The following message appears:
LOCAL LOADS (Cylindrical SHELL Tb1): PD 5500 Figure G.2.2-18 deflections of cyl. shells due to radial loads, values beyond curve boundaries (r/t=30,5 , L/r=1,573771)", i would like to know, what does it mean "PD 5500 Figure G.2.2-18
Why is the message appearing and how to avoid it?
All of the design codes have some dimensional parameters based on vessel geometry which needs to be within boundaries to use the aforementioned methods.
As the error message above indicates:
Local loads - type of calculation being performed.
(Cylindrical SHELL Tb1): - the issue is related to Cylindrical shell with item number TB1
Designation = Cylindrical SHELL
tag = TB1:
PD5500 Figure G.2.2-18 see figure from respected code
Note: This graph was located on page G/25 of BS PD 5500 - 2012+A3 2014
(r/t=30,5 , L/r=1,573771) - AutoPIPE Vessel calculated dimensionless ratios:
- r/t=30,5 however graph range = 15 to 40
- L/r=1,573771 however graph range = 3 to 20 (Value is outside of range, Error)
Therefore you have the following options:
Option #1: Modify the parameters of the model in order for the dimesionless ratios to be within graph ranges
Option #2: Change the designing method to a different local method in AutoPIPE Vessel
Option #3: Use a Finite Element Analysis. AutoPIPE Vessel has interface with NozzlePro.
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