Problem:
How to model gusset supports on branch piping using AutoPIPE?
Example:
Solution:
In short, this modeling approach will focus on adding a beam section from the surface of the header pipe to the surface of the branch pipping. Then insert a beam section between the surface points established.
Steps to repeat:
- Quantify the dimension of the gusset center interface with both the header pipe and branch piping
- Insert a node point on the header pipe at the distance X in the +ve (a) and -ve (b) directions.
- Insert a node point on the branch piping distance Y (c) from the header pipe
- Recall that AutoPIPE does not have a concept of pipe surface in the model UI. Therefore, the surface points need to be defined. Insert a rigid beam between the new header pipe node points (a and b) to the surface of the header pipe.
- Note: Beam definition should ignore weight. Therefore, suggest using Rigid Beam section ID 0, and change the size to be an appropriate size for the model geometry (ex, Shape = Pipe, size = 2" OD, thickness = 0.5")
- Move to the new branch pipe node point (c) and insert a rigid beam to the surface of the pipe in both the +ve and -ve directions parallel to the header pipe.
- Note: Suggest using Beam Id in previous step.
- Define a new Gusset Beam ID with properties used in design.
- Insert beam, connect surface of header pipe defined to surface of branch pipe defined.
- Repeat step above for gusset on the opposite side of branch piping
- Done.
Make any adjustment to the Beam Id definitions, or surface connection points as needed to closely mimic actual gusset support design.
Options:
This is one modeling approach. Can it be modified? of course!
What additional considerations can be taken?
a. Following the techniques used in the Vessel Modeling approach in Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Vessel, insert a nozzle element at the surface of the pipe to take credit for the flexibility of the pipe wall.