/IMPDISP/FGEO

Block Format Keyword Describes the final position of a set of N nodes, input by coordinates.

Format

(1)	(2)	(4)	(5)	(6)	(7)
/IMPDISP/FGEO/`impdisp_ID`/`unit_ID`
`impdisp_title`
`fct_ID`	`part_ID`	`sens_ID`
`Ascale`			`T`_start		`T`_stop
`node_ID`₁	`X`₁	`Y`₁		`Z`₁
etc
`node_ID`_N	`X`_N	`Y`_N		`Z`_N

Field	Contents	SI Unit Example
`impdisp_ID`	Imposed displacement block identifier (Integer, maximum 10 digits)
`unit_ID`	Unit Identifier (Integer, maximum 10 digits)
`impdisp_title`	Final geometry block title. (Character, maximum 100 characters)
`fct_ID`	Time function identifier. (Integer)
`part_ID`	Spring part identifier. 5 (Integer)
`sens_ID`	Sensor identifier. (Integer)
`Ascale`	Abscissa scale factor for `fct_ID`. Default = 1.0 (Real)	$[s]$
`T`_start	Start time. (Real)	$[s]$
`T`_stop	Stop time. Default = 10³⁰ (Real)	$[s]$
`node_ID`_i	Node identifier. (Integer)
`X`_N	X coordinate. (Real)	$[m]$
`Y`_N	Y coordinate. (Real)	$[m]$
`Z`_N	Z coordinate. (Real)	$[m]$

A displacement is imposed to node_ID_N from its initial position provided in /NODE, to its final position (X_N, Y_N, and Z_N).
fct_ID is a scale factor on the imposed displacement, it should vary between 0 and 1.
Abscissa scale factor, Ascale is used to transform the function of time, as:(1)
$F (t^{'}) = f_{T} (\frac{t}{A s c a l e})$

Where, $f_{T}$ is the function of fct_ID_T.
After T_stop, the nodes move freely.
Initial node position N₁ and final node position N₂ can be defined as a spring N₁N₂ with zero stiffness. The spring part_ID is optional and can be used to simplify the input since a pre-processor can easily generate springs between an initial position and a final one.