Nodes are the most basic finite element entity. A node represents a physical position on the structure being modeled and is used by an element entity to define the location and shape of that element. It is also used as temporary input to create geometry entities.
A node may contain a pointer to other geometric entities and can be associated directly to them.
Nodes are considered to be used if they are referenced in the definition of an element, system, vector, group, load, equation, or are referenced by any card image on any HyperMesh entity. HyperMesh automatically deletes unused nodes and any loads that are attached to unused nodes.
Nodes can not be organized into components. Nodes can be organized into HyperMesh include files, which defines the solver include file they will be exported to. Use the Organize panel to organize nodes into include files. The Organize panel can be accessed using the Organize icon on the Collectors toolbar.
The following panels can be used to create and edit nodes:
Nodes
Node Edit
Temp Nodes
The data names associated with nodes can be found in the data names section of the HyperMesh Reference Guide.
Solver Card Support for Nodes
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
*NFILL
|
Generate nodes for a region of a mesh by filling in nodes between two bounds
|
NSET
|
These cards are resolved to individual entities on import and are written back on export the same way.
|
*NGEN
|
Generate nodes incrementally
|
NSET
|
Currently nodes can only be created incrementally between two nodes.
Nodes generated along a parabola or curve are not supported (LINE=P or C parameter is currently not supported).
SYSTEM parameter is currently unsupported.
These cards are resolved to individual entities on import and are written back on export the same way.
|
*NODE
|
Specify nodal coordinates
|
NSET and SYSTEM
|
The SYSTEM parameter is created automatically during export based upon the type of reference coordinate system that is assigned to the nodes.
The card image for a node is displayed in global Cartesian coordinates in HyperMesh.
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
NODE
|
|
|
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
N
|
Defines a node
|
NODE, X, Y, Z, THXY, THYZ, THZX
|
|
N
|
Defines a node
|
R5.1, Type, NODE, SOLID, VAL1, VAL2, VAL3
|
|
N
|
Defines a node
|
R5.3, LOC, NODE, SOLID, NODLOC, VAL1, VAL2, VAL3
|
|
NBLOCK
|
Nodal block
|
ID, SOLIDFLG, LINELOC, X, Y, Z
|
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
NODE
|
|
|
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
*NODE
|
Define a node and it's coordinates in the global coordinate system.
|
|
Card can be previewed, but not edited
|
*NODE_RIGID_SURFACE
|
Define a rigid node and it's coordinates in the global coordinate system.
|
TRSID, NSID
|
Card can be previewed, but not edited
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
COORDINATE.CARTESIAN
|
Nodal coordinate definition in a Cartesian coordinate system
|
X, Y, Z coordinates
|
If the node is created through type in, the entered values for x, y and z coincide with the X, Y, and Z coordinates of the COORDINATE.CARTESIAN, while system and as node are not used.
|
POINT_OBJECT
|
Point on a body or on the reference space, or a finite element node.
|
REF_SPACE if the POINT_OBJECT is on the reference space
RIGID_BODY if the POINT_OBJECT is on a rigid body
FLEX_BODY if the POINT_OBJECT is on a flexible body
FE_NODE if the POINT_OBJECT is a finite element node
|
NAME can be entered on the card image.
|
POINT_OBJECT_FE
|
Point on a body or on the reference space, or a finite element node.
|
|
|
POINT_OBJECT_1_FE
|
Defines a point associated with, and located relative to, a body or the reference space.
|
|
|
POINT_OBJECT_1_MB
|
Defines a point associated with, and located relative to, a body or the reference space.
|
|
Defined through the parent element.
|
POINT_OBJECT_2_FE
|
Defines a second point associated with, and located relative to, a body or the reference space.
|
|
|
POINT_OBJECT_2_MB
|
Defines a second point associated with, and located relative to, a body or the reference space.
|
|
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
GRID
|
Defines the location of a geometric grid point, the directions of its displacement, and its permanent single-point constraints.
|
PS
SPOINT
CD-1
GRID_COMMENT
|
Permanent single point constraint field supported for feinput only. On export, equivalent SPC cards are output.
|
SPOINT
|
Defines scalar points.
|
n/a
|
SPOINT is supported the same way GRID is supported. On import or export, all the nodes that are designated to be SPOINT will be converted to nodes at the origin.
|
|
HyperMesh Nodes are used to represent GRID and SPOINT OptiStruct entries.
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
GRID
|
Defines the location of a geometric grid point of the structural model, the directions of its displacement, and its permanent single-point constraints.
|
|
Exported in large field format by optistructlf template.
|
SPOINT
|
Defines a scalar point.
|
|
Ideally a scalar point has no location, but in HyperMesh it is represented as a node.
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
CNODE /
|
Common node definition
|
|
In the card previewer, use the Common_Node toggle to select NODE or CNODE.
|
NODE /
|
Node definition
|
|
|
| Note: | Use the find_cnodes summary template to highlight all CNODE nodes as temporary nodes. |
|
|
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
$COOR
|
Definition of nodal points and their coordinates
|
|
|
|
The supported RADIOSS starter cards in RADIOSS (Block Format) 5.1, 9.0, 10.0 and 11.0 are listed below. To create these cards, right-click in the Solver browser and select Create Cards from the context menu.
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
/CNODE
|
|
|
|
/NODE
|
|
|
|
|
Node cards are fully input into HyperMesh.
Nodal coordinates are defined with X, Y, and Z coordinates. Skew frames for nodal time history is supported for RADIOSS (Fixed Format) version 4.1.
|
The following cards are supported in the HyperMesh Samcef interface:
Supported Cards
|
Solver Description
|
Supported Parameters
|
Notes
|
.NOE
|
Allows the entry of the coordinates of the nodes of the structure.
|
NODEID, X, Y, Z
|
|
|
See Also:
Browsers
HyperMesh Entities & Solver Interfaces
Geometry
Meshing
Model Setup
