# /IMPVEL/FGEO

Block Format Keyword Describes the final position of a set of N nodes. The final position is provided by a node number. The node may eventually move.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/IMPVEL/FGEO/impvel_ID/unit_ID
impvel_title
fct_ID part_ID fct_IDL sens_ID
Ascale T0 Tstart FscaleL Dmin
node_ID1 node_ID'1
etc etc
node_IDN node_ID'N

## Definitions

Field Contents SI Unit Example
impvel_ID Imposed velocity block identifier

(Integer, maximum 10 digits)

unit_ID Unit Identifier

(Integer, maximum 10 digits)

impvel_title Final geometry block title.

(Character, maximum 100 characters)

fct_ID Time function identifier.

(Integer)

part_ID Spring part identifier. 5

(Integer)

(integer)

sens_ID Sensor identifier.

(Integer)

Ascale Abscissa scale factor for fct_ID.

Default = 1.0 (Real)

$\left[\text{s}\right]$
T0 Time duration. 3

(Real)

$\left[\text{s}\right]$
Tstart Start time.

(Real)

$\left[\text{s}\right]$
FscaleL Ordinate scale factor for fct_IDL.

Default = 1.0 (Real)

$\left[\text{N}\right]$
Dmin Distance between node_IDN and node_ID'N, which will be rigidly connected.

(Real)

$\left[\text{m}\right]$
node_ID1 Node identifier

(Integer)

node_ID'N Node identifier giving the final position of node_IDN.

(Integer)

3. T0 is the duration used to compute a scale factor on the velocity of node_IDN. With ${d}_{0}$ being the initial distance between node_IDN and node_ID'N:(1)
$\mathrm{V}\left(t\right)={\mathrm{f}}_{T}\left(t\right)\cdot \frac{{d}_{0}}{{T}_{0}}$
Where ${\mathrm{f}}_{T}$ is the function of fct_IDT.
$F\left({t}^{\text{'}}\right)={\mathrm{f}}_{T}\left(\frac{t}{Ascale}\right)$