** Mass scaling verification: *FIXED MASS SCALING, TYPE=UNIFORM to scale deformable 
**    elements and a 2-d rigid body constructed of rigid 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=R3D4,ELSET=RREFER
3,   5,6,8,7
13,  15,16,18,17
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, 
*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, 
*BOUNDARY
FIXED, 1,6
*INITIAL CONDITIONS,TYPE=VELOCITY
BODY,2,-1000.0
*SURFACE,TYPE=ELEMENT,NAME=SECONDARY1
1, S1
*SURFACE,TYPE=ELEMENT,NAME=MAIN1
101, SPOS
*SURFACE,TYPE=ELEMENT,NAME=SECONDARY2
11, S1
*SURFACE,TYPE=ELEMENT,NAME=MAIN2
111, SPOS
*SURFACE,TYPE=ELEMENT,NAME=SECONDARY3
21, S1
*SURFACE,TYPE=ELEMENT,NAME=MAIN3
121, SPOS
*RIGID BODY,ELSET=RIGID2,REFNODE=8000,DENSITY=1.E-2
.5, 
*RIGID BODY,ELSET=RIGID3,REFNODE=9000,DENSITY=1.E-2
.5, 
*RIGID BODY,ELSET=FIXED1,REFNODE=1000
*RIGID BODY,ELSET=FIXED2,REFNODE=2000
*RIGID BODY,ELSET=FIXED3,REFNODE=3000
*RIGID BODY,ELSET=RIGID1,REFNODE=7000,DENSITY=5.E-2
.5, 
*STEP
*DYNAMIC,EXPLICIT
,.03E-3
*ELSET,ELSET=FIXSCALE
RIGID2,SCALE
*FIXED MASS SCALING, ELSET=FIXSCALE, TYPE=UNIFORM, DT=5.773502E-07 
*CONTACT PAIR
SECONDARY1, MAIN1
SECONDARY2, MAIN2
SECONDARY3, MAIN3
**
*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
***ELEMENT OUTPUT,ELSET=SCALE
**EDT,EMSF
***ENERGY OUTPUT
**DMASS,
*BULK VISCOSITY
0.,0.
*END STEP