*HEADING
 - Adding/removing elements and verification for initial conditions
 - Test for CPE4 element
*IMPORT, STEP=1, UPDATE=YES, STATE=YES
 E3,
*NODE, NSET=N4
 201,0,0,0
 202,2,0,0
 203,2,2,0
 204,0,2,0
*ELEMENT, TYPE=CPE4, ELSET=E4
 201,201,202,203,204
*SOLID SECTION, ELSET=E4, MATERIAL=MAT3
*MATERIAL, NAME=MAT3
*HYPERFOAM
5.E5,2.5,0.1
*DENSITY
10., 
*BOUNDARY
 201,1,2
 111,1,2
 202,2,2
 112,2,2
 204,1,1
 114,1,1
*INITIAL CONDITIONS, TYPE=VELOCITY
 SIDE_2,1,0.1
*NSET, NSET=SIDE_3
  202, 203
*NSET, NSET=END
 SIDE_2, SIDE_3
*RESTART,WRITE
*STEP,NLGEOM
*DYNAMIC
0.01,0.1
*BOUNDARY, TYPE=VELOCITY
 SIDE_3,1,1,-2.
*NODE FILE
 U,
 COORD,
*EL FILE
 LE,S
*OUTPUT, FIELD,FREQ=1
*NODE OUTPUT
 U,
 COORD,
*ELEMENT OUTPUT
S,LE
*END STEP