Interfaces solve the contact and impact conditions between two parts of a model. Several interface types are available in RADIOSS and use different contact treatments. Each of these interfaces was developed for a specific application field. However, this application field is not the only selection criteria. Some limitations of the different algorithms used in each interface can also determine the choice.
Contact Treatment |
|
Types |
Application |
Description |
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Kinematic Constraint |
Tied |
Change of mesh density (solid) |
Tied connection between two Lagrangian materials. |
|
Penalty Method |
Slide / Void |
Use of TYPE7 is recommended |
Sliding with void opening and friction between two Lagrangian surfaces. Symmetric computation (J. Hallquist algorithm). |
|
Slide / Void |
Use of TYPE7 is recommended |
Sliding with void opening and friction between two Lagrangian surfaces. Non-symmetric computations (master-slave algorithm). |
||
Slide / Void |
User-defined contacts |
Impact contact between two rigid surfaces. |
||
Slide / Void |
Solid contact impact at all speeds |
Multipurpose interface. Can be used in place of TYPE3 or TYPE5. Node to Segment contact. |
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Slide |
Stamping applications |
Drawbead line. |
||
Tied / Void |
Special purpose interface |
Tied contact + void opening (optional) |
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Slide / Void |
For beams, bars or springs |
Edge to Edge contact. |
||
Slide / Void |
For MADYMO to RADIOSS coupling. |
Hyper-ellipsoid to nodes contact |
||
Slide / Void |
For MADYMO to RADIOSS coupling. |
Hyper-ellipsoid to elements contact |
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Slide / Void |
Solid contact impact at all speeds and for beams, bars or springs. |
General contact interface. Node to segment contact and Edge to Edge contact. Equivalent to one interface TYPE7 + one interface TYPE11. |
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Slide / Void |
This contact interface can replace interface TYPE3, TYPE5, TYPE7, TYPE11 or TYPE19 |
Single surface, surface to surface with optional Edge to Edge contact. No time step condition with soft penalty. |
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Slide / Void |
For stamping |
Specific interface between a non-deformable master surface and a slave surface designed for stamping. |
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Slide / Void |
For airbag |
Soft penalty contact for airbag. |
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Slide / Void |
This contact interface can replace interface TYPE3, TYPE5, TYPE7, or TYPE20. |
General contact interface |
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Lagrange Multiplier Method |
Tied |
Change of mesh density (solid) |
Tied contact between master and slave nodes. |
|
Slide / Void |
Solid contact impact at all speeds |
Multi-usage impact interface between a master surface and a list of slaves nodes. |
||
Slide / Void |
Meshes with 8-node or 16-node thick-shell or 20 bricks |
Contact of impact between nodes and external surfaces. |
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Slide / Void |
Meshes with 8-node or 16-node thick-shell or 20 bricks |
Contact of impact between external surface of two brick groups. |
||
Automatic Penalty Lagrange |
Slide / Void |
Solid contact impact at all speeds |
Same behavior as TYPE7 with constant minimum time step. |
|
Hertz Formulation |
Slide / Void |
Meshes with 16-node thick-shell or 20 bricks. |
Using Hertz contact theory to describe impact between external surface of two brick groups. |
|
ALE |
Tied |
Fluid-structure interaction |
Boundary between an ALE material and a Lagrangian material. |
|
Slide / Void |
Fluid-structure interaction |
ALE/Lagrange, with void opening and free surface. |
||
FLUID / FLUID |
Fluid to fluid contact |
Connects two fluid meshes with free, tied or periodic options. ALE or EULER or LAG/ALE or EULER or LAG |
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Slide / Void |
Fluid-structure interaction |
Coupling between a Lagrangian material an ALE material. |
See Also: