Groups
Group entities define and store interfaces and rigid walls typically used in contact analysis.
- Interfaces
- Configurations 1 - 4: Define contact interactions between various parts of the model.
- Rigid Walls
- Configuration 5: Define a contact or sliding rigid wall in an analysis code.
- ALE Setup
- Configuration 6: Define input data pertaining to the Arbitrary-Lagrangian-Eulerian LS-DYNA capability.
Abaqus Cards
| Card | Description |
|---|---|
| *BLOCKAGE | Control contacting surfaces for blockage. Note: Must be used in conjunction
with the *SURFACE INTERACTION card.
|
| *CHANGE FRICTION | Change friction properties. Note: The Standard template only.
It must be added to a load step (*STEP). |
| *CLEARANCE | Specify a particular initial clearance value and a contact direction for the
secondary nodes on a surface. Note: Must be added to a load step (*STEP) in explicit
template.
|
| *COHESIVE BEHAVIOR | Used to define surface-based cohesive behavior in a mechanical contact
analysis. Note: It must be used in conjunction with the *SURFACE
INTERACTION option.
|
| *CONTACT(General Contact) | Begin the definition of general contact. |
| *CONTACT CLEARANCE | Define contact clearance properties. |
| *CONTACT CLEARANCE ASSIGNMENT | Assign contact clearances between surfaces in the general contact domain. |
| *CONTACT CONTROLS | Specify additional controls for contact. Note: Must be added to a load step
(*STEP).
|
| *CONTACT CONTROLS ASSIGNMENT | Assign contact controls for the general contact algorithm. Note: This card is
a sub-option in the *CONTACT card image.
|
| *CONTACT DAMPING | Define viscous damping between contacting surfaces. Note: This card is a
sub-option in the *SURFACE INTERACTION card image.
|
| *CONTACT EXCLUSIONS | Specify self-contact surfaces or surface pairings to exclude from the general
contact domain. Note: This card is a sub-option in the *CONTACT card
image.
|
| *CONTACT FORMULATION | Specify a nondefault contact formulation for the general contact
algorithm. Note: This card is a sub-option in the * CONTACT card
image.
|
| *CONTACT INCLUSIONS | Specify self-contact surfaces or surface pairings to include in the general
contact domain. Note: This card is a sub-option in the *CONTACT card
image.
|
| *CONTACT INTERFERENCE | Prescribe time-dependent allowable interferences of contact pairs and contact
elements. Note: The Standard template only.
Must be added to a load step (*STEP). |
| *CONTACT PAIR | Define surfaces that contact each other. |
| *CONTACT PROPERTY ASSIGNMENT | Assign contact properties for the general contact algorithm. Note: This card
is a sub-option in the *CONTACT card image.
|
| *CONTROLS | Reset solution controls. Note: The Standard template only.
|
| *CONTROLS | Reset solution controls. Note: The Standard template only.
|
| *COUPLING | Define a surface-based coupling constraint where the *SURFACE card points to
elements. Note: The *COUPLING is also supported as rigid elements (COUP_KIN) and
RBE3 (COUP_DIS) when *SURFACE points to nodes.
|
| *DEBOND | Used to specify that crack propagation may occur between two surfaces that
are initially partially bonded. Note: The Standard template only.
The *FRACTURE CRITERION option must appear immediately following this option. |
| *DIAGNOSTICS | Control diagnostic messages. Note:
Explicit template only. Must be added to a load step (*STEP). |
| *DISTRIBUTING | Define a distributing coupling constraint. Note: This card is a sub-option in
the *COUPLING card image.
It is also supported as COUP_DIS type rbe3 elements. |
| *FASTENER (SPOT WELD) | Define mesh-independent fasteners. Note:
|
| *FILTER | Define a filter for output filtering. Note: Explicit template
only
|
| *FIXED MASS SCALING | Specify mass scaling at the beginning of the step. Note: Explicit template
only.
Must be added to a load step (*STEP). |
| *FRACTURE CRITERION | Used to specify the criterion for crack propagation along initially partially
bonded surfaces. Note: It must appear immediately following the
*DEBOND option in Abaqus/Standard
and after the *COHESIVE BEHAVIOR option in Abaqus/Explicit.
|
| *FRICTION | Specify a friction model. Note: This card is a sub-option in the *SURFACE
INTERACTION card image.
|
| *FRICTION | Specify a friction model. Note:
This card is a sub-option in the *CHANGE
FRICTION card image. |
| *INITIAL CONDITIONS | Prescribe initial conditions for an analysis. |
| *INTEGRATED OUTPUT SECTION | Define an integrated output section over a surface with a local coordinate system and a reference point. |
| *KINEMATIC | Define a kinematic coupling constraint. Note: This card is a sub-option in the
*COUPLING card image.
