StructuralCurveConnection

Supports on 1D members

Object definition for a line support on a 1D member (StructuralCurveMember) or on a rib (StructuralCurveMemberRib). The support can be defined along the entire length of an edge or on its part only. This support is defined by six independent parameters. Each parameter defines the constraint in one direction: translation in X, Y, Z axis and rotation around the same axes. The parameters are the same as for line support on 2D memeber edge support (StructuralEdgeConnection).

Specification in the excel

Column header	Data type	Example / enum definition	Required	Description
Name	String	Sn6	yes	Human readable unique name of the support
Type	Enum	Fixed Hinged Sliding Custom	no	Type of constraint support in general. Has just informative value. Actual boundary conditions are set per transition/rotation per direction.
Member	String	B1	yes, if on Member	The name of the 1D member (StructuralCurveMember) to which is support related
Member Rib	String	R1	yes, if on Rib	The name of the 1D member Rib(StructuralCurveMemberRib) to which is support related
ux	Enum	Free Rigid Flexible Compression only Tension only	yes	Translation in X direction. Free - That is it imposes no constraint in the direction. Rigid - The connection in fully rigid in the specified direction. Flexible - The connection is flexible (elastic) in the specified direction. Parameter Flexible can be linear only, non-linearity is not supported. Compression only acts only under compression. If the support gets under tension it stops acting. Tension only support acts only under tension. See Notes for direction of tension and compression.
uy	Enum	Free Rigid Flexible Compression only Tension only	yes	Translation in Y direction. Free - That is it imposes no constraint in the direction. Rigid - The connection in fully rigid in the specified direction. Flexible - The connection is flexible (elastic) in the specified direction. Parameter Flexible can be linear only, non-linearity is not supported. Compression only acts only under compression. If the support gets under tension it stops acting. Tension only support acts only under tension. See Notes for direction of tension and compression.
uz	Enum	Free Rigid Flexible Compression only Tension only	yes	Translation in Z direction. Free - That is it imposes no constraint in the direction. Rigid - The connection in fully rigid in the specified direction. Flexible - The connection is flexible (elastic) in the specified direction. Parameter Flexible can be linear only, non-linearity is not supported. Compression only acts only under compression. If the support gets under tension it stops acting. Tension only support acts only under tension. See Notes for direction of tension and compression.
fix	Enum	Free Rigid Flexible	yes	Rotational stiffness around X axis. Parameter Flexible can be linear only, non-linearity is not supported.
fiy	Enum	Free Rigid Flexible	yes	Rotational stiffness around Y axis. Parameter Flexible can be linear only, non-linearity is not supported.
fiz	Enum	Free Rigid Flexible	yes	Rotational stiffness around Z axis. Parameter Flexible can be linear only, non-linearity is not supported.
Stiffness X [MN/m2]	Double	100	yes, if Translation X = Flexible	The flexibility of the connection in X direction. Use this property only if the Translation X direction is Flexible.
Stiffness Y [MN/m2]	Double	100	yes, if Translation Y = Flexible	The flexibility of the connection in Y direction. Use this property only if the Translation Y direction is Flexible.
Stiffness Z [MN/m2]	Double	100	yes, if Translation Z = Flexible	The flexibility of the connection in Z direction. Use this property only if the Translation Z direction is Flexible.
Stiffness Fix [MNm/rad/m]	Double	50	yes, if Rx = Flexible	The flexibility in rotation of the connection around local X axis. Use this property only if the Rotational stiffness Rx is Flexible.
Stiffness Fiy [MNm/rad/m]	Double	50	yes, if Ry = Flexible	The flexibility in rotation of the connection around local Y axis. Use this property only if the Rotational stiffness Ry is Flexible.
Stiffness Fiz [MNm/rad/m]	Double	50	yes, if Rz = Flexible	The flexibility in rotation of the connection around local Z axis. Use this property only if the Rotational stiffness Rz is Flexible.
Coordinate system	Enum	Global Local	yes	Defines the co-ordinate system of the member in which the support is applied. Go to Notes to see an example.
Coordinate definition	Enum	Absolute Relative	yes	Selects the coordinate system that is used to define the length of the support. Relative means without units. For define length of the hinges in meters input absolute
Origin	Enum	From start From end	yes	Specifies the origin of the coordinate system used for the definition of the length of the hinge
Start point [m]	Double	value in meters for Coordinate definition = Absolute 0.0 value in percentage for Coordinate definition = Relative 0.0	yes	Defines the position of the start point of the support in relative or absolute coordinates [m]
End point [m]	Double	value in meters for Coordinate definition = Absolute 5.25 value in percentage for Coordinate definition = Relative 1.0	yes	Defines the position of the end point of the support in relative or absolute coordinates [m]
Parent ID	String	67b35d84-3d04-47aa-aa4a-dc1263982320	no	Is filled for objects created be dividing curved geometry to series of straight line objects. Parent ID will ensure that curved edge is imported as straight parts to nonsupporting application, and back to original supporting application as curved geometry. To ensure successful round trip of segmented objects and their related objects, Parent ID needs to be present in both directions.
Id	String	39f238a5-01d0-45cf-a2eb-958170fd4f39	no	Unique attribute designation

Notes

Tension and compression supports act only in a specific direction. Tension supports prevent the movement in the positive direction of an axis. Compression supports prevent the movement in the opposite direction. Those supports are compression only and tension only.

Support on a 1D member can be defined by local or global coordinate systems. Local coordinate system is the coordinate system of the 1D member (StructuralCurveMember or StructuralCurveMemberRib). See the image below for an example of tension only support defined by local coordinate system, it prevents the movement in the positive direction of the member’s local axes.