Design of flange lugs
Design of flange lugs
(OP)
Colleagues,
to design a base plate for a top flange lug, I want to use formulas for flat circular plates of constant thickness of Roark's Formulas for Stress and Strain Ed. VII.
Which condition I need to considerer for this calculation: edge simply supported (like cases 16 and 20 of Roark Ed. VII – Table 11.2) or edge fixed (like cases 17 and 21 of Roark Ed. VII – Table 11.2)?
Regards....
to design a base plate for a top flange lug, I want to use formulas for flat circular plates of constant thickness of Roark's Formulas for Stress and Strain Ed. VII.
Which condition I need to considerer for this calculation: edge simply supported (like cases 16 and 20 of Roark Ed. VII – Table 11.2) or edge fixed (like cases 17 and 21 of Roark Ed. VII – Table 11.2)?
Regards....





RE: Design of flange lugs
Pressure? Temperature? Service use? Fluid? Tank material?
RE: Design of flange lugs
You can look ata ASME VII 1 or many soft for pressure vessel design.
It is a good practice to read a lot about what has been already done about your questions.
Please follow that way to get better profit
Regards
Luis
RE: Design of flange lugs
I want to calculate the blind cover of a lifting lug to use for lifting a vessel. The blind cover is bolted to a top vessel flange. I need to know which condition I have to use: edge simply supported or edge fixed as boundary conditions for my model.
RE: Design of flange lugs
Table 7-9 Pressure Vessel Design Manual, 3rd ed. by Dennis Moss
Load Capacity (tons) / flange base plate thickness
50 / 2
100 / 3
200 / 4
400 / 5
600 / 6
800 / 7
The design of the Lug Base Plate is per Roark, 4th Edition Table III, Case 34.
Remember to check your actual nozzle/flange/shell stresses.