*HEADING
 : F2D2 FLUID ELEMENT TEST 
 (1x1x1 BLOCK, HYDRAULIC, NO BULK MODULUS, NO THERMAL EXPANSION)
 KEYWORD-PARAMETER COMBINATION TESTED: CONTROLS, FIELD=HYDROSTATIC FLUID 
 PRESSURE
*RESTART, WRITE, FREQ=1
*NODE, NSET=CAV1NOD
  1, 1., 1.
  2, 2., 1.
  3, 2., 2.
  4, 1., 2.
  5, 3., 1.
  6, 3., 3.
  7, 1., 3.
*NODE, NSET=CAV2NOD
  10, 3., 1.
  20, 4., 1.
  30, 4., 2.
  40, 3., 2.
  50, 6., 1.
  60, 6., 3.
  70, 4., 3.
*ELEMENT, TYPE=CPE4, ELSET=STRUCTURE
  1,  2,  5,  6,  3
  2,  3,  6,  7,  4 
 11, 20, 50, 60, 30
 12, 30, 60, 70, 40 
*SOLID SECTION, ELSET=STRUCTURE, MATERIAL=ELAS
*MATERIAL, NAME=ELAS
*ELASTIC
 1.0E-3
*SURFACE,TYPE=ELEMENT,NAME=CAV1
 1, S4
 2, S4
*SURFACE,TYPE=ELEMENT,NAME=CAV2
 11, S4
 12, S4
*PHYSICAL CONSTANTS, ABSOLUTE ZERO = 0
*FLUID CAVITY, NAME=CAVITY1, BEHAVIOR=FLUID, SURFACE=CAV1, REFNODE=1
 1.0
*FLUID CAVITY, NAME=CAVITY2, BEHAVIOR=FLUID, SURFACE=CAV2, REFNODE=10
 1.0
*FLUID BEHAVIOR, NAME=FLUID
*FLUID DENSITY
10., 
*ELEMENT, TYPE=SPRING1, ELSET=SPRINGX1
21, 2
210, 20
*SPRING, ELSET=SPRINGX1
1, 
400., 
*ELEMENT, TYPE=SPRING1, ELSET=SPRINGY1
42, 4
420, 40
*SPRING, ELSET=SPRINGY1
2, 
1.E-6,
*BOUNDARY
2, 2, 2, 0.0
4, 1, 1, 0.0
20, 2, 2, 0.0
40, 1, 1, 0.0
*EQUATION
2, 
3, 1, 1.0, 2, 1, -1.0
2, 
3, 2, 1.0, 4, 2, -1.0
2, 
30, 1, 1.0, 20, 1, -1.0
2, 
30, 2, 1.0, 40, 2, -1.0
**
** Sets added by addodb
**
*Elset,Elset=ODB_ESET
SPRINGX1, SPRINGY1
**
**
*Nset, Nset=ODB_NSET
CAV1NOD,CAV2NOD
**
**  STEP #1: F2D2 FLUID ELEMENT TEST 
**
*STEP, NLGEOM
*STATIC
.2, 1.
*MODEL CHANGE, REMOVE
 STRUCTURE
*CLOAD
4, 2, -600.
*NODE PRINT,FREQ=100,NSET=CAV1NOD
U,PCAV,CVOL
*ENERGY PRINT
*OUTPUT,FIELD,VARIABLE=PRESELECT,OP=ADD,FREQUENCY=1
*OUTPUT,FIELD, OP=ADD,Frequency=100
*NODE OUTPUT
U,
*OUTPUT,HISTORY,OP=ADD,Frequency=100
*NODE OUTPUT, Nset=ODB_NSET
U,PCAV,CVOL
*OUTPUT,FIELD, OP=ADD
*ENERGY OUTPUT,VARIABLE=ALL
*OUTPUT,HISTORY,OP=ADD
*ENERGY OUTPUT,VARIABLE=ALL
*END STEP
**
** STEP #2, TEST: OPTION *CONTROLS, FIELD=HYDROSTATIC FLUID PRESSURE 
**
*STEP, NLGEOM
*STATIC
.2, 1.
*CONTROLS, FIELD=HYDROSTATIC FLUID PRESSURE, PARAMETERS=FIELD
2.5E-3,5.0E-5,3.0E-3,1.0E-2
*CLOAD
40, 2, -600.
*NODE PRINT,FREQ=100,NSET=CAV2NOD
U,PCAV,CVOL
*ENERGY PRINT
*END STEP