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/GRNOD

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/GRNOD
/GRNOD

Input Type Keywords: Node Group

Keyword	Type of input
NODE	list of nodes
GENE	list of nodes with generation
SUBMODEL	submodel
SUBSET	subset
PART	part
MAT	material
PROP	property
BOX	box
GRNOD	node groups
SURF	surface
GRSHEL	4 node shell group
GRBRIC	brick group
GRQUAD	quad group
GRSPRI	spring group
GRSH3N	3 node shell group
GRTRUS	truss group
GRBEAM	beam group
NODENS	unsorted node numbers

Comments

1.	A node group is a set of nodes. It can be defined explicitly by a list of:

•

nodes

•	nodes with generation

•	submodels (all nodes belonging to the listed submodel are included)

•	submodels (all nodes defined by /NODE or /CNODE in the listed submodel are included)

•	subsets or parts (all nodes belonging to the listed subset/part are included)

•	property sets or materials (all nodes belonging to an element having those Property Type's/MID's are included)

•	groups of nodes

•	element groups (all nodes connected to those elements are included)

•	a box (all nodes within a defined box are included)

•	an unsorted node list: same as list of nodes, but the nodes are not sorted (only needed in interface type 8 and /XELEM option).

2.	Node groups are used to define slave nodes of rigid walls, interfaces, rigid bodies or nodes to which a load is applied, like a concentrated load or a fixed velocity.

3.	Nodes are stored in this order. For all other input types, nodes are sorted.