In general, user-specified nodal coordinates are not modified during input
file processing. However, there are some situations where mesh coordinates are
known only in a generic way and it is inconvenient to determine their
coordinates for their actual usage. For example, when using fasteners the
specified reference node should be positioned at its projection point on the
associated surface. Since that location may be known only approximately, you
can use nodal adjustment to move the reference node to that location
automatically.
For typical usage of the nodal adjustment feature,
refer to
About assembled fasteners.
When using this feature, the nodes are adjusted to lie on the specified
surface without regard for shell thickness or shell offsets. Therefore, it is
not advisable to use this feature as a way of correcting initial overclosures
for contact or for tie constraints. In addition, care should be taken when
choosing the nodes to be adjusted because the feature does not respect any
constraints relating the relative position of the adjusted node with other
nodes (e.g., rigid body definitions).
Input File Usage
Use the following option to identify the nodes to be moved and
the surface onto which the nodes are to be moved:
ADJUST, NODE SET=name, SURFACE=name
Abaqus/CAE Usage
Use the following option to move the control point of a coupling
constraint onto the coupling surface:
Interaction module: : Coupling; Adjust control point to lie on surface
Use the following option to move any point or points onto any
surface:
Interaction module: : Adjust points