It is also supported as COUP_KIN type rigid elements. |
| *MODEL CHANGE | Remove or reactivate elements and contact pairs. Note: The Standard template
only.
Must be added to a load step (*STEP). |
| *PRE-TENSION SECTION | Associate a pre-tension node with a pre-tension section. |
| *SHELL TO SOLID COUPLING | Define a surface-based coupling between a shell edge and a solid face. Note:
|
| *SURFACE BEHAVIOR | Define alternative pressure-overclosure relationships for contact. Note: This
card is a sub-option in the *SURFACE INTERACTION card image.
|
| *SURFACE INTERACTION | Define surface interaction properties. Note: Explicit template only.
This card is defined from the Property panel in case of Standard 3D and Standard 2D templates. |
| *SURFACE PROPERTY ASSIGNMENT | Assign surface properties to a surface for the general contact
algorithm. Note: This card is a sub-option in the *CONTACT card
image.
|
| *TIE | Define surface-based tie and cyclic symmetry constraints or coupled acoustic-structural interactions. |
| *VARIABLE MASS SCALING | Specify mass scaling during the step. Note: Explicit template only.
Must be added to a load step (*STEP). |
EXODUS Cards
| Card | Description |
|---|---|
| TiedJoint |
LS-DYNA Cards
AnLS-DYNA entity that utilizes a *SET_ [NODE, SHELL, PART, and so on] keyword card belongs to a group, with the exception of Rigid Bodies/RBE2’s.
The difference among configurations is the type of entities contained within a group.
- Config 1
- Contains main and secondary elements.
- Config 2
- Contains main elements and secondary nodes.
- Config 3
- Contains secondary elements.
- Config 4
- Contains secondary nodes.
Sliding interfaces specifications.
- The Keyword _TITLE option is supported. The _THERMAL(IREAD==3) option is not supported.
- Use the additional cards option in Keyword decks to select number of lines of data. If this is on, two additional cards are available.
- In Structured, additional cards are controlled by using the IREAD variable. Valid values are 0, 1, and 2.
- Boxes, part sets, and sets are supported.
- The $HMNAME fields are used for names. When using the _TITLE option, the 70-character field is considered a comment.
- If the line following the keyword (No TITLE option), or the first line of the Structured card contains $HM_NAME, the name supplied is read and used as the group's name. If the string $HM_ID also exists, this is used as the group’s ID. NAME is 16 characters, starting in Column 9. ID field is 8 characters, starting in Column 35.
- The solver interface type defines the general type of the LS-DYNA Sliding Interface. Use the to make changes to the LS-DYNA type.
| Card | Description |
|---|---|
| *BOUNDARY_AMBIENT_EOS | Defines the IDs of 2 load curves: 1) internal energy per unit reference specific volume and 2) relative volume. |
| *BOUNDARY_FLUX_SET | Define flux boundary conditions for a thermal or coupled thermal/structural analysis. |
| *BOUNDARY_SPH_FLOW | Define a flow of particle |
| *CONSTRAINED_BUTT_WELD | Define a line of coincident nodes that represent a structural butt weld between two parts defined by shell elements. |
| *CONSTRAINED_LAGRANGE_IN_SOLID | Provides the coupling mechanism for modeling Fluid-Structure Interaction. |
| *CONSTRAINED_SPOTWELD | Defines massless spot welds between non-contiguous nodal pairs. |
| *CONSTRAINED_TIE-BREAK | Define a tied shell edge to shell edge interface that can release locally as a function of plastic strain of the shells surrounding the interface nodes. |
| *CONSTRAINED_TIED_NODES_FAILURE | Define a tied node set with failure based on plastic strain. |
