Connections

You have limited editing capability for imported connection features. These are bulk features with imported data for more than one connection.

Nastran Data Card	Field	Abaqus Keyword	Notes	3DEXPERIENCE Feature
CGAP	—	*ELEMENT, TYPE=CONN3D2	—	Mesh CONN3D2 elements
	EID	Element number
	PID	Section assignment
	GA, GB	Node numbers
	GO/(Xi)/CID	*ORIENTATION
PGAP	PID	Section assignment	If $\left|\frac{KB}{KA}\right|<0.99$ , *CONNECTOR SECTION, AXIAL, *CONNECTOR ELASTICITY (KB), and *CONNECTOR STOP. If $\left|\frac{KB}{KA}\right|\ge 0.99$ , *CONNECTOR SECTION, AXIAL, *CONNECTOR ELASTICITY (KA), and no *CONNECTOR STOP.	Connector
	U0	Lower limit for the connector's relative position at *CONNECTOR STOP
	KA, KB	*CONNECTOR STOP and/or *CONNECTOR SECTION, AXIAL and *CONNECTOR ELASTICITY
CELAS1	—	*ELEMENT, TYPE=SPRING1 or SPRING2	—	Mesh Spring1 or Spring2 Elements and Spring Connection
	EID	Element number
	PID	Section assignment
	G1, G2	Node numbers
	C1, C2	Data lines on *SPRING
PELAS	—	*SPRING, COMPLEX STIFFNESS	—	Spring Connection
	PID	Section assignment
	K, GE	Data lines on *SPRING
CELAS2	—	*ELEMENT, TYPE=SPRING1 or SPRING2	—	Mesh Spring1 or Spring2 Elements
	EID	Element number
	K, C1, C2, GE	Data lines on *SPRING
	G1, G2	Node numbers
CBUSH	—	*ELEMENT, TYPE=CONN3D2	—	Mesh Spring1 or Spring2 Elements
	EID	Element number
	PID	Section assignment
	GA, GB	Node numbers
	CID	*ORIENTATION
PBUSH	—	*CONNECTOR SECTION with CARTESIAN or CARDAN	—	Connector
	PID	Section assignment
	K	*CONNECTOR ELASTICITY
	K1–K6	Data lines on *CONNECTOR ELASTICITY, COMPONENT
	B	*CONNECTOR DAMPING, TYPE=VISCOUS
	B1–B6	Data lines on *CONNECTOR DAMPING, TYPE=VISCOUS, COMPONENT
	GE	*CONNECTOR DAMPING, TYPE=STRUCTURAL
	GE1–GE6	Data lines on *CONNECTOR DAMPING, TYPE=STRUCTURAL, COMPONENT
MPC	—	*EQUATION	Only those MPCs that are referenced in the Case Control section are imported.	Equation
	Gi	Data line of *EQUATION	—
	Ci	Data line of *EQUATION
	Ai	Data line of *EQUATION
MPCADD	—	—	Only MPCADD data cards that are referenced in the Case Control section are imported.	No 3DEXPERIENCE feature.
	Si	—	MPC data cards with SIDs (Si) are mapped to individual *EQUATION options.
RBE2	—	*COUPLING and *KINEMATIC	—	Coupling
	ALPHA	*KINEMATIC, ALPHA
	GN	Node number
	CM	Data line on *KINEMATIC
	GMi	Node number
	Orientation fix	*ORIENTATION reference from *COUPLING	The imported orientation is dependent on the value in the CM field. For more information, see Notes About RBE2.
RBE3	—	*COUPLING and *DISTRIBUTING	RBE3 is handled differently for special cases. For more information, see Notes About RBE3.	Coupling
	REFGRID	*COUPLING, REF NODE	—
	REFC	Data line on *DISTRIBUTING
	WTi, Gi, j	Data lines on *SURFACE, TYPE=NODE
	Orientation fix	*ORIENTATION reference from *COUPLING	If REFGRID has a CD field, there is an orientation associated with the distributed coupling consistent with the referenced coordinate system.
	Ci	*DISTRIBUTING, COUPLING=CONTINUUM, if all Ci fields contain translational degrees of freedom only *DISTRIBUTING, COUPLING=STRUCTURAL, if any Ci field contain rotational degrees of freedom	—

Notes About RBE2

The imported orientation is dependent on the value in the CM field. If the CM field is 123, 456, or 123456, there is no orientation associated with the kinematic coupling. If the CM field is any other value, the imported orientation becomes dependent on which coordinate systems the cloud GRIDs (GMi) reference:

• If all cloud GRIDs reference the same coordinate system at the respective CD field, there is an orientation associated with the kinematic coupling consistent with the referenced coordinate system.
• If all cloud GRIDs do not reference the same coordinate system at the respective CD field, there is no orientation associated with the kinematic coupling.

Notes About RBE3

If two RBE3 data cards (with the DOF combinations matching the example below) have REFGRIDs with the same value and the REFGRIDs are also part of a cloud nodes list, the importer merges the RBE3 data cards and imports only one set of *COUPLING and *DISTRIBUTING keywords.

RBE3, 10006, , 8012, 123, .25, 123, 8006, 8007, 8008, 8009, 1., 456, 8012

RBE3, 10007, , 8012, 456, .25, 456, 8006, 8007, 8008, 8009, 1., 123, 8012

After the import, the *COUPLING and *DISTRIBUTING keywords no longer use REFGRID as part of the cloud nodes, and the COUPLING parameter is set to STRUCTURAL.

If the imported file contains only one RBE3 data card, the *COUPLING and *DISTRIBUTING keywords no longer use REFGRID as part of the cloud nodes, and the COUPLING parameter is set to STRUCTURAL.