How to model an Anchor flanges ?
Anchor flanges are considered to be buried within concrete.
A. On the segment where the flange is to be modeled, insert a node point (ex. B04) as the welded connection between the pipe and flange
B. Insert a Pipe run half the total length of the anchor flange (ex. B05).
C. Insert another Pipe run with the same length as in Step B above (ex. B06).
D. Select the middle point of the flange (ex. B05), insert a flange component. On the flange dialog, change Joint End Type = "User Defined", set "Joint SIF" = 1.0 (note: can use any joint end type connection so long as the SIF calculated is 1.0 at the flange point)
E. Select both pipe runs (ex. B04-B05 & B05-B06), press Insert > Rigid options over Range (Include Weight = off, Include Thermal Expansion = off...pipe will be shown purple), and press OK button
F. Select both flange end points (ex. B04 & B06), Press Insert > Xtra Data> Joint Type user SIF. Select the correct type of end connection or enter a user SIF.
G. Connection to support: choose one of the following, model connection as simple supports or model with soil properties
i. Model connection as simple support: add additional node points (ex. B03 & B07) with rigid pipe properties as done is step E to represent pipe entombed in concrete. At the locations where the pipe enters the concrete add AutoPIPE supports or anchors as needed.
ii. Model connection with soil properties: add additional node points to represent pipe entombed in concrete. Insert Soil properties over same node points added. Select all the pipe with in the concrete and apply the correct soil properties to mimic concrete.
Flange Piping Components - Modeling Approaches, Tips, Techniques
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