| *CONTACT_AIRBAG_SINGLE_SURFACE(ID) | Define a contact interface. |
| *CONTACT_AIRBAG_SINGLE_SURFACE_MPP(ID) | |
| *CONTACT_AUTO_MOVE | Move the main surface in a contact definition to close an initial gap between the secondary and main surfaces. |
| *CONTACT_AUTOMATIC_GENERAL(ID) | Define a contact interface. |
| *CONTACT_AUTOMATIC_GENERAL_INTERIOR(ID) | Define a contact interface. |
| *CONTACT_AUTOMATIC_GENERAL_INTERIOR_MPP(ID) | |
| *CONTACT_AUTOMATIC_GENERAL_MPP(ID) | |
| *CONTACT_AUTOMATIC_NODES_TO_SURFACE(ID) | Define a contact interface. |
| *CONTACT_AUTOMATIC_NODES_TO_SURFACE_MPP(ID) | |
| *CONTACT_AUTOMATIC_NODES_TO_SURFACE_SMOOTH(ID) | Define a contact interface. |
| *CONTACT_AUTOMATIC_NODES_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE_ORTHO_FRICTION(ID) | |
| *CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_AUTOMATIC_ONE_WAY_SURFACE_TO_SURFACE_TIEBREAK(ID) | |
| *CONTACT_AUTOMATIC_SINGLE_SURFACE(ID) | |
| *CONTACT_AUTOMATIC_SINGLE_SURFACE_MORTAR(ID) | Define a contact interface. |
| *CONTACT_AUTOMATIC_SINGLE_SURFACE_MPP(ID) | |
| *CONTACT_AUTOMATIC_SINGLE_SURFACE_SMOOTH(ID) | |
| *CONTACT_AUTOMATIC_SINGLE_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_MORTAR(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_MORTAR_TIED(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_ORTHO_FRICTION(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_THERMAL_FRICTION(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_TIEBREAK(ID) | |
| *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE_TIEBREAK_MPP(ID) | |
| *CONTACT_CONSTRAINT_NODES_TO_SURFACE(ID) | |
| *CONTACT_CONSTRAINT_NODES_TO_SURFACE_MPP(ID) | |
| *CONTACT_CONSTRAINT_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_CONSTRAINT_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_DRAWBEAD(ID) | |
| *CONTACT_DRAWBEAD_MPP(ID) | |
| *CONTACT_ENTITY(ID) | Define a contact entity |
| *CONTACT_ENTITY_MPP(ID) | |
| *CONTACT_ERODING_NODES_TO_SURFACE(ID) | |
| *CONTACT_ERODING_NODES_TO_SURFACE_MPP(ID) | |
| *CONTACT_ERODING_SINGLE_SURFACE(ID) | |
| *CONTACT_ERODING_SINGLE_SURFACE_MPP(ID) | |
| *CONTACT_ERODING_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_ERODING_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_FORCE_TRANSDUCER_CONSTRAINT(ID) | |
| *CONTACT_FORCE_TRANSDUCER_CONSTRAINT_MPP(ID) | |
| *CONTACT_FORCE_TRANSDUCER_PENALTY(ID) | |
| *CONTACT_FORCE_TRANSDUCER_PENALTY_MPP(ID) | |
| *CONTACT_FORMING_NODES_TO_SURFACE(ID) | |
| *CONTACT_FORMING_NODES_TO_SURFACE_MPP(ID) | |
| *CONTACT_FORMING_NODES_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_FORMING_NODES_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET_MPP(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET_SMOOTH(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET_SMOOTH_MPP(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_FORMING_ONEWAY_SURFACE_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET_MPP(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET_SMOOTH(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET_SMOOTH_mpp(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_MORTAR(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_FORMING_SURFACE_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_INTERIOR(ID) | Define interior contact for foam hexahedral and tetrahedral elements. |
| *CONTACT_INTERIOR_MPP(ID) | |
| *CONTACT_NODES_TO_SURFACE(ID) | |
| *CONTACT_NODES_TO_SURFACE_INTERFERENCE(ID) | |
| *CONTACT_NODES_TO_SURFACE_INTERFERENCE_MPP(ID) | |
| *CONTACT_NODES_TO_SURFACE_MPP(ID) | |
