Structure–Pipe Connection
Add the Structure–Pipe Connection multiphysics coupling node () to create transitions between edges modeled using the Pipe Mechanics interface and domains or boundaries modeled using the Solid Mechanics or Shell interfaces in 3D.
The multiphysics coupling is intended for situations where the cross-sectional properties match on both sides of the connection. It can be considered as an extension to the transition type couplings in Solid–Beam Connection and Shell–Beam Connection that also accounts for radial deformation of the pipe caused by the fluid pressure and the temperature difference over the cross section.
Coupled Interfaces
Select Structure — Solid Mechanics or Shell.
Select the Pipe Mechanics interface to couple.
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The connection assumes that the pipe cross section is circular. If another cross section is used, it is converted to an equivalent circular cross section
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For user defined pipe cross sections, the effects of fluid pressure and temperature are not considered
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Warping is not considered
For more information about coupling different element types, see Coupling Techniques.
These types of couplings will commonly generate many constraints, possibly even conflicting with other constraints coming from ordinary boundary conditions. For methods of resolving potential problems, see
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Elemental and Nodal Constraints
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Suppressing Constraints on Lower Dimensions
When there are many interconnected constraints, it may also be useful to change Null-Space Function to Orthonormal or Explicit — Orthonormal, but doing so may increase the memory consumption significantly.