ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE
TypeModel data in Abaqus/Standard; History data in Abaqus/Explicit
LevelModel in Abaqus/Standard; Step in Abaqus/Explicit
Abaqus/CAEInteraction module
Required parameters
- CPSET
This parameter applies only to
Abaqus/Explicit
analyses.
Set this parameter equal to the name of the contact pair set name to
associate these clearance data with the appropriate contact pairs.
- MASTER
This parameter applies only to
Abaqus/Standard
analyses.
Set this parameter equal to the name of the master surface of the contact
pair.
- SLAVE
This parameter applies only to
Abaqus/Standard
analyses.
Set this parameter equal to the name of the slave surface of the contact
pair.
Required, mutually exclusive parameters
- TABULAR
Include this parameter to specify the slave nodes or the node sets and their
corresponding initial clearance/overclosure values (and, if required, contact
directions) on the data lines of this option. In an
Abaqus/Explicit
analysis only initial clearances are allowed.
- VALUE
Set this parameter equal to the initial clearance/overclosure for the entire
set of slave nodes. In
Abaqus/Standard
a positive value specifies an initial clearance, and a negative value specifies
an initial overclosure. In an
Abaqus/Explicit
analysis this value must be positive since only initial clearances are allowed.
Optional parameters when the TABULAR parameter is included
- BOLT
Include this parameter to indicate that the appropriate contact normal
directions for a threaded bolt connection will be generated automatically based
on thread geometry data and two points used to define a direction vector on the
axis of the bolt and bolt-hole assembly specified on the data lines. This
parameter is valid only for single threaded bolts.
- INPUT
Set this parameter equal to the name of the alternate input file containing
the data lines for this option. See
Input Syntax Rules
for the syntax of such file names. The data lines in the alternate input file
should be in the same format as that for the TABULAR parameter.
If this parameter is omitted and the TABULAR parameter is included, it is assumed that the data follow the
keyword line.
Data lines if the
TABULAR parameter is included with neither the INPUT parameter nor the BOLT parameter
- First line
Node number or node set label.
Clearance value. (In an
Abaqus/Standard
analysis a positive value indicates an opening between the surfaces and a
negative value indicates overclosure.) If this field is left blank, the
clearance value automatically calculated will not be modified.
First component of the normal.
Second component of the normal.
Third component of the normal.
Repeat the above data line as
often as necessary to define the clearance value and the direction in which
Abaqus
tests for contact between the slave node and the corresponding closest point on
the master surface. The specification of the normal is optional. If the normal
is given, it should be in the direction of the master surface's outward normal.
If the normal is not given,
Abaqus
calculates it from the geometry of the master surface (see
Common difficulties associated with contact modeling in Abaqus/Standard
and
Common difficulties associated with contact modeling using contact pairs in Abaqus/Explicit).
Data lines if
both the TABULAR parameter and the BOLT parameter are included without the INPUT parameter (see figures below)
- First line
Half-thread angle, α, (in degrees).
Pitch (thread-to-thread distance), p.
Bolt major thread diameter, d. If the mean diameter is
given, the major diameter is ignored.
Bolt mean thread diameter, dm. The default value is
d-0.649519p.
- Second line
Node number or node set label.
Clearance value. (In an
Abaqus/Standard
analysis a positive value indicates an opening between the surfaces and a
negative value indicates overclosure.) If this field is left blank, the
clearance value calculated automatically will not be modified.
X-coordinate of point a along the
axis of the bolt/bolt hole.
Y-coordinate of point a along the
axis of the bolt/bolt hole.
Z-coordinate of point a along the
axis of the bolt/bolt hole.
X-coordinate of point b along the
axis of the bolt/bolt hole.
Y-coordinate of point b along the
axis of the bolt/bolt hole.
Z-coordinate of point b along the
axis of the bolt/bolt hole.
Repeat the second data line as
often as necessary to define the clearance value and the direction vector on
the axis of the bolt and bolt-hole assembly that
Abaqus
uses to calculate the contact normal directions based on the thread geometry
(see
Adjusting initial surface positions and specifying initial clearances in Abaqus/Standard contact pairs
and
Specifying initial clearance values precisely).
To define a
clearance value by using the VALUE parameter
No data lines are used
with this option when the VALUE parameter is specified.