General Spring Supports
Enter general spring support with 6x6 coupled matrix for stiffness, damping and mass, which includes the components related to other degrees-of-freedom with respect to GCS or node's local coordinate system for selected nodes. Replace or delete previously defined general spring support.
Define the general spring support matrix first to enter the general spring supports.
From the Main Menu select Model > Boundaries > General Spring Supports.
Select Geometry > Boundaries > General Spring Supports in the Menu tab of the Tree Menu.
Click 
to the right of General Spring
Supports: Display the General Spring Support Table.
Boundary Group
Name
Select a Boundary Group in which
the specified boundary condition is included. Select "Default"
if Group assignment is unnecessary. Click
to the right to prompt the "Define
Boundary Group" dialog box to add, modify or delete Boundary
Groups.
Options
Add/Replace: Enter or replace new general nodal spring stiffness of selected nodes
Delete: Delete previously entered general nodal spring stiffness of selected nodes
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