** Mass scaling verification: *FIXED MASS SCALING, TYPE=UNIFORM to scale 
**     deformable elements and a 2-d rigid body constructed of continuum elements
*HEADING
*RESTART,WRITE	
*NODE,NSET=BODY
1,   1.0, 1.0
2,   3.0, 1.0
3,   1.0, 2.0
4,   3.0, 2.0
5,   1.0, 3.0
6,   3.0, 3.0
7,   1.0, 5.0
8,   3.0, 5.0
11,  6.0, 1.0
12,  8.0, 1.0
13,  6.0, 2.0
14,  8.0, 2.0
15,  6.0, 3.0
16,  8.0, 3.0
17,  6.0, 5.0
18,  8.0, 5.0
21, 11.0, 1.0
22, 13.0, 1.0
23, 11.0, 2.0
24, 13.0, 2.0
25, 11.0, 3.0
26, 13.0, 3.0
27, 11.0, 5.0
28, 13.0, 5.0
7000,  2.0, 10.
8000,  7.0, 10.
9000, 12.0, 10.
*NODE,NSET=RIGID
101, 0.5, 0.995
102, 3.5, 0.995
111, 5.5, 0.995
112, 8.5, 0.995
121,10.5, 0.995
122,13.5, 0.995
1000,2.0, 0.0
2000,7.0, 0.0
3000,12.0, 0.0
*NSET,NSET=FIXED
1000,2000,3000
*NSET,NSET=QA_TEST
FIXED,
*ELEMENT,TYPE=R2D2,ELSET=FIXED1
101, 101,102
*ELEMENT,TYPE=R2D2,ELSET=FIXED2
111, 111,112
*ELEMENT,TYPE=R2D2,ELSET=FIXED3
121, 121,122
*ELEMENT,TYPE=CPE4R,ELSET=REFER
1, 1,2,4,3
2, 3,4,6,5
*ELEMENT,TYPE=CPE4R,ELSET=SCALE
11, 11,12,14,13
12, 13,14,16,15
*ELEMENT,TYPE=CPE4R,ELSET=NOSCALE
21, 21,22,24,23
22, 23,24,26,25
*ELEMENT,TYPE=CPE4R,ELSET=RREFER
3,   5,6,8,7
*ELEMENT,TYPE=CPE4R,ELSET=RSCALE
13,  15,16,18,17
*ELEMENT,TYPE=CPE4R,ELSET=RNOSCALE
23,  25,26,28,27
*ELSET,ELSET=RIGID1
3, 
*ELSET,ELSET=RIGID2
13, 
*ELSET,ELSET=RIGID3
23, 
*SOLID SECTION,ELSET=REFER,MATERIAL=REFER
.5, 
*SOLID SECTION,ELSET=SCALE,MATERIAL=SCALE
.5, 
*SOLID SECTION,ELSET=NOSCALE,MATERIAL=SCALE
.5, 
*SOLID SECTION,ELSET=RNOSCALE,MATERIAL=RSCALE
.5, 
*SOLID SECTION,ELSET=RSCALE,MATERIAL=RSCALE
.5, 
*SOLID SECTION,ELSET=RREFER,MATERIAL=RREFER
.5, 
*MATERIAL,NAME=REFER
*ELASTIC
1.E10, .25
*DENSITY
5.E-3, 
*MATERIAL,NAME=SCALE
*ELASTIC
1.E10, .25
*DENSITY
1.E-3, 
*MATERIAL,NAME=RSCALE
*ELASTIC
1.E10, .25
*DENSITY
1.E-2, 
*MATERIAL,NAME=RREFER
*ELASTIC
1.E10, .25
*DENSITY
5.E-2, 
*BOUNDARY
FIXED, 1,6
*INITIAL CONDITIONS,TYPE=VELOCITY
BODY,2,-1000.0
*SURFACE,TYPE=ELEMENT,NAME=TOPS1
1, S1
*SURFACE,TYPE=ELEMENT,NAME=TOPS2
11, S1
*SURFACE,TYPE=ELEMENT,NAME=BOTS1
101, SPOS
*SURFACE,TYPE=ELEMENT,NAME=TOPS3
21, S1
*SURFACE,TYPE=ELEMENT,NAME=BOTS2
111, SPOS
*SURFACE,TYPE=ELEMENT,NAME=BOTS3
121, SPOS
*RIGID BODY,ELSET=RIGID2,REFNODE=8000
*RIGID BODY,ELSET=RIGID3,REFNODE=9000
*RIGID BODY,ELSET=FIXED1,REFNODE=1000
*RIGID BODY,ELSET=FIXED2,REFNODE=2000
*RIGID BODY,ELSET=FIXED3,REFNODE=3000
*RIGID BODY,ELSET=RIGID1,REFNODE=7000
*STEP
*DYNAMIC,EXPLICIT
,.03E-3
*ELSET,ELSET=FIXSCALE
SCALE,RSCALE
*FIXED MASS SCALING, ELSET=FIXSCALE, TYPE=UNIFORM, DT=5.773502E-07 
*CONTACT PAIR
TOPS1, BOTS1
TOPS2, BOTS2
TOPS3, BOTS3
**
*RESTART,WRITE,NUMBER INTERVAL= 20
****************************
*FILE OUTPUT,NUMBER INTERVAL=1,TIMEMARKS=YES
*NODE FILE, NSET=FIXED
RF,
********************************
*OUTPUT,FIELD, NUMBER INTERVAL=1,TIMEMARKS=YES
*NODE OUTPUT, NSET=QA_TEST
RF,
*OUTPUT,HISTORY,TIME INTERVAL=0.03e-3
*ENERGY OUTPUT, VAR=ALL
*****************************
***OUTPUT,HISTORY,TIME INTERVAL=0.
***NSET, NSET=NOUT
**1000,2000,3000
***NODE OUTPUT,NSET=NOUT
**U,V,RF
*BULK VISCOSITY
0.,0.
*END STEP