RelConnectsStructuralMember

Hinges on 1D member

The entity RelConnectsStructuralMember allows users to release degrees of freedom between structural members (beams, columns) and structural connection objects (nodes or supports). When no RelConnectsStrucutralMember is defined, connections are taken into account as fully rigid. The defined connections may be rigid or free or anything in between. In each direction (translations along X, Y, and Z local 1D member axes, rotation around X, Y, and Z local 1D member axes) the condition may be: Free, Rigid, Flexible.

Specification in the excel:

Name of the column header	Type of data	Value example or enum definition	Required value	Description
Name	String	H1	yes	Human readable unique name of the RelConnectsStrucutralMember
Member	String	Beam B54	yes	The name of the curve member to which is hinge related
Position	Enum	Begin End Both	yes	The position of the hinge on the curve member. *see notes
ux	Enum	Free Rigid Flexible	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.
uy	Enum	Free Rigid Flexible	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.
uz	Enum	Free Rigid Flexible	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.
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/m]	Double	100	yes, if ux = Flexible	The flexibility of the connection in X direction
Stiffness Y [MN/m]	Double	100	yes, if uy = Flexible	The flexibility of the connection in Y direction
Stiffness Z [MN/m]	Double	100	yes, if uz = Flexible	The flexibility of the connection in Z direction
Stiffness Fix [MNm/rad]	Double	50	yes, if fix = Flexible	The flexibility in rotation of the connection around local X axis
Stiffness Fiy [MNm/rad]	Double	50	yes, if fiy = Flexible	The flexibility in rotation of the connection around local Y axis
Stiffness Fiz [MNm/rad]	Double	50	yes, if fiz = Flexible	The flexibility in rotation of the connection around local Z axis
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

Hinge position is used for allowing users to define where degrees of freedom are released (user defined constrains).

When the fully rigid connection is desired - no RelConnectsStructuralMember is defined!