!EQUATION

Definition of restricted node group

1st Line

!EQUATION [, optional parameter]

Parameter
INPUT	External file name (omissible)

Parameter Name	Parameter Value	Contents
INPUT	<filename>	External file name (omissible), can also be used together with the 2nd line or later

2nd Line or later

(2nd Line) NEQ, CONST

(3rd Line or later) nod1, DOF1, A1, nod2, DOF2, A2 ... (up to seven terms for one line)
(Hereinafter repeated)

Parameter Name	Attributions	Contents
NEQ	I	Number of equation terms
CONST	R	Constant term of equation (right value)
nod1	I/C	1st node or node group
DOF1	I	Restricted degree of freedom of 1st node or node group
A1	R	Factor of 1st node or node group
nod2	I/C	2nd node or node group
DOF2	I	Restricted degree of freedom of 2nd node or node group
A2	R	Factor of 2nd node or node group

Note:

• When a node or a node group not defined by "!NODE" is specified, it will be ignored and a warning message will be displayed.
• In the case of "nod1=nod2", it will be ignored and a warning message will be displayed.
• When a node group is specified, if the number of nodes is not consistent an error will occur.
• The degree of freedom number differs by the type of analysis and elements. An inconsistent degree of freedom will be ignored, and a warning message will be displayed.

Example of Use

!EQUATION
3
101, 1, 1.0, 102, 1, -1.0, 103, 1, -1.0
2
NG1, 2, 1.0, NG5, 2, -1.0