| *CONTACT_NODES_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_NODES_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE_INTERFERENCE(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE_INTERFERENCE_CONSTRAINED_OFFSET(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE_INTERFERENCE_CONSTRAINED_OFFSET_MPP(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE_INTERFERENCE_MPP(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_ONE_WAY_SURFACE_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_RIGID_BODY_ONE_WAY_TO_RIGID_BODY(ID) | Define rigid surface contact. |
| *CONTACT_RIGID_BODY_ONE_WAY_TO_RIGID_BODY_MPP(ID) | |
| *CONTACT_RIGID_BODY_TWO_WAY_TO_RIGID_BODY(ID) | |
| *CONTACT_RIGID_BODY_TWO_WAY_TO_RIGID_BODY_MPP(ID) | |
| *CONTACT_RIGID_NODES_TO_RIGID_BODY(ID) | |
| *CONTACT_RIGID_NODES_TO_RIGID_BODY_MPP(ID) | |
| *CONTACT_RIGID_SURFACE(ID) | |
| *CONTACT_RIGID_SURFACE_MPP(ID) | |
| *CONTACT_SINGLE_EDGE(ID) | |
| *CONTACT_SINGLE_EDGE_MPP(ID) | |
| *CONTACT_SINGLE_SURFACE(ID) | |
| *CONTACT_SINGLE_SURFACE_MPP(ID) | |
| *CONTACT_SLIDING_ONLY(ID) | |
| *CONTACT_SLIDING_ONLY_MPP(ID) | |
| *CONTACT_SLIDING_ONLY_PENALTY(ID) | |
| *CONTACT_SLIDING_ONLY_PENALTY_MPP(ID) | |
| *CONTACT_SPOTWELD(ID) | |
| *CONTACT_SPOTWELD_MPP(ID) | |
| *CONTACT_SPOTWELD_WITH_TORSION(ID) | |
| *CONTACT_SPOTWELD_WITH_TORSION_MPP(ID) | |
| *CONTACT_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_CONTRACTION_JOINT(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_INTERFERENCE(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_INTERFERENCE_CONSTRAINED_OFFSET | |
| *CONTACT_SURFACE_TO_SURFACE_INTERFERENCE_CONSTRAINED_OFFSET_MPP(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_INTERFERENCE_MPP(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_SMOOTH(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_SMOOTH_MPP(ID) | |
| *CONTACT_SURFACE_TO_SURFACE_THERMAL_FRICTION(ID) | |
| *CONTACT_THERMAL_SURFACE_TO_SURFACE_(ID) | |
| *CONTACT_THERMAL_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_TIEBREAK_NODES_TO_SURFACE(ID) | |
| *CONTACT_TIEBREAK_NODES_TO_SURFACE_MPP(ID) | |
| *CONTACT_TIEBREAK_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_TIEBREAK_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_TIED_NODES_TO_SURFACE(ID) | |
| *CONTACT_TIED_NODES_TO_SURFACE_CONSTRAINED_OFFSET(ID) | |
| *CONTACT_TIED_NODES_TO_SURFACE_CONSTRAINED_OFFSET_MPP(ID) | |
| *CONTACT_TIED_NODES_TO_SURFACE_MPP(ID) | |
| *CONTACT_TIED_NODES_TO_SURFACE_OFFSET(ID) | |
| *CONTACT_TIED_NODES_TO_SURFACE_OFFSET_MPP(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_BEAM_OFFSET(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_BEAM_OFFSET_MPP(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_CONSTRAINED_OFFSET(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_CONSTRAINED_OFFSET_MPP(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_MPP(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_OFFSET(ID) | |
| *CONTACT_TIED_SHELL_EDGE_TO_SURFACE_OFFSET_MPP(ID) | |
| *CONTACT_TIED_SURFACE_TO_SURFACE(ID) | |
| *CONTACT_TIED_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET(ID) | |
| *CONTACT_TIED_SURFACE_TO_SURFACE_CONSTRAINED_OFFSET_MPP(ID) | |
| *CONTACT_TIED_SURFACE_TO_SURFACE_MPP(ID) | |
| *CONTACT_TIED_SURFACE_TO_SURFACE_OFFSET(ID) | |
| *CONTACT_TIED_SURFACE_TO_SURFACE_OFFSET_MPP(ID) | |
| *CONTACT_TIED_SURFACE_TO_SURFACE_TITLE(ID) | |
| *CONTACT_2D_AUTOMATIC_SURFACE_TO_SURFACE(ID) | Define a two-dimensional contact or slide line. |
| *CONTACT_2D_AUTOMATIC_SURFACE_TO_SURFACE_THERMAL_TITLE(ID) | |
