Products
Abaqus/Standard
Abaqus/Explicit
Abaqus/CAE
Type
Model data in Abaqus/Standard; Model or history data in Abaqus/Explicit
LevelModel in Abaqus/Standard; Model or Step in Abaqus/Explicit
Abaqus/CAE
Interaction module
Required parameters
-
PROPERTY
-
Use this parameter to specify the property type being assigned. To modify more than
one type of surface property, include the SURFACE PROPERTY ASSIGNMENT
option more than once with different values for this parameter.
Set
PROPERTY=BEAM SMOOTHING
to control smoothing of beam segments in beam-to-beam contact. This parameter value
applies only to Abaqus/Standard analyses.
Set
PROPERTY=CRUSH TRIGGER
to control crush initiation of a crushable surface. This parameter value applies only
to Abaqus/Explicit analyses.
Set
PROPERTY=DISTRIBUTION FACTOR
to specify the preferred fraction of frictional work directed to this surface. This
parameter value applies only to Abaqus/Explicit analyses.
Set
PROPERTY=FEATURE EDGE CRITERIA
to control which primary feature edges and secondary feature edges should be activated
in the general contact domain.
Set
PROPERTY=FRICTION
to assign a surface-based friction coefficient. This parameter value applies only to
Abaqus/Explicit analyses.
Set
PROPERTY=GEOMETRIC CORRECTION
to assign geometric corrections.
Set
PROPERTY=OFFSET FRACTION
to assign the surface offset as a fraction of the surface thickness.
Set
PROPERTY=ORIENTATION
to assign a coordinate system for local tangent directions to the surface and/or
specify preferential frictional directions to the surface in the context of
surface-based anisotropic friction. This parameter value applies only to Abaqus/Explicit analyses.
Set
PROPERTY=THICKNESS
to assign the surface thickness.
Set
PROPERTY=VERTEX CRITERIA
to control which nodes of feature edges should be considered vertex nodes in the
general contact domain. This parameter value applies only to Abaqus/Standard analyses.
Optional parameters
-
DEFINITION
-
This parameter is relevant only for surface properties defined using
PROPERTY=GEOMETRIC CORRECTION.
Set
DEFINITION=COORDINATES
(default) to define the parameters for the geometry correction by giving the
coordinates of one or more points, depending on the surface shape.
Set
DEFINITION=NODES
to define the parameters for the geometry correction by giving the global number of
one or more nodes, depending on the surface shape.
-
FRICTION ANISOTROPY
-
This parameter applies only to Abaqus/Explicit analyses with
PROPERTY=ORIENTATION.
Set
FRICTION ANISOTROPY=EPSILON
(default) to define the frictional directional preference factor
on the data lines.
Set
FRICTION ANISOTROPY=RATIO
to define the ratio r on the data lines.
Data lines for
PROPERTY=BEAM SMOOTHING
- First line
-
-
Surface name.
-
A scalar value between 0.0 and 0.5 (0.2 is the default).
Repeat this data line as often as necessary. If the beam smoothing
assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=CRUSH TRIGGER
- First line
-
-
Surface name or material name.
-
Specify TRIGGER (default), NO
TRIGGER, or NO CRUSH. If
NO TRIGGER or NO
CRUSH is specified, no further entries are needed.
-
A scalar value representing the stress required to initiate crushable behavior as
a factor of the crush stress (CRUSH STRESS) defined on
the material associated with the surface.
- Crush initiation
angle.
- Crush continuation
angle.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the crush trigger
assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=DISTRIBUTION FACTOR
- First line
-
-
Surface name or material name.
-
Preferred fraction of frictional work of an interaction directed to this surface.
The default value is 0.5.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the distribution
factor assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=FEATURE EDGE CRITERIA
in Abaqus/Standard
- First line
-
-
Surface name or material name. If this entry is omitted, a default surface that
encompasses the entire general contact domain is assumed.
-
A scalar value between 0° and 180° representing the cutoff feature angle (in
degrees), PERIMETER EDGES, or NO
FEATURE EDGES. The default is 45°. This field activates edges
to participate in edge-to-surface contact.
-
This field is intentionally left blank and is unused.
-
A scalar value between 0° and 180° representing the cutoff feature angle (in
degrees), PERIMETER EDGES, or NO
FEATURE EDGES. The entry on this field activates edges to
participate in edge-to-edge contact. The default is NO FEATURE
EDGES.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the feature edge
criteria assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=FEATURE EDGE CRITERIA
in Abaqus/Explicit
- First line
-
-
Surface name or material name. If this entry is omitted, a default surface that
encompasses the entire general contact domain is assumed. A non-blank entry is
required if the ALL EDGES or
PICKED EDGES options are specified for the
second entry and ORIGINAL is in effect for the
fifth entry.
-
The criterion for primary feature edges. A scalar value representing the cutoff
feature angle in degrees (the default value is 30° if
CURRENT is specified for the fifth entry),
PERIMETER EDGES (the default option if
ORIGINAL is in effect for the fifth entry),
ALL EDGES, PICKED
EDGES, or NO FEATURE EDGES.
-
The criterion for secondary feature edges. A scalar value representing the
cutoff feature angle in degrees (the default is 20° if
CURRENT is specified for the fifth entry),
ALL REMAINING EDGES, PERIMETER
EDGES, or PICKED EDGES. The
default secondary feature edge criterion matches the primary feature edge
criterion if ORIGINAL is in effect for the fifth
entry.
- This field is intentionally
left blank and is unused.
- The word
ORIGINAL (default except when ALL
EDGES is specified for the second entry) to apply feature edge
criteria statically or the word CURRENT to apply
feature edge criteria for this surface dynamically.
-
This field is intentionally left blank and is unused.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the feature edge
criteria assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=FRICTION
- First line
-
-
Surface name or material name.
-
Surface-based friction coefficient.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the feature edge
criteria assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=GEOMETRIC CORRECTION,
DEFINITION=COORDINATES
to define smoothing on regions of surfaces
- First line
-
-
Surface name.
-
Specify CIRCUMFERENTIAL,
SPHERICAL,
TOROIDAL,
NONE, or leave blank. If
NONE or blank is specified, no further entries
are required.
-
Global X-coordinate of point a (see
Figure 1 through Figure 4, depending on surface shape).
-
Global Y-coordinate of point a.
-
Global Z-coordinate of point a (only
for three-dimensional).
-
Global X-coordinate of point b (only
for three-dimensional circumferential or toroidal; see Figure 2 or Figure 4, depending on surface shape).
-
Global Y-coordinate of point b (only
for three-dimensional circumferential or toroidal).
-
Global Z-coordinate of point b (only
for three-dimensional circumferential or toroidal).
-
Distance R (only for three-dimensional toroidal; see Figure 4).
Repeat this data line as often as necessary. If the geometry
correction assignments overlap, the last assignment applies in the overlap region. For
toroidal shapes the line joining point a and the center of the
circular arc should be perpendicular to the axis of revolution.
Data lines for
PROPERTY=GEOMETRIC CORRECTION,
DEFINITION=NODES
to define smoothing on regions of surfaces
- First line
-
-
Surface name.
-
Specify CIRCUMFERENTIAL,
SPHERICAL,
TOROIDAL,
NONE, or leave blank. If
NONE or blank is specified, no further entries
are required.
-
Node number of the node at point a (see Figure 1 through Figure 4, depending on surface shape).
-
Node number of the node at point b (only for
three-dimensional circumferential or toroidal; see Figure 2 or Figure 4, depending on surface shape).
-
Distance R (only for three-dimensional toroidal; see Figure 4).
Repeat this data line as often as necessary. If the geometry
correction assignments overlap, the last assignment applies in the overlap region. For
toroidal shapes the line joining point a and the center of the
circular arc should be perpendicular to the axis of revolution.
Data lines for
PROPERTY=OFFSET FRACTION
- First line
-
-
Surface name or material name. If this entry is omitted, a default surface that
encompasses the entire general contact domain is assumed. Faces specified on
elements other than shell elements, membrane elements, rigid elements, and surface
elements will be ignored.
-
ORIGINAL (default),
SPOS, SNEG, or
a value between –0.5 and 0.5. The offset defines the distance (as a fraction of
the thickness) from the midsurface to the reference surface (containing the nodes
of the element). Positive values of the offset are in the positive element normal
direction. The default is ORIGINAL, which
indicates that the offset specified in element section definitions (via the
OFFSET parameter on SHELL SECTION or RIGID BODY) will be used.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the offset fraction
assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=ORIENTATION
- First line
-
- Surface name or material
name.
- A valid orientation system
name. If the orientation system name is omitted or the surface is an analytic rigid
one, a default orientation is used.
- Scalar value of the extra
rotation (in degrees) applied to the orientation system once it has been projected
to the surface. The default value is 0.
- Scalar value of the
frictional directional preference factor
(within the range –1.0 to 1.0, default 0.0) or the friction
coefficients ratio r (greater than 0.0, default 1.0) depending
on the value of the
FRICTION ANISOTROPY parameter.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the directional
preference assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=THICKNESS
- First line
-
-
Surface name or material name. If this entry is omitted, a default surface that
encompasses the entire general contact domain is assumed.
-
ORIGINAL (default),
CURRENT (available only in Abaqus/Explicit), THINNING (available only in Abaqus/Explicit), or a scalar value representing a nominal thickness.
-
A constant scaling factor (default is 1.0).
-
Specify SURFACE (default), or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the thickness
assignments overlap, the last assignment applies in the overlap
region.
Data lines for
PROPERTY=VERTEX CRITERIA
- First line
-
-
Surface name or material name. If this entry is omitted, a default surface that
encompasses the entire general contact domain is assumed.
-
ALL VERTICES, NO
VERTICES, or a scalar value between 10° and 90° representing
the vertex angle threshold (in degrees). The default is 20°. This field activates
vertex nodes to participate in vertex-to-surface contact.
-
Specify SURFACE (default) or omit if the first
entry is a surface name. Specify MATERIAL if the
first entry is a material name.
Repeat this data line as often as necessary. If the vertex criteria
assignments overlap, the last assignment applies in the overlap
region.
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