The Fluid and Pipe Materials node is the main node in the Pipe Mechanics interface. This is where you enter the material data for both the pipe itself and the fluid contained in the pipe.
It is common that the material data for the fluid and the pipe material are in located in different Material nodes. Only one material can however be assigned to a certain edge. For this reason, the assignment of material data can be made not only using the material assigned to the edge, but by accessing any
Material node present in the component.
By adding the following subnodes to the Fluid and Pipe Materials node you can incorporate many other effects:
For input of the Density,
ρf, select either
From material or
User defined. When using
From material, also select the material to use in the
Fluid material list. This list contains all materials present in the component, as well as the default choice
Edge material. When
Edge material is selected, the material currently assigned to the edge (2D: boundary) is used.
For User defined, enter a value or expression.
If the option From material used for any of the material properties below, you must select a material from the Pipe material list. This list contains all materials present in the component, as well as the default choice
Edge material. When
Edge material is selected, the material currently assigned to the edge (2D: boundary) is used.
From the Specify list, select a pair of elastic properties for an isotropic material. Select:
Define the Density ρ of the material. Select
From material to take the value from the material or
User defined to enter a value for the density.
If a study step is geometrically nonlinear, the default behavior is to use a large rotation formulation for all edges. Select the Geometrically linear formulation check box to always use a small rotation formulation for the edges that have this material assigned, irrespective of the setting in the study step.
