1D Connection dialog box

Type
Type	Specifies the type of 1D connection:Node to Node connects selected pairs of nodes with the specified 1D element type.(Nastran only) Element Edge to Element Face creates an FE-based glue connection between selected element edges and faces.Point to Point connects selected pairs of points or mesh points with the specified 1D element type.Point to Edge creates a geometry-based 1D mesh connecting a selected point or mesh point with one or more edges.Point to Face creates a geometry-based 1D mesh connecting a selected point or mesh point with one or more faces.Edge to Edge creates a geometry-based 1D mesh connecting selected curves or polygon edges.Edge to Face creates a geometry-based glue connection between the selected curve or polygon edge and the selected face.Face to Face connects the nodes on a source face to the nodes on a target face.1D Mesh to Face connects the nodes on a 1D mesh to the nodes on a target face. Use this option, for example, to connect the nodes on a 1D lattice body mesh to the nodes on the surrounding geometry.Note: To create a kinematic joint for a Simcenter Nastran SOL 402 solution, select Node to Node or Point to Point.
Method of Connection
Available only for Node to Node, Point to Point, Edge to Edge, Face to Face connections that contain multiple points.
Method of Connection	Determines how connections are created between selected groups of nodes.The following options are available for Node to Node or Point to Point connections when you select multiple nodes or points for both the Source and Target: They are also available for the Face to Face connections.Proximity — Connects a source node or point to the closest target node or point.Order of Selection — Pairs source and target locations based on the order in which you select them. For example, the software pairs the first node or point that you select on the source to the first node or point that you select on the target. The software then creates the 1D element between those locations.Mean Vector — Calculates the mean location of all source points or nodes and target points or nodes and creates a vector between those locations. The software then takes a source node or point and draws a vector that is parallel to the mean vector. The software uses the parallel vector to find the closest point on the target and then creates the 1D element between those points.X Ordered, Y Ordered, Z Ordered — Depending upon the option you select, the software first sorts all the source nodes or points based on their X, Y, or Z coordinates. The software then sorts all the target points based on their X, Y, or Z coordinates. The software then uses those sorted lists to create the 1D elements between the source and target nodes or points.Proximity Spider — Available with Node to Node connections only. Creates a spider type of connection that connects a single core node to multiple leg nodes with a rigid or constraint element based on the distance between the leg and core nodes.Spider to Element Edge on Target — Projects the nodes from the source edge onto the target edge. The software then creates a spider-type connection element between the two sets of nodes. The software also creates a connection element between each projected node (this node becomes the dependent node) and the nodes on the target edge (these nodes become the leg nodes). For example, in Nastran models, you can create an RBE2 element between the two sets of nodes and an RBE3 element between each projected node and the nodes on the target edge.Spider to Element Face on Target — Projects the nodes from the source edge onto the target element face. The software then creates a spider-type connection element between the two sets of nodes. The software also creates a connection element between each projected node (this node becomes the dependent node) and the nodes on the face of each element on the target edge (these nodes become the leg nodes). For example, in Nastran models, you can create an RBE2 element between the two sets of nodes and an RBE3 element between each projected node and the nodes on the target edge.
Connection Methods
Available only for the Proximity Spider connection method.
Select Core and Leg Nodes Select Leg Nodes Only	Select Core and Leg Nodes lets you select both the core node and the leg nodes to create the connection. The software creates connection elements between every core node and all leg nodes that lie within the search distanceSelect Leg Nodes Only lets you select the leg nodes only to create the connection. The software averages the locations of the nodes you select and uses that average to automatically define the location of the core node.
Available only for Point to Edge connections.
Point to Edges Arcs to Centers	Point to Edges creates a connection between a selected point and one or more edges.Arcs to Centers creates a connection between a circular edge or a non-circular closed loop and its center point. With this option, you select the edge of the hole, and the software automatically selects the center point of the hole. This option is useful, for example, when you want to create spider type elements, such as Nastran RBE3 elements, between the center of a hole and the edge of a hole.
