/PLOAD
Block Format Keyword Defines pressure load on a surface.
Format
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

/PLOAD/pload_ID/unit_ID  
pload_title  
surf_ID  fct_ID_{T}  sens_ID  I_{pinch}  I_{del}  Ascale_{x}  Fscale_{y} 
Definitions
Field  Contents  SI Unit Example 

pload_ID  Pressure load block
identifier. (Integer, maximum 10 digits) 

unit_ID  Unit Identifier. (Integer, maximum 10 digits) 

pload_title  Pressure load block
title. (Character, maximum 100 characters) 

surf_ID  Surface
identifier. (Integer) 

fct_ID_{T}  Time function
identifier. (Integer) 

sens_ID  Sensor identifier.
(Integer) 

I_{pinch}  Pinching flag. 4


I_{del}  Pressure canceling flag.
4
(Integer) 

Ascale_{x}  Abscissa (time) scale
factor. Default = 1.0 (Real) 
$\left[\text{s}\right]$ 
Fscale_{y}  Ordinate (pressure) scale
factor. Default = 1.0 (Real) 
$\left[\text{Pa}\right]$ 
Comments
 In 3D analysis, positive pressure acts in direction $n={\text{N}}_{1}{\text{N}}_{3}\times {\text{N}}_{2}{\text{N}}_{4}$ with N_{1}, N_{2}, N_{3}, and N_{4} being the nodes of the segment in the surface definition.
 In 2D analysis, positive pressure acts in direction $n$ normal to N_{1} and N_{2}, obtained by a rotation in the counterclockwise direction.
 The
Ascale_{x} and
Fscale_{y} are used to scale
the abscissa (time) and ordinate (pressure).The actual pressure function value is calculated as:
(1) $$\mathrm{F}\left(t\right)=Fscal{e}_{y}\cdot {\mathrm{f}}_{T}\cdot \left(\frac{t}{Ascal{e}_{x}}\right)$$Where, ${\mathrm{f}}_{T}$ is the function of fct_ID_{T}.
 I_{pinch} set to 1 will apply pinching type of pressure (acts normal to the surface of the shell element). Currently only supported for QBAT (I_{shell}=12) type of shells.