| *CONTACT_2D_AUTOMATIC_SURFACE_TO_SURFACE_THERMAL_TITLE_MPP(ID) | |
| *CONTACT_2D_AUTOMATIC_SURFACE_TO_SURFACE_TITLE(ID) | |
| *CONTACT_2D_AUTOMATIC_SURFACE_TO_SURFACE_TITLE_MPP(ID) | |
| *CONTACT_2D_AUTOMATIC_TIED_TITLE | Defines a two-dimensional contact or slide line. May be used with rigid body material. |
| *DATABASE_FSI | Used to output information about certain coupled Lagrangian surfaces. |
| *DATABASE_NODAL_FORCE_GROUP | Define a nodal force group for output into ASCII file NODFOR and the binary file XTFILE. |
| *ELEMENT_TRIM | Define a part subset to be trimmed by *DEFINE_CURVE_TRIM |
| *INITIAL_GAS_MIXTURE | Used to specify a) which ALE multi-material groups may be present inside an ALE mesh set at time zero and b) the corresponding reference gas temperature and density which define the initial thermodynamic state of the gases. |
| *INITIAL_VOID (PART and SET) | Define initial voided part set IDs or part numbers. |
| *INITIAL_VOLUME_FRACTION | Define initial volume fractions of different materials in multi-material ALE elements. |
| *INITIAL_VOLUME_FRACTION_GEOMETRY | Volume filling command for defining the volume fractions of various ALE multi-material group that can occupy certain regions in some specified ALE mesh set. |
| *SET_MULTI-MATERIAL_GROUP_LIST(TITLE) | Defines an ALE multi-material set ID which contains a collection of one or more ALE multi-material group IDs. |
Nastran Cards
Contact, thermal analysis definitions and non-structural mass are represented using group
entities.
| Card | Description |
|---|---|
| AESURF | Specifies an aerodynamic control surface as a member of the set of aerodynamic extra points. |
| BCBODY | Defines a flexible or rigid contact body in 2D or 3D. Note: Defined through
surface properties in BSURF. On export, turn on solver option "Export as old
contact."
|
| BCBODY1 | Defines a flexible or rigid contact body in 2D and 3D. Note: Use Contact
Browser.
|
| BCONECT | Defines the touching and touched contact bodies. Note: Use Contact
Browser.
|
| BCTABL1 | Defines a contact table. Note: Use Contact Browser.
|
| BCTABLE | Defines a contact table. Note: Defined through BCONECT/BTABL1. On export, turn
on solver option "Export as old contact."
|
| BCTSET |
Note: Defined using the Interfaces panel
|
| BSURF | Defines a contact body or surface defined by Element IDs. Note: Defined using
the Interfaces panel
|
| BSURFS | 3D Contact Region Definition by Solid Elements. Note: NX Nastran only. Defined using the Interfaces
panel
|
| CONDUCTION | Defines CHBDYE secondary elements used for thermal conduction
analysis. Note: Defined using the Interfaces panel
|
| CONVECTION | Defines CHBDYE secondary elements used for thermal convection analysis, and also
allows for CONV continuation cards to be defined. Note: Has PCONV card image.
Defined using the Interfaces panel.
|
| NSM1 | Defines non-structural mass per unit length/area on properties or
elements. Note: Defined using the NSM panel.
|
| NSML1 | Defines lumped non-structural mass on properties or elements. Note: Defined
using the NSM panel.
|
| PCONV | Specifies the free convection boundary condition properties of a boundary
condition surface element used for heat transfer analysis. Note: Defined using the
Interfaces panel, using CONVECTION group type.
|
| RADIATION | Defines CHBDYE secondary elements used for thermal radiation analysis. Note: Has
RADM card image. Defined using the Interfaces panel.
|
| RADM | Defines the radiation properties of a boundary element for heat transfer
analysis. Note: Defined using the Interfaces panel, using RADIATION group
type.