Source
Group Reference	Available when Type is set to Point to Edge, Point to Face, Edge to Edge, Edge to Face, Face to Face, Node to Node, or 1D Mesh to Face.Lets you apply the 1D connection to a group. The resulting connection recipe is based on the member geometry in the referenced group. If the group is later modified, the 1D connection that references it is updated automatically.For more information, see Group Reference options.
Select source geometry or FE entities	Selects the source geometry or FE entities for the 1D connection mesh. For some connection types, you can also select a selection recipe that contains the source geometry.The type of entities you can select depends on the specified 1D connection type. For certain connection types, you can use a selection recipe to select the source geometry or FE entities.
Target
Group Reference	Available when Type is set to Point to Edge, Point to Face, Edge to Edge, Edge to Face, Face to Face, Node to Node, or 1D Mesh to Face.Lets you apply the 1D connection to a group.For more information, see Group Reference options.
Select target geometry or FE entities	Selects the target geometry or FE entities for the 1D connection mesh. For some connection types, you can also select a selection recipe that contains the target geometry.The type of entities you can select depends on the specified 1D connection type. For certain connection types, you can use a selection recipe to select the source geometry or FE entities.
Search Distance
Available when Method of Connection is set to Proximity Spider and Connection Method is set to Select Core and Leg Nodes
Distance	Lets you specify the maximum distance that the software searches for leg nodes. This value also controls the maximum length of the connection elements.
Node to Face Proximity
Available for 1D Mesh to Face connections.
Node to Face Proximity	Lets you specify a tolerance value that determines whether the software uses a projected node from the 1D mesh as one of the leg nodes in the connection element.If the projected node falls outside of the face but within this tolerance value, the software uses the node to create the specified type of connection element.If the projected node falls outside of the face and outside of this tolerance value, the software does not use the node to create the specified type of connection element.
Connection Element****Element Properties
Not available for Element Edge to Element Face connections.
Type	Specifies the type of 1D element to create. Available element types depend on the selected solver and solution type.To specify additional properties for an element, such as an alternative (hybrid) formulation of an Abaqus element, click Mesh Associated Data .
Mesh Associated Data	Appears when you select an element type that requires the definition of additional attributes.Opens the Mesh Associated Data dialog box where you can define attributes for the elements. The software applies these properties uniformly to all the elements in the mesh.
Destination Collector
Automatic Creation	When selected, creates a new destination collector for you using default physical and material properties.
Mesh Collector	Specifies an existing mesh collector from the Mesh Collector list. New Collector opens the Mesh Collector dialog box, where you create additional mesh collectors.
Mesh Density
Available for geometry-based connections when there is no existing mesh on target geometry.
Mesh Control	Defines a mesh control on the target edges or faces.For more information, see Controlling local mesh density (Mesh Controls).
Mid-Node Option
Not available for Node to Node or Point to Point connections.
Connect Mid-Nodes	When selected, generates connections to the midnodes of parabolic elements.
Label
Available only for Node to Node and Element Edge to Element Face connections.
Label	Specifies the unique numeric identifier for the next element.
Connection Element Creation Tolerance
Available only for Edge to Face and Face to Face connections in the Nastran solver environment.
Projected Point Proximity to Face	This tolerance determines whether the software uses a projected node as one of the nodes in the specified type of connection element.If the projected node falls outside of the face but within this tolerance value, the software uses the node to create the connection element.If the projected node falls outside of the face and outside of this tolerance value, the software does not use the node to create the connection element.
Preview
Show Result	Click Show Result to preview the connection elements based on your current selections. Click Undo Result if you are not satisfied with the previewed elements.

How do I

Create a node-to-node connection

Create an element edge to element face connection

Create a point-to-point connection

Create a point-to-edge connection

Create a point-to-face connection

Create an edge-to-edge connection

Create an edge-to-face connection

Learn more

1D Connection

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

1D Connection dialog box, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });