Contact Sets PropertyManager
Use this PropertyManager to define interaction between solids, shells,
and beams in a mixed mesh. Bonding beams to shells or solid faces is done
automatically for touching components.
Contact
Manually select contact
sets. Select pairs of faces that meet
the specified criteria and create contact sets.
Automatically find
contact sets. Use the automatic detection
tool to find contact sets for touching faces or non-touching faces within
a defined clearance.
The automatic detection tool
may not find all the contact sets you want or it may find extra contact
sets that you do not want. Be sure to review the results then define the
contact sets required for your analysis.
Type
(Visible only when you select Manually
select contact sets.)
Select a contact from
the list of available contact types: No
Penetration, Bonded, Allow Penetration, Shrink
Fit, Virtual Wall
For the Bonded option selected for studies
using mixed mesh, you can click:
Joints
to select beam joints. Available for the Bonded option
for mixed mesh with beams.
Beams
to select beams. Available for the Bonded option for
mixed mesh with beams. Use this option to simulate stiffeners (beams bonded
to shell or solid faces)
Faces for Set
2
. Select faces for Set 2. For Virtual Wall
contact, select the Target Plane
.
Entities in the Set
1 and Set 2
may not belong to the same component, body, or shell (self contact
is not allowed.
Options
(Visible only when you select Automatically
find contact sets.)
Touching faces.
Finds contact sets between touching faces for components you select.
Non-touching
faces. Finds contact sets between faces within a specified minimum
and maximum distance for components you select. ![](../art_local/example_btn.gif)
Units
. Sets the units for clearance distances.
Minimum clearance
. Sets the minimum clearance between non-touching faces.
Face pairs closer than this distance do not appear as a tentative contact
set.
Maximum clearance
. Sets the maximum clearance between non-touching faces.
Face pairs further apart than this distance do not appear in the tentative
contact pairs list.
If you select Non-touching
faces and type 0 for Minimum clearance
,
the software finds all faces that are not touching and within the Maximum clearance
.
Components
Select Components
or Bodies. Select the components or bodies to evaluate for possible
contact sets. To select the entire assembly, use the flyout
FeatureManager
tree.
Find contacts with
the rest of the assembly. Select a
single component or body and let the program find the
contact sets for touching faces of neighboring components.
Find faces.
Click to find face pairs between the selected components that meet the
specified criteria.
Results
Tentative contact
sets. The possible contact sets that the software finds appear
here.
Type.
Select a tentative contact set, then set the type of contact between the
faces. The available contact types depend on the active study type.
Options.
Depending on the type you select, set the options.
Create contact
sets. Creates a contact set between the selected faces with the
type and options you selected.
Delete contact
sets. Deletes the selected tentative contact set from the list.
Transparent view.
Select to make the faces of the components of the selected contact set
transparent. This facilitates easier viewing of the tentative contact
set.
Properties
Friction. Specify a value for the Friction
Coefficient
for use with No
Penetration contact for static, nonlinear, and drop test studies
as well as Shrink Fit contact for static and nonlinear studies. You
can specify values up to 1.0. This local value overrides the global friction
coefficient specified in the Static dialog
box for static studies. For nonlinear studies, the default coefficient
is 0.05.
Gap (clearance).
Set the condition for ignoring clearances. Used with Node
to Surface and Surface to Surface
options for No penetration and
Virtual wall contact for static
studies only. This local setting overrides the global setting specified
in the Static dialog box.
Thermal Resistance.
Used with the Thermal Resistance option
to define thermal resistance for thermal studies.
Units
. Select the unit system. You can specify the total or distributed
resistance value.
Total.
Type the value of the total thermal resistance between the Set
1 and Set 2 entities.
Distributed.
Type the value of the resistance per unit contact area.
Wall Type
(Visible only when you select a Virtual
Wall contact.)
Wall Stiffness
(Visible
only when you select a Virtual Wall
contact.)
Specify parameters for a Flexible
wall type.
Units
. Select the unit system you want to use to enter the wall
stiffness values.
Axial Stiffness
. Sets the value of the wall axial stiffness.
Tangential
Stiffness
. Sets the value of the wall shear stiffness.
Advanced
(Visible only when you select No penetration
contact.)
Node
to node. Requires compatible meshes
for Set 1 and Set 2 entities and allows faces only for the Set 1. Available
for touching contact faces only. For modal time history studies, only
this option is available.
Node
to surface. Does not require compatible
meshes for Set 1and Set 2 entities.
Surface
to surface. Does not require compatible
meshes for Set 1 and Set 2 entities.
Related Topics
Types
of Contact