|
| SPBLND1 | Defines a strip based blending of two splines. |
| SPBLND2 | Defines a curve based blending of two splines. |
| SPRELAX | Defines relaxation of a spline based on an adjacent spline. |
| SPLINE1 | Defines a surface spline for interpolating motion and/or forces for aeroelastic problems on aerodynamic geometries defined by regular arrays of aerodynamic points. |
| SPLINE2 | Defines a beam spline for interpolating motion and/or forces for aeroelastic problems on aerodynamic geometries defined by regular arrays of aerodynamic points. |
| SPLINE4 | Defines a curved surface spline for interpolating motion or forces for aeroelastic problems on general aerodynamic geometries. |
| SPLINE5 | Defines a 1D beam spline for interpolating motion and/or forces for aeroelastic problems on aerodynamic geometries. |
| SPLINE6 | Defines a 6DOF or 3DOF finite surface spline for interpolating motion and/or forces between two meshes. |
| SPLINE7 | Defines a 6DOF finite beam spline for interpolating motion and/or forces between two meshes. |
| SPLINRB | Defines a rigid body spline for interpolating motion or forces for aeroelastic problems on general aerodynamic geometries. |
OptiStruct Cards
Contact, thermal analysis definitions, multi-body dynamics bodies, non-structural mass,
rigid walls and section outputs are represented using group entities.
| Card | Description |
|---|---|
| CLRNC | Defines parameters for clearance and threaded bolts geometry. The CLRNC Bulk
Data Entry is selected on the CLEARANCE field in the CONTACT Bulk Data Entry. Note: Bulk Data Entry
|
| CONTACT | Defines a contact interface for Small Displacement
Nonlinear Analysis (NLSTAT), Nonlinear Transient Dynamics (NLGEOM), and
Contact-based Thermal Analysis (HEAT). Note: Bulk Data Entry
|
| CONDUCTION | Defines CHBDYE secondary elements used for thermal
conduction analysis. Note: Bulk Data Entry
|
| CONVECTION | Defines CHBDYE secondary elements used for thermal
conduction analysis, and also allows for CONV continuation cards to be
defined. Note: Bulk Data Entry
|
| GROUND | Defines a ground body out of a list of finite element
properties, elements, and grid points. Note: Bulk Data Entry
|
| MBCNTDS | Defines a Multibody Contact between a set of nodes and a
deformable surface. Note: Bulk Data Entry
|
| MBCNTR | Defines a Multibody contact between rigid
bodies. Note: Bulk Data Entry
|
| NSGE1 | Defines non-structural material damping for a list of
elements or properties (Alternate format). Note: Bulk Data Entry
|
| NSGE | Defines non-structural material damping for a list of
elements or properties. Note: Bulk Data Entry
|
| NSM1 | Defines non-structural mass per unit area or per unit length
for a list of elements or properties. Note: Bulk Data Entry
|
| NSML1 | Defines lumped non-structural mass for a list of elements
or properties. Note: Bulk Data Entry
|
| PCONV | Defines a free convection boundary condition
properties. Note: Bulk Data Entry
|
| PFBODY | Defines a flexible body out of a list of finite element
properties, elements, and grid points. Note: Bulk Data Entry
|
| PRBODY | Defines a rigid body out of a list of finite element
properties, elements and grid points. Note: Bulk Data Entry
|
| SECT | Defines a section for force output in geometric nonlinear
analysis. Note: Bulk Data Entry
|
| TIE | Defines a tied contact in Linear Static Analysis (STATICS)
and Small Displacement Nonlinear Analysis (NLSTAT). Penalty-based and MPC-based TIE
contacts are available and can be selected using CONTPRM,
TIE. Note: Bulk Data Entry
|
| XDAMP | Defines the values for Raleigh damping for geometric
nonlinear dynamic analysis. Note: Bulk Data Entry
|
PAM-CRASH 2G Cards
| Card | Description |
|---|---|
| CNTAC / NTYPE = 1 | Special sliding without separation |
| CNTAC / NTYPE = 10 | Internal solid anti-collapse contact |
| CNTAC / NTYPE = 21 | Body-to-multiplane contact |
| CNTAC / NTYPE = 33 | Symmetric node-to-segment contact with edge treatment |
| CNTAC / NTYPE = 34 | Non-symmetric node-to-segment contact with edge treatment |
| CNTAC / NTYPE = 36 | Self-impacting node-to-segment contact with edge treatment |
| CNTAC / NTYPE = 37 | Enhanced self-impacting contact for airbags |
| CNTAC / NTYPE = 43 | Edge-to-edge main-secondary contact |
| CNTAC / NTYPE = 44 | Node-to-segment-oriented contact with smooth contact surface |
| CNTAC / NTYPE = 46 | Edge-to-edge self-impacting contact |
| CNTAC / NTYPE = 54 | Non-symmetric-oriented contact |
| CNTAC / NTYPE = 61 | Node-to-analytical surface contact |
| CNTAC / NTYPE = 154 | Implicit small sliding contact |
| MASS_GES / | Added mass definition (only when IDNOD = 0) |
| NSMAS / | Non-structural mass definition |
| NSMAS2/ | Alternate mass distribution method |
| TIED / | Node-surface tied interface |
Permas Cards
| Card | Description |
|---|---|
| $CONTACT | Contact definitions |
| $MPC ISURFACE | Coupling of two surfaces |
| $MPC WLSSURFACE/ WLDSURFACE | Weld connection between nodes and surfaces |
| $PRETENSION PLANE | Pretension definition without detailing the threaded connection. |
| $PRETENSION THREAD | Modeling a threaded pretension section |
Radioss Cards
| Card | Description |
|---|---|
| /INICONT | Container definition for ALE material. Note: Block Format Keyword
|
| /INIVOL | Defines material in the ALE containers. Note: Block Format Keyword
|
| /INTER | Describes the interfaces. Note: Block Format Keyword
|
| /INTER/LAGMUL/TYPE7 | Describes the Lagrange Multiplier interface
TYPE7. Multi usage impact interface between a main surface and a list of secondary
nodes. Note: Block Format Keyword
|
| /INTER/TYPE1 | Defines a fluid-structure interaction. Lagrangian
elements (structure) can interact with ALE elements, which model a viscous
fluid. Note: Block Format Keyword
|
| /INTER/TYPE2 | Defines a TYPE2 tied interface that connects a set
of secondary nodes to a main surface. It can be used to connect coarse and fine
meshes, model spotwelds, rivets, and so on. Note: Block Format Keyword
|
| /INTER/TYPE3 | Simulates impacts between two surfaces (with
oriented segments). This interface works properly if the two surfaces are simply
convex. Note: Block Format Keyword
|
| /INTER/TYPE5 | Simulates impacts between a main surface and a
list of secondary nodes. Note: Block Format Keyword
|
| /INTER/TYPE6 | Simulates contact between two rigid bodies with
tabulated input of the contact force. It works similar to interface TYPE3. Contact
force between the bodies can be input as a function of maximal penetration. The
interface also allows you to input a force function for unloading. Note: Block Format Keyword
|
| /INTER/TYPE7 | Multi-usage impact interface, modeling contact
between a main surface and a group of secondary nodes. It is also possible to
consider heat transfer and heat friction. Note: Block Format Keyword
|
| /INTER/TYPE8 | Simulates drawbeads. It is mainly used in the
process industry to model metal forming. Drawbeads are used to prevent the metal
strip from sliding during the stamping process. Normals of the main segments must be
oriented toward the secondary nodes (unsorted group). Note: Block Format Keyword
|
| /INTER/TYPE9 | Defines the ALE Lagrange with void opening and
free space. Non-impacted ALE nodes are on a free surface. The grid velocity is equal
to the material velocity in normal direction. The normal of the main surface
elements must be oriented toward the secondary nodes. Note: Block Format Keyword
|
| /INTER/TYPE10 | Tied contact with void. Note: Block Format Keyword
|
| /INTER/TYPE11 | Simulates impact between edge to Edge or lines. A
line can be a beam or truss element or a shell edge or spring elements. Note: Block Format Keyword
|
| /INTER/TYPE12 | Defines fluid to fluid contact and enables the
transmission of flow between two ALE surfaces (main and secondary side). The
secondary node velocities are interpolated from main surface values. Then convective
fluxes are calculated between the two surfaces. Note: Block Format Keyword
|
| /INTER/TYPE14 | Simulates impacts between a hyper-ellipsoidal
rigid main surface and a list of secondary nodes. The hyper-ellipsoidal surface is
treated as an analytical surface (hyper-ellipsoidal surfaces are only discretized
for post-processing). For this interface, generally, use a mesh whose size is finer
than the lowest semi- axis of main surface. The main surface must be a MADYMO hyper-ellipsoidal surface or a Radioss hyper-ellipsoidal surface. Note: Block Format Keyword
|
| /INTER/TYPE15 | Ellipsoidal Surfaces to Elements Contact. It is a
penalty contact interface without damping. This interface replaces interface TYPE14,
