formula for imperial units, and i am struggling a little with my SI units. Does anybody have a worked example (the one in Moss is no good, there's not enough info.), either in...

Not sure dimjim, but yes the vessel is vertical, and is subjected to a combination of vertical load, horizontal shear load, as well as a BM and possibly torsion. We use two methods, an "equivalent area" method and an eccentric load method.

Hi, I am involved in the design of a pressure vessel which has an unpressurised skirt at its base, and is subjected to overturning moments such that the vessel/skirt has a set of holding down bolts. (PCD circa 6000mm). We currently use methods by Dennis R Moss in " Pressure Vessel Design Manual"...

We are designing a PV to PD5500. The Vessel is for Korea where the adjoining pipework will be fitted with JIS B2210 20K flanges. Therefore we require a compatible flange to be connected to our vessel branches. However, PD5500 section 3.8.1 allows the use of BS1560, BS4504, EN1092 and ANSI B16.5...

CAESAR is used as a design tool and forms part of a complete package of calculations to cover the design of the main. We make sure the flexibility analysis conforms to the rules of B31.3 and then move on to cover the finer aspects of the design. For this particular case, assume that it is NOT...

I have been involved in pipe stress analysis for several years in process industries and have used CAESAR as a design tool, and ASME B31.3 as the design code. However, I have come across some calculations for large diameter (1500mm to 3200mm Diam) piping in the Iron & Steel industry, Blast...

I have a client who does not use 'normal' gaskets on his flanges, but applies WEVOPAT instead to the faces. Has anybody ever heard of this or know anything about it, or could point me in the right direction to find out anything about it. I get the impression it is a paste/sealant, and WEVOPAT is...

We are members of the TWI, but although they are invariably an excellent source of information/advice/expertise, on this particular subject they have quoted us a very high price for carrying out testwork on our behalf. Hence, my original request for any generally available data for these materials.

Is there anywhere on the web where I can find Fracture Toughness data for pressure vessel steels such as BS EN10028 P355, or structural steels such as BS EN10025 S275 Etc? We have been carrying out some fracture mechanics work based on Charpy values, and have been asked not to use the...