*HEADING 
EXAMPLE: Wave Propagation in an Infinite Medium - CPE4R Elements
*NODE, NSET=QA_TEST_ALLNODES
1,0.0,0.0
181,.008,0.0
*NGEN,NSET=TOP
1,181
*NODE, NSET=QA_TEST_ALLNODES
21401,.000, -4.7555555E-3
21581,.008, -4.7555556E-3
*NGEN,NSET=BOTTOM
21401,21581
*NFILL,NSET=NALL
TOP,BOTTOM,107,200
*NSET,NSET=CLINE,GENERATE
1,21401,200
*NSET,NSET=TRANS,GENERATE
1,73,1
*NSET,NSET=NOUT,GENERATE
9074,14474,1800
*ELEMENT,TYPE=CPE4R
1,201,202,2,1
*ELGEN,ELSET=EALL
1,179,1,1,106,200,200
*ELSET,ELSET=TRANS,GEN
1,73,1
*ELEMENT,TYPE=CINPE4
300001,21202,21201,21401,21402
400001,180,380,381,181
*ELGEN,ELSET=INFIN
300001,178,1,1
400001,105,200,1
*ELEMENT,TYPE=CINPE4,ELSET=INFIN
300179,21380,21379,21579,21581
**
*ELSET,ELSET=ALL
EALL,INFIN
**
*SECTION CONTROLS, NAME=HG, HOURGLASS=STIFFNESS
*SOLID SECTION,ELSET=ALL,MATERIAL=MAT1,CONTROLS=HG
*MATERIAL,NAME=MAT1
*ELASTIC
7.3E10,.33
*DENSITY
2842.0, 
**
** 10 MegaHertz Raised Cosine Function
** f(t) = (1-cos(wt/3))cos(wt) where w=2*pi MRad/s and 0<t<6*pi/w
*AMPLITUDE,NAME=GAUSS,INPUT=waveprop_ef1.inp
**
**
*NSET, NSET=QA_TEST_ALLNODES
QA_TEST_ALLNODES, TOP, BOTTOM, NALL
CLINE, TRANS, NOUT
**
*STEP,NLGEOM=NO
*DYNAMIC,EXPLICIT
,4.0E-6
**
*BOUNDARY
CLINE,1,
**
*BULK VISCOSITY
0.0,0.0
**
*DLOAD,OP=NEW,AMPLITUDE=GAUSS
TRANS,P3,1.0E9
**
*RESTART,WRITE,NUMBER=1
*FILE OUTPUT,NUMBER INTERVAL=1
*NODE FILE
U, 
*ENERGY FILE
*OUTPUT,FIELD,VARIABLE=PRESELECT,OP=ADD,NUMBER INTERVAL=4
*OUTPUT, FIELD, OP=ADD, NUMBER INTERVAL=1
*NODE OUTPUT
U, 
*ENERGY OUTPUT,VARIABLE=ALL
*OUTPUT,HISTORY,OP=ADD,TIME INTERVAL=4.0E-9
*NODE OUTPUT,NSET=NOUT
U,
***OUTPUT,HISTORY,VARIABLE=PRESELECT
*END STEP