especially if the mesh is coarser than the ellipsoid size. The secondary surface
must be a set of 3-node or 4-node segments (i.e. any kind of surface; except ELLIPS
and MDELLIPS surfaces). The main surface must be a MADYMO hyper-ellipsoidal surface or a Radioss
hyper-ellipsoidal surface, and Interface does not allow penetrations up to half the
ellipsoid. Note: Block Format Keyword
|
| /INTER/TYPE18 | Defines the Euler/Lagrange or ALE/Lagrange
contact. Euler-Lagrange or ALE-Lagrange contact is the contact between a Lagrangian
main surface and a list of Eulerian or ALE secondary nodes. Material velocity for
all secondary nodes is imposed by main surface with a penalty formulation. ALE
secondary node grid velocity is not modified by this interface. Note: Block Format Keyword
|
| /INTER/TYPE19 | Combination of interface TYPE7 and TYPE11, with
common input based on the same secondary/main surfaces. Secondary node group for
interface TYPE7, as well as secondary and main line segments used by equivalent
TYPE11 interface are virtually generated from these input surfaces. Note: Block Format Keyword
|
| /INTER/TYPE20 | A general single surface or surface to surface
contact interface. Edge to edge contact is also possible. Penalty stiffness is
constant and therefore the time step is not affected (for standard penalty
stiffness). This contact interface can replace interface TYPE3, TYPE5, TYPE7, TYPE11
or TYPE19. The interface is basically defined in terms of one or two surfaces. If
only one surface is used, this surface is self-impacting. If two surfaces are
defined, nodes of surface two impact surface one. A symmetric treatment can be
activated. Edges of surface one and two can be taken into account for the contact.
Nodes can be added to surface. Note: Block Format Keyword
|
| /INTER/TYPE21 | Specific interface between a non-deformable main
surface and a secondary surface designed for stamping. All nodes of the main surface
must belong to the rigid body. Note: Block Format Keyword
|
| /INTER/TYPE22 | Defines Cartesian Cut Cell Method for FSI between
a lagrangian surface and a fluid domain. Coupling Interface Type 22 was designed for
ditching application and currently requires a smooth lagrangian surface. User
surface is used to cut the fluid mesh, this way and contrary to Interface Type 18
based on a penalty method, there is no numerical parameter to define. Note: Block Format Keyword
|
| /INTER/TYPE23 | Defines a contact interface for airbag fabrics,
modeling contact between a main surface and a secondary surface which are supposed
to belong to an airbag. This is a soft penalty contact which can deal with
penetrations and intersections often coming in the folded airbag mesh. This
interface can be used for self-impacting. Note: Block Format Keyword
|
| /INTER/TYPE24 | Defines a general contact interface, optional
single surface or surface to surface or nodes to surface contacts could be defined.
Penalty stiffness is constant and therefore the time step is not affected (for
standard penalty stiffness). This contact interface can replace interface type 3, 5,
7, or 20. Note: Block Format Keyword
|
| /INTER/TYPE25 | TYPE25 is a general nodes to surface contact
interface using the penalty method. The penalty stiffness is constant and therefore
the time step is not affected for standard penalty stiffness. Unlike TYPE7 contact,
solid elements have zero contact gap thickness. Three types of contact inputs can be
defined: single surface, surface to surface, or nodes to surface. This contact
interface can replace interface TYPE3, TYPE5, TYPE7, TYPE20 (obsolete) or TYPE24.
Note: Block Format Keyword
|
Samcef Cards
| Card | Description | Examples |
|---|---|---|
| .BOLT | Defines a bolt contact. |
.BOLT I 1 NDIST 1155 MACRO 2090 $ .CLM NOEUD I 1155 CHA COMP 1 VAL 150000.0 .BOLT I 2 NDIST 1156 MACRO 3090 FIX 2 $ .CLM NOEUD I 1156 DEP VAL 10.5 COMP 1 |
| .MCT | Defines a flexible contact. |
.MCT I 10 GROUP 17 GTAR 23 OPT 3 ! Contact default
|
| .STI | Defines a glue contact. |
.STI I 1 GROUP 17 23 PROJ 0! Glue default .STI I 2 GROUP 35 64 ! Advanced glue |
| .ZYG | Defines a periodic condition or cyclic condition - explicit mode contact. |
.ZYG GROUP "secondary_nodes" "main" $ .ZYG GROUP "secondary_nodes" "main" $ |
| .ZYG_AUTO | Defines a cyclic condition - automatic mode contact. |
.ZYG AUTO GROUP "auto_elements" $ |