*HEADING
 FREE RIGID BODY MOTION             
*RESTART,WRITE,FREQUENCY=200
*NODE,NSET=RBODYCM
1, 
*NODE,NSET=RBODYPT
2,1.
3,0.,.9992085,-.03977824
4,0.,.03977824,.9992085
*MPC
BEAM,2,1
BEAM,3,1
BEAM,4,1
*ELEMENT,TYPE=ROTARYI,ELSET=BODYCMR
1,1
*ROTARY INERTIA,ELSET=BODYCMR,ORIENTATION=BDYAXES
1.,1.,2.
*ORIENTATION,NAME=BDYAXES
1.,0.,0.,0.,.9992085,-.03977824
1,0.
*ELEMENT,TYPE=MASS,ELSET=BODYCMM
5,1
*MASS,ELSET=BODYCMM
1.0, 
*ELEMENT, TYPE=MASS, ELSET=RE
6,2
7,3
8,4
*MASS, ELSET=RE
1.0e-6
*INITIAL CONDITIONS,TYPE=VELOCITY
RBODYCM,5,0.4997362
RBODYCM,6,6.268268
*STEP,INC=200,NLGEOM, UNSYMM=YES
*DYNAMIC,ALPHA=0.,INITIAL=NO
0.01,2.,1.E-8,0.01
*EL PRINT,FREQUENCY=0
*ENERGY PRINT,FREQUENCY=20
*NODE PRINT,FREQUENCY=20
U, 
V   , 
A, 
***NODE FILE,FREQUENCY=1
*NODE FILE,FREQUENCY=20
U,V,A
*OUTPUT,FIELD,FREQUENCY=100
*NODE OUTPUT
U,V,A
*OUTPUT,HISTORY,FREQUENCY=1
*NODE OUTPUT, NSET=RBODYCM
U,V,A
*NODE OUTPUT, NSET=RBODYPT
U,V,A
*END STEP