Block Format Keyword Defines a concentrated force or moment applied to each node of a prescribed nodal group.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
fct_IDT Dir skew_ID sens_ID grnd_ID Ascalex Fscaley

## Definition

Field Contents SI Unit Example

(Integer, maximum 10 digits)

unit_ID Unit Identifier.

(Integer, maximum 10 digits)

(Character, maximum 100 characters)

fct_IDT Time function identifier.

(Integer)

Dir Direction of load: X, Y, and Z for forces; XX, YY, and ZZ for moments.

(Text)

skew_ID Skew identifier.

(Integer)

sens_ID Sensor identifier.
0
The concentrated load is applied after sensor activation (the time function is shifted in time).

(Integer)

grnd_ID Node group to which the concentrated loads are applied.

(Integer)

Ascalex Abscissa scale factor.

Default = 1.0 (Real)

$\left[\text{s}\right]$
Fscaley Ordinate scale factor.

Default = 1.0 (Real)

$\left[\text{N}\right]$

1. The direction of load must be right justified in the ten characters of field number 2.
2. The grnd_ID input is obligatory. The concentrated loads will only be applied to the nodal group. The force is applied to each node individually, so:
$total_force=\mathrm{F}\left(t\right)\cdot {N}_{node}$

with ${N}_{node}$ being the number of nodes in the node group.

3. The Ascalex and Fscaley are used to scale the abscissa and ordinate.

The actual load function value is calculated as:

$\mathrm{F}\left(t\right)=Fscal{e}_{y}\cdot {\mathrm{f}}_{T}\cdot \left(\frac{t}{Ascal{e}_{x}}\right)$

Where, ${\mathrm{f}}_{T}$ is the function of fct_IDT.

The force is applied individually to each node of the nodal group. The total force is equivalent to the force value multiplied by the number of nodes.