*HEADING
 : Test Rigid Body Ouput Variables for spring/beam combination.
 test of one SPRING and one B31 element
 rigid rotation of 1.57080 rad (90 deg) about Z axis (for beam).
 ouput request for elset SPRINGS will trigger a warning message because
 the elset has no mass.
 second output request (no elset specified) prints output for whole model.
*RESTART, WRITE, F=999
**
*NODE, NSET=NALL
  1, 1.0, 0.0, 0.0
  2, 2.0, 0.0, 0.0
  3, 3.0, 0.0, 0.0
*ELEMENT, TYPE=SPRING1, ELSET=SPRINGS
 1,  1
*SPRING, ELSET=SPRINGS
 2, 
 10.0, 
*ELEMENT, TYPE=B31, ELSET=B31
 2,  1, 3
*BEAM SECTION, SECTION=RECT, ELSET=B31, MATERIAL=A1
 0.7, 0.7
**
*MATERIAL, NAME=A1
*ELASTIC
 30.0E6, 0.3
*DENSITY
 7.5E-4, 
*BOUNDARY
   1, 1, 5, 0.0
NALL, 3, 5, 0.0
**
*STEP, NLGEOM, AMP=RAMP, INC=100
*DYNAMIC
 0.02, 1.0
*CONTROLS, PARAMETER=FIELD
 ,,,1.0E-1
*BOUNDARY
 NALL, 6, 6, 1.57080
*NODE FILE, F=999
COORD, 
V, 
*EL FILE, F=999
 XC, 
 UC, 
 VC, 
 RI , 
 HC, 
 HO, 
 MASS, 
 VOL, 
*EL PRINT, ELSET=SPRINGS, F=999
 XC, 
 UC, 
 VC, 
 RI , 
 HC, 
 HO, 
 MASS, 
 VOL, 
*EL PRINT, F=999
 XC, 
 UC, 
 VC, 
 RI , 
 HC, 
 HO, 
 MASS, 
 VOL, 
*NODE PRINT, F=0
*END STEP