*INCDX

Data format:

An arbitrary number of lines with 4 values each:

INOD IDIR XMOD ITAB

Status :

Optional

Purpose :

To define incremental displacements of some nodes (for quasi-static analysis)

Restriction :

The number of dofs with incremental displacements is limited to MAXLIE (version dependent)

Details :

Parameter	Description
INOD	Identification number of the node concerned
IDIR	Index for the direction of the applied motion : 1. X translation, 4 - X rotation 2. Y translation, 5 - Y rotation 3. Z translation, 6 - Z rotation
XMOD	Amplitude of the displacement
ITABLE	Reference table for the displacement increments. At load step I , the position of dof number IDIR of node INOD will be defined by its initial value + XMOD*TABLE(I,ITABLE)

Note

The couple INOD,IDIR must refer to a previously defined dof with code 1 (see keyword *NODES , value of IDOF).
The table ITABLE must have been previously defined with keyword *TABLE .
Rotations in degrees.

Example :

*INCDX
1 2 10 1

Node 1 will move 10 m along the Y-axis according to table 1. The node must be defined in *NODES by 1x1xxxx....

This keyword is very useful to bring something to a given position when this one cannot be obtained directly. For example

*INCDX
1 5 45 2

will force tnode 1 to rotate around the Y-axis with an angle of 45 degrees, according to table 2.