It is possible to couple the Lumped Mechanical System interface to several other structural mechanics interfaces through a predefined multiphysics coupling. Add a Lumped–Structure Connection multiphysics node (
) to connect finite element models built using structural mechanics interfaces, to the Lumped Mechanical System interface.
Enter a Name for the lumped-structure connection. The default name (for the first instance) is
lsc1.
Connect to — Set to
External source or
Displacement node depending upon whether an
External Source or a
Displacement Node node is used to connect the lumped system to the finite element model. If you select
External source, corresponding nodes of the selected
Lumped Mechanical System are listed. If you select
Displacement node, corresponding nodes of the selected
Lumped Mechanical System are listed. Note that for an
External Source or
Displacement Node to be listed in the
Lumped–Structure Connection multiphysics coupling node, you need to set the
Input displacement of the respective node to
From multiphysics coupling.
When Connect to is set to
External source, the displacements of two connection points are required to connect the selected
Lumped mechanical system and
Structure. Select them in the
Point Selection, Port-1 and
Point Selection, Port-2 sections, respectively. The displacements of these points are taken as the
Input displacement of the ports of the selected
External Source node. If multiple points are selected in these sections, the
Input displacement of each port is the average displacement of all points in the respective selections.
When Connect to is set to
Displacement node, the displacement of a single connection point is required. This is selected in the
Point Selection, Terminal section. The displacement of this point is taken as the
Input displacement of the terminal of the selected displacement node. In this case,
phase of the displacement node is set to 0. If multiple points are selected in this section, the
Input displacement is the average of all points in the selection.
Select the Direction —
X-axis,
Y-axis,
Z-axis (3D), or
User defined to specify the connection point displacement component that will be used in the
Displacement Node or
External Source nodes. In 2D axisymmetry, the allowed values are
R-axis,
Z-axis, or
User defined. For
User defined, enter the direction vector of the connection point displacement.